| Abiskomyia sp | Diptera | Chironomidae |
| Ablabesmyia sp | Diptera | Chironomidae |
| Acamptocladius sp | Diptera | Chironomidae |
| Acarina | Acarina | --- |
| Acentrella insignificans | Ephemeroptera | Baetidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Acentrella lapponica | Ephemeroptera | Baetidae |
| Acentropus sp | Lepidoptera | Pyralidae |
| Acricotopus sp | Diptera | Chironomidae |
| Acroneuria pacifica | Plecoptera | Perlidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Acroneuria sp | Plecoptera | Perlidae |
| Acroperus harpae | Cladocera | Chydoridae |
| Aeschna eremita | Odonata | Aeshnidae |
| Aeschna septentrionalis | Odonata | Aeshnidae |
| Aeschna sitchensis | Odonata | Aeshnidae |
| Aeschna sp | Odonata | Aeshnidae |
| Agabus sp | Coleoptera | Dytiscidae |
| Agapetus sp | Trichoptera | Glossosomatidae |
| Agathon sp | Diptera | Blephariceridae |
| Agraylea sp | Trichoptera | Hydroptilidae |
| Agrypnia sp | Trichoptera | Phryganeidae |
| Allocapnia sp | Plecoptera | Capniidae |
| Alloperla sp | Plecoptera | Chloroperlidae |
| Alona sp | Cladocera | Chydoridae |
| Alonella nana | Cladocera | Chydoridae |
| Alonella sp | Cladocera | Chydoridae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Ameletus sp | Ephemeroptera | Siphlonuridae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Amiocentrus sp | Trichoptera | Brachycentridae |
| Amnicola sp | Neotaenioglossa | Hydrobiidae |
| Amphinemura sp | Plecoptera | Nemouridae |
| Amphizoidae | Coleoptera | Amphizoidae |
| Anagapetus sp | Trichoptera | Glossosomatidae |
| Anisoptera | Odonata | --- |
| Annelida | --- | --- |
| Antichaeta sp | Diptera | Sciomyzidae |
| Antocha sp | Diptera | Tipulidae |
| Apatania sp | Trichoptera | Apataniidae |
| Apataniidae | Trichoptera | Apataniidae |
| Aphididae | Homoptera | Aphididae |
| Arachnida | --- | --- |
| Arachnoidea | Ctenostomata | Arachnidiidae |
| Araneae | Araneae | --- |
| Arctoconopa sp | Diptera | Tipulidae |
| Arctopsyche sp | Trichoptera | Hydropsychidae |
| Arcynopteryx compacta | Plecoptera | Perlodidae |
| Arcynopteryx sp | Plecoptera | Perlodidae |
| Argulus sp | Arguloidea | Argulidae |
| Arrenurus sp | Hydrachnidia | Arrenuridae |
| Arthroplea sp | Ephemeroptera | Heptageniidae |
| Asynarchus sp | Trichoptera | Limnephilidae |
| Athericidae | Diptera | Athericidae |
| Atherix sp | Diptera | Athericidae |
| Atherix variegata | Diptera | Athericidae |
| Atopsyche sp | Trichoptera | Hydrobiosidae |
| Atractides sp | Trombidiformes | Hygrobatidae |
| Atrichopogon sp | Diptera | Ceratopogonidae |
| Attenella attenuata | Ephemeroptera | Ephemerellidae |
| Aturus sp | Trombidiformes | Aturidae |
| Baetidae | Ephemeroptera | Baetidae |
| Baetis bicaudatus | Ephemeroptera | Baetidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Baetis hudsonicus | Ephemeroptera | Baetidae |
| Baetis intercalaris | Ephemeroptera | Baetidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Baetis macani | Ephemeroptera | Baetidae |
| Baetis sp | Ephemeroptera | Baetidae |
| Baetis tricaudatus | Ephemeroptera | Baetidae |
| Banksiola sp | Trichoptera | Phryganeidae |
| Bellura sp | Lepidoptera | Noctuidae |
| Bethyloidea | Hymenoptera | Bethyloidea |
| Bezzia sp | Diptera | Ceratopogonidae |
| Bibiocephala sp | Diptera | Blephariceridae |
| Bivalvia | --- | --- |
| Blepharicera sp | Diptera | Blephariceridae |
| Borechlus sp | Diptera | Chironomidae |
| Boreoheptagyia sp | Diptera | Chironomidae |
| Bosmina coregoni | Cladocera | Bosminidae |
| Bosmina longirostris | Cladocera | Bosminidae |
| Bosmina sp | Cladocera | Bosminidae |
| Bostrichidae | Coleoptera | Bostrichidae |
| Bourletiella sp | Symphypleona | Sminthuridae |
| Bourletiella spinata | Symphypleona | Sminthuridae |
| Brachycentridae | Trichoptera | Brachycentridae |
| Brachycentrus sp | Trichoptera | Brachycentridae |
| Brachycera | Diptera | --- |
| Brachydeutera sp | Trichoptera | Brachycentridae |
| Brachyptera sp | Plecoptera | Nemouridae |
| Brachyvatus sp | Coleoptera | Dytiscidae |
| Braconidae | Hymenoptera | Braconidae |
| Brillia sp | Diptera | Chironomidae |
| Brychius sp | Coleoptera | Haliplidae |
| Bryophaenocladius sp | Diptera | Chironomidae |
| Bryozoa | --- | --- |
| Caborius sp | Trichoptera | Limnephilidae |
| Caenis sp | Ephemeroptera | Caenidae |
| Calanoida | Calanoida | --- |
| Calineuria sp | Plecoptera | Perlidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Callicorixa sp | Heteroptera | Corixidae |
| Candona sp | Cladocopina | Candoniidae |
| Capnia nearctica | Plecoptera | Capniidae |
| Capnia sp | Plecoptera | Capniidae |
| Capniidae | Plecoptera | Capniidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Cardiocladius sp | Diptera | Chironomidae |
| Caudatella sp | Ephemeroptera | Ephemerellidae |
| Celina sp | Coleoptera | Dytiscidae |
| Centroptilum sp | Ephemeroptera | Baetidae |
| Ceraclea sp | Trichoptera | Leptoceridae |
| Ceratopogon sp | Diptera | Ceratopogonidae |
| Ceratopogonidae | Diptera | Ceratopogonidae |
| Ceriodaphnia reticulata | Cladocera | Daphnidae |
| Ceriodaphnia sp | Cladocera | Daphnidae |
| Chaetocladius sp | Diptera | Chironomidae |
| Chaetogaster crystallinus | Haplotaxida | Naididae |
| Chaetogaster diastrophus | Haplotaxida | Naididae |
| Chaetogaster sp | Haplotaxida | Naididae |
| Chalcidoidea | Hymenoptera | --- |
| Chaoborus americanus | Diptera | Chaoboridae |
| Chaoborus sp | Diptera | Chaoboridae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Chelifera sp | Diptera | Empididae |
| Chernovskiia sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Cheumatopsyche sp | Trichoptera | Hydropsychidae |
| Chironomidae | Diptera | Chironomidae |
| Chironominae | Diptera | Chironomidae |
| Chironomus sp | Diptera | Chironomidae |
| Chloroperlidae | Plecoptera | Chloroperlidae |
| Choroterpes sp | Ephemeroptera | Leptophlebiidae |
| Chrysops sp | Diptera | Tabanidae |
| Chydorus gibbus | Cladocera | Chydoridae |
| Chydorus sp | Cladocera | Chydoridae |
| Chydorus sphaericus | Cladocera | Chydoridae |
| Chyranda sp | Trichoptera | Limnephilidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Cicadellidae | Homoptera | Cicadellidae |
| Cinygma sp | Ephemeroptera | Heptageniidae |
| Cinygmula sp | Ephemeroptera | Heptageniidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Claassenia sabulosa | Plecoptera | Acroneurinae |
| Claassenia sp | Plecoptera | Perlidae |
| Cladocera | Cladocera | --- |
| Cladopelma sp | Diptera | Chironomidae |
| Cladotanytarsus sp | Diptera | Chironomidae |
| Clinocera sp | Diptera | Empididae |
| Clinotanypus sp | Diptera | Chironomidae |
| Cloeon sp | Ephemeroptera | Baetidae |
| Clostoeca sp | Trichoptera | Limnephilidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Cnephia sp | Diptera | Simuliidae |
| Coleoptera | Coleoptera | --- |
| Collembola | Collembola | --- |
| Constempellina sp | Diptera | Chironomidae |
| Corisella sp | Heteroptera | Corixidae |
| Corixidae | Heteroptera | Corixidae |
| Corydalidae | Megaloptera | Corydalidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Corynoneura sp | Diptera | Chironomidae |
| Corynoptera sp | Diptera | Sciaridae |
| Cricotopus (Isocladius) | Diptera | Chironomidae |
| Cricotopus (Nostocladius) | Diptera | Chironomidae |
| Cricotopus bicinctus | Diptera | Chironomidae |
| Cricotopus festivellus | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Cricotopus sp | Diptera | Chironomidae |
| Cricotopus tremulus | Diptera | Chironomidae |
| Crustacea | --- | --- |
| Cryptochironomus sp | Diptera | Chironomidae |
| Cryptolabis sp | Diptera | Tipulidae |
| Culex sp | Diptera | Culicidae |
| Culicidae | Diptera | Culicidae |
| Culicoides sp | Diptera | Ceratopogonidae |
| Cultus sp | Plecoptera | Perlodidae |
| Curculionidae | Coleoptera | Curculionidae |
| Cybister sp | Coleoptera | Dytiscidae |
| Cyclocypris sp | Podocopa | Cyprididae |
| Cyclopoida | Cyclopoida | --- |
| Cyclops sp | Cyclopoida | Cyclopidae |
| Cyclops vernalis | Cyclopoida | Cyclopidae |
| Cyphomella sp | Diptera | Chironomidae |
| Cypria sp | Podocopa | Cyprididae |
| Cypriconcha sp | Podocopa | Cyprididae
Cyprididae |
| Cypris sp | Ostracoda | Cyprididae |
| Daphnia galeata | Cladocera | Daphnidae |
| Daphnia pulex | Cladocera | Daphnidae |
| Daphnia rosea | Cladocera | Daphnidae |
| Daphnia schoedleri | Cladocera | Daphnidae |
| Daphnia sp | Cladocera | Daphnidae |
| Dasycorixa sp | Heteroptera | Corixidae |
| Dasyhelea sp | Diptera | Ceratopogonidae |
| Demicryptochironomus sp | Diptera | Chironomidae |
| Derytanypus sp | Diptera | Chironomidae |
| Desmona sp | Trichoptera | Limnephilidae |
| Despaxia sp | Plecoptera | Leuctridae |
| Desserobdella picta | Rhynchobdellida | Glossiphoniidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Desserobdella sp | Rhynchobdellida | Glossiphoniidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Deuterophlebia sp | Diptera | Deuterophelbiidae |
| Diamesa sp | Diptera | Chironomidae |
| Diamesinae | Diptera | Diamesinae |
| Diaptomus franciscanus | Calanoida | Diaptomidae |
| Diaptomus sp | Calanoida | Diaptomidae |
| Dicosmoecus sp | Trichoptera | Limnephilidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Dicranota sp | Diptera | Tipulidae |
| Dicrotendipes sp | Diptera | Chironomidae |
| Dina parva | Pharyngobdellida | Erpobdellidae |
| Diplectrona sp | Trichoptera | Hydropsychidae |
| Diplocladius cultriger | Diptera | Chironomidae |
| Diplocladius sp | Diptera | Chironomidae |
| Diptera | Diptera | --- |
| Disparalona rostrata | Cladocera | Chydoridae |
| Diura sp | Plecoptera | Perlodidae |
| Dixa sp | Diptera | Dixidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Dixella sp | Diptera | Dixidae |
| Doddsia sp | Plecoptera | Taeniopterygidae |
| Dolichopodidae | Diptera | Dolichopodidae |
| Dolichopus sp | Diptera | Dolichopodidae |
| Drunella coloradensis | Ephemeroptera | Ephemerellidae |
| Drunella doddsi | Ephemeroptera | Ephemerellidae |
| Drunella flavilinea | Ephemeroptera | Ephemerellidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Drunella grandis | Ephemeroptera | Ephemerellidae |
| Drunella grandis ingens | Ephemeroptera | Ephemerellidae |
| Drunella sp | Ephemeroptera | Ephemerellidae |
| Drunella spinifera | Ephemeroptera | Ephemerellidae |
| Dryopidae | Coleoptera | Dryopidae |
| Dugesia tigrina | Tricladida | --- |
| Dytiscidae | Coleoptera | Dytiscidae |
| Dytiscus sp | Coleoptera | Dytiscidae |
| Ecclisomyia sp | Trichoptera | Limnephilidae |
| Eccoptura sp | Plecoptera | Perlidae |
| Ectemnia sp | Diptera | Simuliidae |
| Ectopria sp | Coleoptera | Psephenidae |
| Einfeldia sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Elmidae | Coleoptera | Elmidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Empididae | Diptera | Empididae |
| Enallagma borealis | Zygoptera | Coenagrionidae |
| Enallagma cyathigerum | Zygoptera | Coenagrionidae |
| Enallagma sp | Zygoptera | Coenagrionidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Enchytraeidae | Haplotaxida | Enchytraeidae |
| Enchytraeus sp | Haplotaxida | Enchytraeidae |
| Endochironomus sp | Diptera | Chironomidae |
| Entomobryidae | Collembola | Entomobryidae |
| Eocosmoecus sp | Trichoptera | Limnephilidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Epeorus (Iron) sp | Ephemeroptera | Heptageniidae |
| Epeorus albertae | Ephemeroptera | Heptageniidae |
| Epeorus deceptivus | Ephemeroptera | Heptageniidae |
| Epeorus longimanus | Ephemeroptera | Heptageniidae |
| Epeorus sp | Ephemeroptera | Heptageniidae |
| Ephemerella attenuatela | Ephemeroptera | Ephemerellidae |
| Ephemerella aurivillii | Ephemeroptera | Ephemerellidae |
| Ephemerella drunella | Ephemeroptera | Ephemerellidae |
| Ephemerella inermis | Ephemeroptera | Ephemerellidae |
| Ephemerella infrequens | Ephemeroptera | Ephemerellidae |
| Ephemerella micheneri | Ephemeroptera | Ephemerellidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Ephemerella mollitia | Ephemeroptera | Ephemerellidae |
| Ephemerella serratella | Ephemeroptera | Ephemerellidae |
| Ephemerella sp | Ephemeroptera | Ephemerellidae |
| Ephemerellidae | Ephemeroptera | Ephemerellidae |
| Ephemeroptera | Ephemeroptera | --- |
| Ephydridae | Diptera | Ephydridae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Epischura sp | Calanoida | Temoridae |
| Epoicocladius sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Erioptera sp | Diptera | Tipulidae |
| Erpobdella sp | Arhynchobdellida | Erpobdellidae |
| Eucyclops sp | Cyclopoida | Cyclopidae |
| Eukiefferiella brehmi | Diptera | Chironomidae |
| Eukiefferiella brevicalcar | Diptera | Chironomidae |
| Eukiefferiella claripennis | Diptera | Chironomidae |
| Eukiefferiella cyanea | Diptera | Chironomidae |
| Eukiefferiella devonica | Diptera | Chironomidae |
| Eukiefferiella gracei | Diptera | Chironomidae |
| Eukiefferiella sp | Diptera | Chironomidae |
| Eurycercus (Bullatifrons) sp | Cladocera | Eurycercinae |
| Eurycercus lamellatus | Cladocera | Chydoridae |
| Eurycercus sp | Cladocera | Eurycercinae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Euryhapsis sp | Diptera | Chironomidae |
| Eurytemora affinis | Calanoida | Temoridae |
| Eurytemora sp | Calanoida | Temoridae |
| Eylais sp | Trombidiformes | Eylaidae |
| Fabria sp | Trichoptera | Phryganeidae |
| Ferrisia sp | Gastropoda | Ancylidae |
| Forelia sp | Trombidiformes | Pionidae |
| Formicidae | Hymenoptera | Formicidae |
| Fossaria modicella | Basommatophora | Lymnaeidae |
| Fossaria sp | Basommatophora | Lymnaeidae |
| Fossaria truncatula | Basommatophora | Lymnaeidae |
| Frontipoda sp | Trombidiformes | Oxidae |
| Gammarus lacustris | Amphipoda | Gammaridae |
| Gastropoda | --- | --- |
| Gerridae | Heteroptera | Gerridae |
| Glossiphonia complanata | Rhynchobdellida | Glossiphoniidae |
| Glossiphonia sp | Rhynchobdellida | Glossiphoniidae |
| Glossiphoniidae | Rhynchobdellida | Glossiphoniidae |
| Glossosoma sp | Trichoptera | Glossosomatidae |
| Glossosomatidae | Trichoptera | Glossosomatidae |
| Glyptotendipes sp | Diptera | Chironomidae |
| Gnathophausia zoea | Lophogastrida | Lophogastridae |
| Gonomyia sp | Diptera | Tipulidae |
| Gonomyodes sp | Diptera | Tipulidae |
| Graptoleberis testudinaria | Cladocera | Chydoridae |
| Grensia praeterita | Trichoptera | Limnephilidae |
| Grensia sp | Trichoptera | Limnephilidae |
| Guttipelopia sp | Diptera | Chironomidae |
| Gymnometriocnemus sp | Diptera | Chironomidae |
| Gymnopais sp | Diptera | Simuliidae |
| Gyraulus parvus | Basommatophora | Planorbidae |
| Gyraulus sp | Basommatophora | Planorbidae |
| Haliplidae | Coleoptera | Haliplidae |
| Haliplus sp | Coleoptera | Haliplidae |
| Haploperla sp | Plecoptera | Chloroperlidae |
| Haplotaxidae | Haplotaxida | Haplotaxidae |
| Haplotaxis gordioides | Haplotaxida | Haplotaxidae |
| Harnischia sp | Diptera | Chironomidae |
| Harpacticoida | Harpacticoida | --- |
| Hebrus sp | Heteroptera | Hebridae |
| Heleniella sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Helisoma sp | Basommatophora | Planorbidae |
| Helobdella sp | Pharyngobdellida | Glossiphoniidae |
| Helobdella stagnalis | Pharyngobdellida | Glossiphoniidae |
| Helophorus sp | Coleoptera | Hydrophilidae |
| Hemerodromia sp | Diptera | Empididae |
| Heptagenia sp | Ephemeroptera | Heptageniidae |
| Heptageniidae | Ephemeroptera | Heptageniidae |
| Hesperoconopa sp | Diptera | Tipulidae |
| Hesperocorixa sp | Heteroptera | Corixidae |
| Hesperoperla pacifica | Plecoptera | Perlidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Hesperoperla sp | Plecoptera | Perlidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Hesperophylax sp | Trichoptera | Limnephilidae |
| Heterlimnius sp | Coleoptera | Elmidae |
| Heteroceridae | Coleoptera | Heteroceridae |
| Heterocope septentrionalis | Calanoida | Temoridae |
| Heteroptera | Heteroptera | --- |
| Heterotanytarsus sp | Diptera | Chironomidae |
| Heterotrissocladius marcidus | Diptera | Chironomidae |
| Heterotrissocladius sp | Diptera | Chironomidae |
| Hexagenia sp | Ephemeroptera | Ephemeridae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Hexatoma sp | Diptera | Tipulidae |
| Hirudinea | --- | --- |
| Holorusia sp | Diptera | Tipulidae |
| Homophylax sp | Trichoptera | Limnephilidae |
| Homoptera | Homoptera | --- |
| Hyalella azteca | Amphipoda | Hyalellidae |
| Hydaticus sp | Coleoptera | Dytiscidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Hydatophylax sp | Trichoptera | Limnephilidae |
| Hydra sp | Hydroida | Hydridae |
| Hydracarina | Hydracarina | --- |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Hydrellia sp | Diptera | Ephydridae |
| Hydrobaenus sp | Diptera | Chironomidae |
| Hydrobia sp | Neotaenioglossa | Hydrobiidae |
| Hydrometridae | Heteroptera | Hydrometridae |
| Hydrophorus sp | Diptera | Dolichopodidae |
| Hydropsyche sp | Trichoptera | Hydropsychidae |
| Hydropsychidae | Trichoptera | Hydropsychidae |
| Hydroptila sp | Trichoptera | Hydroptilidae |
| Hydroptilidae | Trichoptera | Hydroptilidae |
| Hydrovatus sp | Coleoptera | Dytiscidae |
| Hydrozetes sp | Sarcoptiformes | Hydrozetidae |
| Hygrobates sp | Trombidiformes | Hygrobatidae |
| Hymanella sp | Tricladida | Planariidae |
| Hymenoptera | Hymenoptera | --- |
| Hypogastrura sp | Collembola | Hypogastruridae |
| Hypogastruridae | Collembola | Hypogastruridae |
| Ichneumonidae | Hymenoptera | Ichneumonidae |
| Ilyocryptus sordidus | Cladocera | Macrothricidae |
| Ilyodrilus sp | Haplotaxida | Tubificidae |
| Imania sp | Trichoptera | Limnephilidae |
| Insecta | --- | --- |
| Insecta | --- | --- |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Isogenoides sp | Plecoptera | Perlodidae |
| Isogenus sp | Plecoptera | Perlodidae |
| Isoperla quinquepunctata | Plecoptera | Perlodidae |
| Isoperla similis | Plecoptera | Perlodidae |
| Isoperla sp | Plecoptera | Perlodidae |
| Isopoda | Isopoda | --- |
| Isotoma sp | Collembola | Isotomidae |
| Isotomidae | Collembola | Isotomidae |
| Isotomurus sp | Collembola | Isotomidae |
| Kathroperla perdita | Plecoptera | Chloroperlidae |
| Kathroperla sp | Plecoptera | Chloroperlidae |
| Kawamuracarus sp | Hydracarina | Kawamuracarinae |
| Kiefferulus sp | Diptera | Chironomidae |
| Kincaidiana hexatheca | Lumbriculida | Lumbriculidae |
| Kincaidiana sp | Lumbriculida | Lumbriculidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Kogotus sp | Plecoptera | Perlodidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Krendowskia sp | Trombidiformes | Krendowskiidae |
| Krenopelopia sp | Diptera | Chironomidae |
| Krenosmittia sp | Diptera | Chironomidae |
| Labrundinia sp | Diptera | Chironomidae |
| Laphria sp | Diptera | Asilidae |
| Larsia sp | Diptera | Chironomidae |
| Lebertia sp | Trombidiformes | Lebertiidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Lepidoptera | Lepidoptera | --- |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Lepidostoma sp | Trichoptera | Lepidostomatidae |
| Leptoceridae | Trichoptera | Leptoceridae |
| Leptodiaptomus pribiloffensis | Calanoida | Diaptomidae |
| Leptophlebia sp | Ephemeroptera | Leptophlebiidae |
| Leptophlebiidae | Ephemeroptera | Leptophlebiidae |
| Leptotarsus sp | Diptera | Tipulidae |
| Leuctra sp | Plecoptera | Leuctridae |
| Leuctridae | Plecoptera | Leuctridae |
| Limacidae | Stylommatophora | Limacidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Limnephilidae | Trichoptera | Limnephilidae |
| Limnephilus sp | Trichoptera | Limnephilidae |
| Limnesia sp | Trombidiformes | Limnesiidae |
| Limnocythere sp | Podocopa | Limnocytheridae |
| Limnodrilus sp | Haplotaxida | Tubificidae |
| Limnophila sp | Diptera | Tipulidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Limnophora sp | Diptera | Muscidae |
| Limnophyes sp | Diptera | Chironomidae |
| Limonia sp | Diptera | Tipulidae |
| Lispe sp | Diptera | Muscidae |
| Lispocephala sp | Diptera | Muscidae |
| Lumbricidae | Haplotaxida | Lumbricidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Lumbriculidae | Lumbriculida | Lumbriculidae |
| Lumbriculus sp | Lumbriculida | Lumbriculidae |
| Lumbriculus variegatus | Lumbriculida | Lumbriculidae |
| Lymnaea sp | Basommatophora | Lymnaeidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Lymnaea stagnalis | Basommatophora | Lymnaeidae |
| Lymnaeidae | Basommatophora | Lymnaeidae |
| Lynceus brachyurus | Diplostraca | Lynceidae |
| Lynceus sp | Diplostraca | Lynceidae |
| Macrobiotus sp | Eutardigrada | Macrobiotidae |
| Macronychus sp | Coleoptera | Elmidae |
| Macrostomum sp | Macrostomida | Macrostomidae |
| Macrothicidae | Cladocera | Macrothicidae |
| Malenka sp | Plecoptera | Nemouridae |
| Mallochiola sp | Heteroptera | Microphysidae |
| Mallochohelea sp | Diptera | Ceratopogonidae |
| Manayunkia speciosa | Canalipalpata | Sabellidae |
| Mayatrichia sp | Trichoptera | Hydroptilidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Megarcys sp | Plecoptera | Perlodidae |
| Megaselia sp | Diptera | Phoridae |
| Metacnephia sp | Diptera | Simuliidae |
| Metriocnemus sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Micrasema sp | Trichoptera | Brachycentridae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Micropsectra sp | Diptera | Chironomidae |
| Microtendipes sp | Diptera | Chironomidae |
| Mideopsis sp
sp | Trombidiformes | Mideopsidae |
| Milnesium tardigradum | Eutardigrada | Milnesiidae |
| Molana flavicornis | Trichoptera | Molannidae |
| Molannodes tinctus | Trichoptera | Molannidae |
| Molophilus sp | Diptera | Tipulidae |
| Monodiamesa sp | Diptera | Chironomidae |
| Monopelopia sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Muscidae | Diptera | Muscidae |
| Muscomorpha | Diptera | --- |
| Mycetophilidae | Diptera | Mycetophilidae |
| Mystacides sp | Trichoptera | Leptoceridae |
| Naididae | Haplotaxida | Naididae |
| Nais behningi | Haplotaxida | Naididae |
| Nais communis | Haplotaxida | Naididae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Nais sp | Haplotaxida | Naididae |
| Nanocladius sp | Diptera | Chironomidae |
| Natarsia sp | Diptera | Chironomidae |
| Neaviperla sp | Plecoptera | Chloroperlidae |
| Nectopsyche sp | Trichoptera | Leptoceridae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Nematoda | --- | --- |
| Nemotaulius hostilis | Trichoptera | Limnephilidae |
| Nemotaulius sp | Trichoptera | Limnephilidae |
| Nemotelus sp | Diptera | Stratiomyidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Nemoura sp | Plecoptera | Nemouridae |
| Nemouridae | Plecoptera | Nemouridae |
| Neoperla clymene | Plecoptera | Perlidae |
| Neoranopsis sp | Trombidiformes | --- |
| Nephelopsis obscura | Pharyngobdellida | Erpobdellidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Neumania sp | Trombidiformes | Unionicolidae |
| Neureclipsis bimaculata | Trichoptera | Polycentropodidae |
| Nilotanypus sp | Diptera | Chironomidae |
| Notiomyia sp | Trichoptera | Calamoceratidae |
| Notiphila sp | Diptera | Ephydridae |
| Ochrotrichia sp | Trichoptera | Hydroptilidae |
| Ochteridae | Heteroptera | Ochteridae |
| Odonata | Odonata | --- |
| Odontomesa sp | Diptera | Chironomidae |
| Oecetis sp | Trichoptera | Leptoceridae |
| Oligochaeta | --- | --- |
| Oligophlebodes sp | Trichoptera | Uenoidae |
| Onocosmoecus sp | Trichoptera | Limnephilidae |
| Oreodytes sp | Coleoptera | Dytiscidae |
| Oreogeton sp | Diptera | Empididae |
| Oribatei group | Oribatida | Oribatei |
| Ormosia sp | Diptera | Tipulidae |
| Orthocladiinae | Diptera | Chironomidae |
| Orthocladius frigidus | Diptera | Chironomidae |
| Orthocladius sp | Diptera | Chironomidae |
| Orthotrichia sp | Trichoptera | Hydroptilidae |
| Ostracoda | Ostracoda | --- |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Oxyethira sp | Trichoptera | Hydroptilidae |
| Pagastia orthogonia | Diptera | Chironomidae |
| Pagastia partica | Diptera | Chironomidae |
| Pagastia sp | Diptera | Chironomidae |
| Pagastiella sp | Diptera | Chironomidae |
| Palpomyia sp | Diptera | Ceratopogonidae |
| Paracapnia sp | Plecoptera | Taeniopterygidae |
| Parachironomus sp | Diptera | Chironomidae |
| Paracladius sp | Diptera | Chironomidae |
| Paracladopelma sp | Diptera | Chironomidae |
| Paracricotopus sp | Diptera | Chironomidae |
| Paracyclops fimbriatus | Cyclopoida | Cyclopidae |
| Paradelphomyia sp | Diptera | Tipulidae |
| Parakiefferiella sp | Diptera | Chironomidae |
| Paralauterborniella sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Paraleptophlebia sp | Ephemeroptera | Leptophlebiidae |
| Paraleuctra sp | Plecoptera | Leuctridae |
| Paramerina sp | Diptera | Chironomidae |
| Parametriocnemus sp | Diptera | Chironomidae |
| Paranais sp | Haplotaxida | Naididae |
| Paraperla sp | Plecoptera | Chloroperlidae |
| Paraphrosylus sp | Diptera | Dolichopodidae |
| Parapsyche sp | Trichoptera | Hydropsychidae |
| Paratanytarsus sp | Diptera | Chironomidae |
| Paratendipes sp | Diptera | Chironomidae |
| Parorthocladius sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Pedicia sp | Diptera | Tipulidae |
| Peloscolex sp | Haplotaxida | Tubificidae
Tubificidae |
| Pentaneura sp | Diptera | Chironomidae |
| Pentaneurini | Diptera | Chironomidae |
| Pentatomidae | Heteroptera | Pentatomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Pericoma sp | Diptera | Psychodidae |
| Periscelididae | Diptera | Periscelididae |
| Perlesta placida | Plecoptera | Chloroperlidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Perlidae | Plecoptera | Perlidae |
| Perlodidae | Plecoptera | Perlodidae |
| Perlomyia sp | Plecoptera | Chloroperlidae |
| Phaenopsectra sp | Diptera | Chironomidae |
| Phagocata morgani | Tricladida | Planariidae |
| Phallodrilus sp | Haplotaxida | Tubificidae |
| Philorus sp | Diptera | Blephariceridae |
| Phryganea sp | Trichoptera | Phryganeidae |
| Phryganeidae | Trichoptera | Phryganeidae |
| Physa gyrina | Basommatophora | Physidae |
| Physa sp | Basommatophora | Physidae |
| Physella gyrina | Basommatophora | Physidae |
| Piscicola salmonsitica | Rhynchobdellida | Piscicolidae |
| Piscicola sp | Rhynchobdellida | Piscicolidae |
| Pisidium casertanum | Veneroida | Pisidiidae |
| Pisidium conventus | Veneroida | Pisidiidae |
| Pisidium ferrugineum | Veneroida | Pisidiidae |
| Pisidium insigne | Veneroida | Pisidiidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Pisidium sp | Veneroida | Pisidiidae |
| Pisidium subtruncatum | Veneroida | Pisidiidae |
| Platycentropus sp | Trichoptera | Limnephilidae |
| Platyhelminthes | --- | --- |
| Plecoptera | Plecoptera | --- |
| Pleuroxus denticulatus | Cladocera | Chydoridae |
| Pleuroxus procurvatus | Cladocera | Chydoridae |
| Pleuroxus sp | Cladocera | Chydoridae |
| Pleuroxus striatus | Cladocera | Chydoridae |
| Pleuroxus trigonellus | Cladocera | Chydoridae |
| Podmosta sp | Plecoptera | Nemouridae |
| Podura aquatica | Collembola | Poduridae |
| Podura sp | Collembola | Poduridae |
| Poduridae | Collembola | Poduridae |
| Polycelis coronata | Tricladida | Planariidae |
| Polycentropus sp | Trichoptera | Polycentropodidae |
| Polypedilum (Pentapedilum) sp | Diptera | Chironomidae |
| Polypedilum (Polypedilum) sp | Diptera | Chironomidae |
| Polypedilum sp | Diptera | Chironomidae |
| Polyphemus pediculus | Cladocera | Polyphemidae |
| Pontoporeia sp | Amphipoda | Haustoriidae |
| Potamothrix sp | Haplotaxida | Tubificidae |
| Potthastia gaedii | Insecta | Chironomidae |
| Potthastia longimana | Insecta | Chironomidae |
| Potthastia sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Prionocera sp
Prionocera sp | Diptera | Tipulidae |
| Pristina foreli | Haplotaxida | Naididae |
| Pristina sp | Haplotaxida | Naididae |
| Probezzia sp | Diptera | Ceratopogonidae |
| Procladius sp | Diptera | Chironomidae |
| Prodiamesa sp | Diptera | Chironomidae |
| Promenetus umbilicatellus | Basommatophora | Planorbidae |
| Prosimulium onychodactylum | Diptera | Simuliidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Prosimulium sp | Diptera | Simuliidae |
| Prostoia sp | Plecoptera | Nemouridae |
| Protanyderus sp | Diptera | Tanyderidae |
| Protanypus sp | Diptera | Chironomidae |
| Protzia sp | Trombidiformes | Protziidae |
| Psectrocladius sp | Diptera | Chironomidae |
| Psectrotanypus sp | Diptera | Chironomidae |
| Psephenidae | Coleoptera | Psephenidae |
| Psephenus sp | Coleoptera | Psephenidae |
| Pseudochironomus sp | Diptera | Chironomidae |
| Pseudocloeon sp | Ephemeroptera | Baetidae |
| Pseudodiamesa sp | Diptera | Chironomidae |
| Pseudokiefferiella sp | Diptera | Chironomidae |
| Pseudokiefferilla sp | Diptera | Chironomidae |
| Pseudoleon sp | Odonata | Libellulidae |
| Pseudolimnophila sp | Diptera | Tipulidae |
| Pseudosmittia sp | Diptera | Chironomidae |
| Pseudostenophylax sp | Trichoptera | Limnephilidae |
| Psocoptera | Psocoptera | --- |
| Psychoda sp | Diptera | Psychodidae |
| Psychodidae | Diptera | Psychodidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Psychoglypha sp | Trichoptera | Limnephilidae |
| Psychoglypha subborealis | Trichoptera | Limnephilidae |
| Psychomyiidae | Trichoptera | Psychomyiidae |
| Psyllidae | Homoptera | Psyllidae |
| Pteronarcella badia | Plecoptera | Pteronarcidae |
| Pteronarcella regularis | Plecoptera | Pteronarcidae |
| Pteronarcella sp | Plecoptera | Pteronarcidae |
| Pteronarcidae | Plecoptera | Pteronarcidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Pteronarcys californica | Plecoptera | Pteronarcidae |
| Pteronarcys dorsata | Plecoptera | Pteronarcidae |
| Pteronarcys sp | Plecoptera | Pteronarcidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Pupillidae | Stylommatophora | Pupillidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Rhabdomastix sp | Diptera | Tipulidae |
| Rheocricotopus sp | Diptera | Chironomidae |
| Rheosmittia sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Rheotanytarsus sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Rhithrogena sp | Ephemeroptera | Heptageniidae |
| Rhyacodrilus coccineus | Haplotaxida | Tubificidae |
| Rhyacodrilus sp | Haplotaxida | Tubificidae |
| Rhyacophila acropedes | Trichoptera | Rhyacophilidae |
| Rhyacophila angelita | Trichoptera | Rhyacophilidae |
| Rhyacophila bifila | Trichoptera | Rhyacophilidae |
| Rhyacophila coloradensis | Trichoptera | Rhyacophilidae |
| Rhyacophila hyalinata | Trichoptera | Rhyacophilidae |
| Rhyacophila sp | Trichoptera | Rhyacophilidae |
| Rhyacophila tucula | Trichoptera | Rhyacophilidae |
| Rhyacophila vaccua | Trichoptera | Rhyacophilidae |
| Rhyacophila vagrita | Trichoptera | Rhyacophilidae |
| Rhyacophila vao | Trichoptera | Rhyacophilidae |
| Rhyacophila vepulsa | Trichoptera | Rhyacophilidae |
| Rhyacophila verrula | Trichoptera | Rhyacophilidae |
| Rhyacophila vocala | Trichoptera | Rhyacophilidae |
| Rhyacophilidae | Trichoptera | Rhyacophilidae |
| Rhynchobdellida | Rhynchobdellida | --- |
| Roederiodes sp | Diptera | Empididae |
| Saetheria sp | Diptera | Chironomidae |
| Saldidae | Heteroptera | Saldidae |
| Scapholeberis mucronata | Cladocera | Daphniidae |
| Sciaridae | Diptera | Sciaridae |
| Sciomyzidae | Diptera | Sciomyzidae |
| Sergentia sp | Diptera | Chironomidae |
| Serratella levis | Ephemeroptera | Ephemerellidae |
| Serratella sp | Ephemeroptera | Ephemerellidae |
| Serratella tibialis | Ephemeroptera | Ephemerellidae |
| Setvena sp | Plecoptera | Perlodidae |
| Shipsa sp | Plecoptera | Nemouridae |
| Sida crystallina | Cladocera | Sididae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Simocephalus sp | Cladocera | Daphnidae |
| Simocephalus vetulus | Cladocera | Daphnidae |
| Simuliidae | Diptera | Simuliidae |
| Simulium arcticum | Diptera | Simuliidae |
| Simulium meridionale | Diptera | Simuliidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Simulium sp | Diptera | Simuliidae |
| Siphlonuridae | Ephemeroptera | Siphlonuridae |
| Siphlonurus sp | Ephemeroptera | Siphlonuridae |
| Sisyra sp | Megaloptera | Sisyridae |
| Skwala curvata | Plecoptera | Perlodidae |
| Skwala parallela | Plecoptera | Perlodidae |
| Skwala sp | Plecoptera | Perlodidae |
| Slavina appendiculata | Haplotaxida | Naididae |
| Sminthuridae | Symphypleona | Sminthuridae |
| Sminthurides sp | Symphypleona | Sminthuridae |
| Smittia sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Sperchon sp | Trombidiformes | Sperchonidae |
| Sphaeriidae | Coleoptera | Sphaeriidae |
| Sphaerium nitidum | Veneroida | Pisidiidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Sphaerium sp | Veneroida | Pisidiidae |
| Sphaeromias sp | Diptera | Ceratopogonidae |
| Sphecidae | Hymenoptera | Sphecidae |
| Stagnicola arctica | Basommatophora | Lymnaeidae |
| Stagnicola arcticus | Basommatophora | Lymnaeidae |
| Stagnicola kennicotti | Basommatophora | Lymnaeidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Stagnicola reflexa | Basommatophora | Lymnaeidae |
| Staphylinidae | Coleoptera | Staphylinidae |
| Stempellina sp | Diptera | Chironomidae |
| Stempellinella sp | Diptera | Chironomidae |
| Stenelmis sp | Coleoptera | Elmidae |
| Stenochironomus sp | Diptera | Chironomidae |
| Stictochironomus sp | Diptera | Chironomidae |
| Stilobezzia sp | Diptera | Ceratopogonidae |
| Stilocladius sp | Diptera | Chironomidae |
| Stratiomyidae | Diptera | Stratiomyidae |
| Streblocerus serricaudatus | Diplostraca | Macrothricidae |
| Stylaria lacustris | Haplotaxida | Naididae |
| Stylodrilus heringianus | Lumbriculida | Lumbriculidae |
| Stylodrilus sp | Lumbriculida | Lumbriculidae |
| Sublettea sp | Diptera | Chironomidae |
| Suwallia sp | Plecoptera | Chloroperlidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Sweltsa sp | Plecoptera | Chloroperlidae |
| Symphyta | Hymenoptera | --- |
| Synorthocladius sp | Diptera | Chironomidae |
| Synurella sp | Amphipoda | Crangonyctidae |
| Syrphidae | Diptera | Syrphidae |
| Syrphus sp | Diptera | Syrphidae |
| Systenus sp | Diptera | Dolichopodidae |
| Tabanidae | Diptera | Tabanidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Taenionema sp | Plecoptera | Taeniopterygidae |
| Taeniopterygidae | Plecoptera | Taeniopterygidae |
| Taeniopteryx sp | Plecoptera | Taeniopterygidae |
| Tanypodinae | Diptera | Tanypodinae |
| Tanypus sp | Diptera | Chironomidae |
| Tanytarsini sp | Diptera | Chironomidae |
| Tanytarsus sp | Diptera | Chironomidae |
| Tardigrada | --- | --- |
| Telmatodrilus sp | Haplotaxida | Tubificidae |
| Telmatogetoninae | Diptera | Chironomidae |
| Telmatoscopus sp | Diptera | Psychodidae |
| Teutonia sp | Trombidiformes | Teutoniidae |
| Theliopsyche sp | Trichoptera | Lepidostomatidae |
| Thienemanniella sp | Diptera | Chironomidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Thienemannimyia sp | Diptera | Chironomidae |
| Thysanoptera | Thysanoptera | --- |
| Tipula sp | Diptera | Tipulidae |
| Tipulidae | Diptera | Tipulidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Torrenticola sp | Trombidiformes | Torrenticolidae |
| Trematoda | --- | --- |
| Tribelos sp | Diptera | Chironomidae |
| Trichoclinocera sp | Diptera | Empididae |
| Trichoptera | Trichoptera | --- |
| Trichotanypus sp | Diptera | Chironomidae |
| Tricladida | Tricladida | --- |
| Tricorythodes sp | Ephemeroptera | Tricorythidae |
| Trissopelopia sp | Diptera | Chironomidae |
| Triznaka sp | Plecoptera | Chloroperlidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Trombidiformes | Trombidiformes | --- |
| Tubifex sp | Haplotaxida | Tubificidae |
| Tubificidae | Haplotaxida | Tubificidae |
| Turbellaria | --- | --- |
| Tvetenia bavarica | Diptera | Chironomidae |
| Tvetenia sp | Diptera | Chironomidae |
| Twinnia sp | Diptera | Simuliidae |
| Uncinais uncinata | Haplotaxida | Naididae |
| Unionicola sp | Trombidiformes | Unionicolidae |
| urycercus bullatifrons | Cladocera | Chydoridae |
| Utaperla sopladora | Plecoptera | Chloroperlidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Utaperla sp | Plecoptera | Chloroperlidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Valvata sincera | Mesogastropoda | Valvatidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Valvata sp | Mesogastropoda | Valvatidae |
| Vejdovskeylla comata | Haplotaxida | Naididae |
| Vertigo sp | Stylommatophora | Pupillidae |
| Visoka cataractae | Plecoptera | Nemouridae |
| Wandesia sp | Trombidiformes | Protziidae |
| Wettina sp | Trombidiformes | Pionidae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Wiedemannia sp | Diptera | Empididae |
| Xenochironomus sp | Diptera | Chironomidae |
| Yugus sp | Plecoptera | Perlodidae |
| Zalutschia sp | Diptera | Chironomidae |
| Zapada cinctipes | Plecoptera | Nemouridae |
| Zapada oregonensis | Plecoptera | Nemouridae |
![Invertebrate Image(s) Available](/web/20061209131611im_/http://www.pyr.ec.gc.ca/bisy/gfx/icons/invertphotos.gif) | Zapada sp | Plecoptera | Nemouridae |
| Zavrelimyia sp | Diptera | Chironomidae |
| Zygoptera | Odonata | --- |