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Part 1: OverviewCOSEWIC candidate species are species not yet assessed by COSEWIC that have been identified by COSEWIC as potentially being at risk. As such, they are candidates for detailed status assessment. COSEWIC's Species Specialist Subcommittees (SSCs) and the Aboriginal Traditional Knowledge (ATK) Subcommittee use their expert knowledge and judgment to identify candidate species. They draw on numerous sources of information including (where available) the General Status of Wild Species in Canada, NatureServe ranks, jurisdictional monitoring, and various international assessment processes (including the IUCN Red List). Species on the candidate list have been ranked into three priority groups by the SSCs to reflect the relative urgency with which each species should receive a COSEWIC assessment. Group 1 contains species of highest priority for assessment by COSEWIC, and includes species that are suspected to be at high risk of extirpation from Canada. Groups 2 and 3 contain species that are of intermediate and lower priority for COSEWIC assessment, respectively. Rationales for inclusion on the candidate list differ among the taxonomic groups considered by COSEWIC, reflecting the vast differences in their life history, and differences in our knowledge about the species. For the freshwater fish candidate species, provinces or territories marked with † are those where the species is especially at risk. Candidate species from the list below that appear on the current Call for Bids are marked with an asterisk * Part 2: The COSEWIC Candidate List
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Species name |
Common name |
Range in Canada |
Amphibians |
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No candidates currently listed | ||
Arthropods (48) |
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Group 1 - High priority candidates | ||
Cicindela parowana wallisi * |
Dark Saltflat Tiger Beetle |
BC |
Erynnis martialis |
Mottled Duskywing |
MB, ON |
Gomphus ventricosus * |
Skillet Clubtail dragonfly |
ON, QC, NB, NS |
Hemileuca maia |
Bogbean Buck-moth |
ON |
Hydroporus carri |
Carr’s diving beetle |
AB |
Megathymus streckeri |
Strecker's Giant Skpper |
AB |
Neurocordulia obsoleta |
Umber Shadowdragon |
NB |
Nicrophorus americanus * |
North American Burying Beetle |
MB, ON, QC, NS |
Papaipema sp. * |
Sable Island Borer |
NS |
Rhionaeschna mutata |
Spatterdock darner dragonfly |
ON, NS |
Sanfilippodytes burtae * |
Bertha’s diving beetle |
AB |
Speyeria mormonia erinna |
Mormon Fritilary |
BC |
Stylurus laurae |
Laura's Clubtail Dragonfly |
ON |
Stylurus olivaceus |
Olive Clubtail dragonfly |
BC |
Yponomeuta atomocella |
Hop-tree Twig Borer |
ON |
Group 2 - Mid priority candidates | ||
Agabus margaretae |
|
|
Anisota manitobensis |
Manitoba Oakworm Moth |
MB |
Euphydryas (anicia) bernadetta |
Bernadette's Checkersport |
AB, SK |
Euphydryas editha hutchinsi |
Edith’s Checkerspot hutchinsi subspecies |
AB, SK |
Gomphus abbreviatus |
Spine-crowned Clubtail Dragonfly |
NB, NS |
Hemileuca nevadensis |
Nevada Buck-moth |
SK, MB, AB |
Hemileuca nuttalli |
Nuttall’s Buck-moth |
BC |
Octogomphus specularis |
Grappletail |
BC |
Group 3 - Low priority candidates | ||
Anacampsis lupinella |
|
ON |
Areniscythris "Saskatchewan" |
|
SK |
Callophrys mossii mossii |
Moss’s Elfin |
BC |
Chlosyne hoffmanni |
Hoffmann’s Checkerspot |
BC |
Cicindela cuprascens |
Coppery Tiger Beetle |
MB |
Coleophora manitoba |
Casebearer Moth |
MB |
Coleophora ramitella |
Casebearer moth |
ON |
Cupido comyntas |
Eastern Tailed Blue (BC population) |
BC |
Erora laeta |
Early Hairstreak |
ON, QC, NB, NS |
Erynnis propertius |
Propertius Duskywing |
BC |
Euphilotes ancilla |
Rocky Mountain Dotted Blue |
AB, SK |
Heterosternota allegheniansus |
|
QC, NB |
Heterosternota chocheconis |
|
QC, NB |
Icarica icarioides blackmorei |
Blackmore’s Blue |
BC |
Loranthomitoura johnsoni |
Johnson’s Hairstreak |
BC |
Lycaena editha |
Edith's Copper |
BC, AB |
Neoporus blanchardi |
|
NS |
Neoporus tennetum |
|
ON |
Neurocordulia michaeli |
Broadtailed Shadowdragon |
NB |
Oeneis bore gaspeensis |
Gaspé Arctic |
QC |
Papilio machaon pikei |
Pike’s Old World Swallowtail |
AB, BC |
Polites sabuleti |
Sandhill Skipper |
BC |
Speyeria egleis |
Great Basin Fritillary |
AB |
Speyeria zerene bremnerii |
Bremner's Zerene Fritillary |
BC |
Stylurus plagiatus |
Russet-tipped Clubtail |
ON |
Birds (4) |
||
Group 1 - High priority candidates | ||
Caprimulgus vociforus * |
Whip-poor-will |
SK, MB, ON, QC, NB, NS |
Hirundo rustica |
Barn Swallow |
YT, NT, NU, BC, AB, SK, MB, ON, QC, NB, NS, PE, NL |
Spizella pusilla |
Field Sparrow |
ON, QC |
Thaleichthys pacificus |
Eulachon |
Pacific Ocean |
Group 2 - Mid priority candidates | ||
List in preparation |
||
Group 3 - Low priority candidates | ||
List in preparation |
||
Fishes (freshwater) (19) |
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Group 1 - High priority candidates | ||
Cottus bairdii punctulatus |
Mottled Sculpin (Flathead population) |
BC |
Ichthyomyzon unicuspis * |
Silver Lamprey |
MB†, ON†, QC |
Prosopium coulterii |
Pygmy Whitefish |
YT, BC, AB†, ON† |
Group 2 - Mid priority candidates | ||
Ameiurus natilis |
Yellow Bullhead |
ON, QC† |
Catostomus macrocheilus |
Largescale Sucker |
BC, AB† |
Coregonus autumnalis |
Arctic Cisco |
YT, NT†, NU† |
Coregonus sardinella |
Least Cisco |
YT, NT†, NU†, BC† |
Hybognathus hankinsoni |
Brassy Minnow |
BC†, AB, SK†, MB, ON, QC† |
Morone americana |
White Perch |
ON, QC†, NB, NS, PE |
Moxostoma valenciennesi |
Greater Redhorse |
ON, QC |
Notropis blennius |
River Shiner |
AB, SK, MB† |
Noturus flavus |
Stonecat |
AB, SK†, MB, ON, QC† |
Phoxinus eos |
Northern Redbelly Dace |
NT, BC, AB, SK†, MB, ON, QC, NB, NS, PE† |
Salvelinus malma |
Dolly Varden |
YT, NT†, NU, BC† |
Salvelinus namaycush |
Lake Trout |
YT†, NT, NU, AB†, SK, MB, ON, QC†, NB†, NS†, NL |
Group 3 - Low priority candidates | ||
Coregonus nasus |
Broad Whitefish |
YT, NT, NU, BC† |
Fundulus heteroclitus |
Mummichog |
QC, NB, NS, PE, NL† |
Lampetra appendix |
American Brook Lamprey |
ON†, QC |
Thymallus arcticus |
Arctic Grayling (includes Beringian, Nahanni, and Missouri forms) |
YT, NT†, NU†, BC, AB†, SK, MB |
Fishes (marine) (9) |
||
Group 1 - High priority candidates | ||
Hippoglossoides platessoides * |
American Plaice |
NB, NS, NL, Atlantic Ocean |
Hippoglossus hippoglossus |
Atlantic Halibut |
NB, NS, NL, Atlantic Ocean |
Notacanthus chemnitzi |
Spiny Eel |
Atlantic Ocean |
Pollachius virens |
Pollack |
NB, NS, NL, Atlantic Ocean |
Sebastes brevispinis |
Silvergrey Rockfish |
Pacific Ocean |
Sebastes flavidus |
Yellowtail Rockfish |
Pacific Ocean |
Sebastes mentella * |
Deepwater Redfish |
Atlantic Ocean, Arctic Ocean |
Sebastolobus alascanus |
Shortspine Thornyhead |
Pacific Ocean |
Zoarces americanus |
Ocean Pout |
NS, NL, Atlantic Ocean |
Group 2 - Mid priority candidates | ||
No candidates currently listed |
||
Group 3 - Low priority candidates | ||
No candidates currently listed |
||
Lichens |
||
No candidates currently listed | ||
Mammals (marine) (1) |
||
Group 1 - High priority candidates | ||
Pusa hispida |
Ringed Seal |
NT, NU, Arctic Ocean |
Group 2 - Mid priority candidates | ||
No candidates currently listed |
||
Group 3 - Low priority candidates | ||
No candidates currently listed |
||
Mammals (terrestrial) (2) |
||
Group 1 - High priority candidates | ||
No candidates currently listed |
||
Group 2 - Mid priority candidates | ||
Puma concolor couguar |
Eastern Cougar |
ON, QC, NB, NS |
Group 3 - Low priority candidates | ||
Perognathus parvus |
Great Basin Pocket Mouse |
BC |
Molluscs (48) |
||
Group 1 - High priority candidates | ||
Allogona profunda |
Broadbanded Forestsnail |
ON |
Anguispira kochi |
Banded Globe (Eastern populations) |
ON |
Barnea truncata * |
Fallen Angel Wing, American Mud-piddock |
Atlantic Ocean |
Fisherola (Lanx) nuttalli |
Greater-Columbia River Limpet |
BC |
Helisoma corpulenta corpulenta |
Capacious Manitoba Ramshorn |
MB |
Inflectarius inflectus |
Shagreen snail |
ON |
Lasmigona costata |
Fluted Shell |
MB |
Mesodon clausus |
Yellow Goblet Snail |
ON |
Micromentus dilatatus |
Bugle Sprite |
NS |
Nearctula sp. (=Vertigo rowelli) |
Threaded Vertigo Snail |
BC |
Obliquaria reflexa |
Threehorn Wartyback |
ON |
Somatogyrus (Birgella) subglobosus |
Deep-water Spire Snail |
ON, QC |
Toxolasma parvus |
Lilliput |
ON |
Group 2 - Mid priority candidates | ||
Fluminicola fuscus |
Ashy Pebblesnail |
BC |
Leptodea ochracea |
Tidewater Mucket |
NB, NS |
Ligumia recta |
Black Sandshell |
SK, MB, ON, QC |
Margaritifera margaritifera |
Eastern Pearlshell |
QC, NB, NS, PE, NL |
Physella jennessi athearni |
Blunt Albino Physa |
AB |
Pisidium cruciatum |
Ornamented Pea Clam |
ON |
Quadrula pustulosa |
Pimpleback |
ON |
Stagnicola kennicotti |
Western Arctic Stagnicola |
NT |
Truncilla truncata |
Deertoe |
ON |
Utterbackia imbecillis |
Paper Pondshell |
ON |
Valvata sincera ontariensis |
Loosely-coiled Valve Snail |
ON |
Group 3 - Low priority candidates | ||
Alasmidonta undulata |
Triangle Floater |
ON, QC, NB, NS |
Anodonta implicata |
Alewife Floater |
QC, NB, NS |
Cyclonais tuberculata |
Purple Warty-back |
ON |
Elliptio crassidens |
Elephantear |
ON, QC |
Gastrocopta corticaria |
Bark Snaggletooth Snail |
ON, QC, NB |
Glyphyalinia luticola |
Furrowed Glyph Snail |
ON |
Guppya sterkii |
Brilliant Granule Snail |
ON |
Helisoma anceps royalense |
Lake Superior Ramshorn |
MB, ON |
Leptodea fragilis |
Fragile Papershell |
ON, QC |
Megapallifera mutabilis |
Changeable Mantleslug |
ON |
Physella columbiana |
Columbia River Physa |
BC |
Physella concolor |
Haldeman's Physa |
BC |
Physella hordacea |
Vancouver Island Physa (or Grain Physa) |
BC |
Physella latchfordi |
Latchford's Physa |
ON, QC |
Physella lordi |
Giant Western Physa |
BC, AB |
Physella nuttalli |
Nuttall's physa |
BC |
Physella parkari latchford |
Gatineau Tadpole Snail |
QC |
Pisidium insigne |
Tiny pea clam |
BC, AB, ON, PE |
Pomatiopsis lapidaria |
River-bank Looping Snail |
ON, QC |
Potamilus alatus |
Pink Heelsplitter |
MB, ON, QC |
Stagnicola montanensis |
Mountain spring stagnicola |
AB |
Stagnicola walkeriana |
Calabash Pond Snail |
ON |
Stagnicola woodruffi |
Coldwater Pond Snail |
ON |
Valvata perdepressa |
Purple Cap Valvata |
ON |
Mosses |
||
No candidates currently listed | ||
Reptiles (2) |
||
Group 1 - High priority candidates | ||
No candidates currently listed |
||
Group 2 - Mid priority candidates | ||
Opheodrys vernalis |
Smooth Greensnake |
SK, MB, ON, QC, NB, NS, PE |
Group 3 - Low priority candidates | ||
Chelonia mydas |
Green Turtle |
Pacific Ocean |
Vascular Plants |
An expanded Vascular Plants candidate list of over 800 vascular plants, grouped into two priority classes, is now available to the public in html or as an Excel worksheet file on the following link (Working List of Prioritized Vascular Plant Candidates). This list is provided with the understanding that it is a working copy undergoing modification. In preparing the list, information from the General Status of Species in Canada Review process, undertaken by all federal, provincial and territorial jurisdictions, is taken into account when species are ranked for inclusion on the list. |
|
Group 1 - High priority candidates | ||
Draba pycnosperma |
Dense Whitlow-grass |
QC, NS, NL |
Erigeron leibergii |
Leiberg's Fleabane |
BC |
Populus heterophylla |
Swamp Cottonwood |
ON |
Sida hermaphrodita * |
Virginia mallow |
ON |
Group 2 - Mid priority candidates | ||
No candidates currently listed |
||
Group 3 - Low priority candidates | ||
No candidates currently listed |
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Part 3: Rationales for candidate species appearing in the Fall 2006 Call for Bids to Prepare Species Status Reports.
This section provides rationales for COSEWIC's choice of candidate species for status report commissioning that are included in the Fall 2006 Call for Bids to Prepare Status Reports (October 20th - December 04th, 2006).
Rationales for the candidate species will be posted shortly.
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