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COSEWIC Status Reports

  • COSEWIC Assessment and Status Report on the Atlantic Mud-piddock Barnea truncata in Canada (2022-01-27)
    The Atlantic Mud-piddock, Barnea truncata, is an intertidal bivalve mollusc belonging to the family Pholadidae. It is one of only two species of its family in Atlantic Canada. The shell is 3–5 cm long and well adapted to burrowing in firm substrates. Note: This COSEWIC assessment was received by the Minister on October 12, 2021.
  • COSEWIC assessment and status report on the Cobblestone Tiger Beetle (Cicindela marginipennis) in Canada (2022-01-24)
    Cobblestone Tiger Beetle (Cicindela marginipennis) is in the subfamily Cicindelinae, family Carabidae. Adults (11 – 14 mm long) are predatory and have large mandibles, elytra (i.e., the hardened front wings) with a narrow continuous cream-coloured border and a bright red-orange abdomen that is clearly visible during flight. No subspecies are described. Note: This COSEWIC assessment was received by the Minister on October 12, 2021.
  • COSEWIC Assessment and status report on the Ross’s Gull Rhodostethia rosea in Canada (2022-01-24)
    Ross’s Gull is a small Arctic gull with light, buoyant flight and quick, shallow wingbeats, characterized by a unique wedge-shaped tail. Breeding adults have a distinctive black collar, and the pale head and body feathers take on a light pink cast. Juvenile birds have black outer primaries and a broad black diagonal band across the inner wing. Note: This COSEWIC assessment was received by the Minister on October 12, 2021.
  • COSEWIC assessment and status report on the Seaside Centipede Lichen (Heterodermia sitchensis) in Canada (2022-01-24)
    Seaside Centipede Lichen, Heterodermia sitchensis Goward and Noble, is a pale greyish, leafy to semi-erect lichen in the Physciaceae. It can be recognized by the presence of marginal cilia and tiny urn-like structures near the lobe tips. It was first described from western Vancouver Island. Note: This COSEWIC assessment was received by the Minister on October 12, 2021.
  • COSEWIC assessment and status report on the Swift Fox (Vulpes velox) in Canada (2022-01-24)
    Swift Fox (Vulpes velox) is one of the smallest canids and one of the fastest mammals in North America, capable of reaching 60 km/h. It has an adult body length of 68–88 cm, a shoulder height of 30–32 cm and a body mass of 1.5–3.0 kg, with males being slightly larger than females. Pelage on the upper body is dark buffy-grey, with sides, legs, and beneath the tail orange-tan, and the undersides buff to pure white. Note: This COSEWI ...
  • COSEWIC Assessment and status report on the Tope Galeorhinus galeus in Canada (2022-01-24)
    Tope (Galeorhinus galeus), also commonly referred to as Soupfin Shark and Milandre in French, is one of 46 species belonging to the family Triakidae (the houndsharks) and is the only representative of this family on Canada’s Pacific coast. Note: This COSEWIC assessment was received by the Minister on October 12, 2021.
  • COSEWIC assessment and status report on the Western Silvery Aster (Symphyotrichum sericeum) in Canada (2022-01-24)
    Western Silvery Aster is an herbaceous perennial that produces 1-5 sparsely branched upright stems, 30 to 70 cm tall. Leaves have dense silky hairs that give the plant a silvery appearance. Leaves on the stem are lance-shaped, and those at the base of the stem are oblanceolate and wither by the time of flowering. Flowers are arranged in an open, branched array of up to five daisy-like heads. Ray florets are typically rose-purple. Note: This ...
  • COSEWIC assessment and status report on the White Shark (Carcharodon carcharias) Atlantic population in Canada (2022-01-24)
    White Shark (Carcharodon carcharias (Linnaeus, 1758)) is the only species of this genus. In French it is called grand requin blanc. Genetic evidence combined with satellite tracking information clearly shows that this species is wide-ranging in the Pacific and Atlantic oceans. Gene flow among populations across ocean basins is restricted based on high site fidelity and reproductive philopatry of females (returning to same spawning site). There is ...
  • COSEWIC assessment and status report on the Common Five-lined Skink (Plestiodon fasciatus) Carolinian population, Great Lakes/St. Lawrence population in Canada (2022-01-19)
    Common Five-lined Skink is a secretive, diurnally active, semi-fossorial (burrowing), small lizard that reaches a maximum body size (snout-vent length) of approximately 86 mm. Juveniles have five light-coloured stripes on their black body and prominently display the species’ most characteristic feature, a bright blue tail. Colouration fades with age in both sexes, although females retain more of the original colour pattern. In the breeding season ...
  • COSEWIC assessment and status report on the Eastern Hog-nosed Snake (Heterodon platirhinos) in Canada (2022-01-19)
    Eastern Hog-nosed Snake is a large, stout-bodied, egg-laying snake. Its common name is derived from the upturned scale at the tip of its snout, a feature unique to hog-nosed snakes. Individuals are highly variable in colour and pattern, ranging from colourful and blotched to melanistic (very dark). When approached, this snake may flare its neck, similar to a cobra, hiss, mock strike, gape its mouth, release a strong-smelling musk, roll onto its b ...
  • COSEWIC assessment and status report on the Grappletail (Octogomphus specularis) in Canada (2022-01-19)
    Grappletail (Octogomphus specularis) is a slender dragonfly, 51 to 53 mm long. The top and sides of the thorax are yellow or pale green with a broad black stripe between them. The abdomen is black with a fine pale stripe on the top and between the abdominal segments. In males, the abdomen widens posteriorly and has two distinctive, yellow, eight-branched appendages (cerci) at the tip. Note: This COSEWIC assessment was received by the Minister ...
  • COSEWIC assessment and status report on the Lake Chubsucker (Erimyzon sucetta) in Canada (2022-01-19)
    Lake Chubsucker (Erimyzon sucetta) is a member of the sucker family (Catostomidae), with an average total length of 200 mm in Canada. The species is one of 13 sucker species known from the Great Lakes basin and the only member of the Erimyzon genus in Canada. There is a single Lake Chubsucker designatable unit in Canada. Note: This COSEWIC assessment was received by the Minister on October 12, 2021.
  • COSEWIC Assessment and Status Report on the Lakeside Daisy Tetraneuris herbacea in Canada (2022-01-19)
    Lakeside Daisy (Tetraneuris herbacea) is a rhizomatous, colonial perennial in the Aster Family. In early spring it produces single, yellow, daisy-shaped heads of flowers, each borne on a hairy stalk. It is a globally significant Great Lakes endemic with a narrowly confined distribution. Note: This COSEWIC assessment was received by the Minister on October 12, 2021.
  • COSEWIC Assessment and status report on the Purple Wartyback Cyclonaias tuberculate in Canada (2022-01-19)
    Purple Wartyback is a medium-sized freshwater mussel reaching a maximum adult size of approximately 200 mm in Canada. The exterior of the shell is covered in many pustules (raised bumps) which are concentrated on the posterior portion of the shell and extend up onto the beak. The interior of the shell (nacre) is purple in most specimens with heavy serrated pseudocardinal teeth and complete lateral teeth. The species is not sexually dimorphic. No ...
  • COSEWIC Assessment and Status Report on the Short-eared Owl Asio flammeus in Canada (2022-01-19)
    Short-eared Owl (Asio flammeus) is a medium-sized owl, approximately 34-42 cm in length. Plumage is mottled brown above and buff with heavy streaking below, varying only slightly by sex and age. Short-eared Owl is largely crepuscular and hunts through the evening and into the night, and is recognizable by its agile, moth-like flight over open areas. Note: This COSEWIC assessment was received by the Minister on October 12, 2021.

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