Colliuris pensylvanica

Long-necked Ground Beetle
Colliuris pensylvanica
Casnonia pensylvanica

Identification:

Long-necked Ground Beetle Colliuris pensylvanica came to moth lights June 28, 2014. Wheatley, Ontario.
Long-necked Ground Beetle Colliuris pensylvanica came to moth lights June 28, 2014. Wheatley, Ontario.

Head: Black, shiny, diamond-shaped with long neck.
Antenna: Black, reaching to end of thorax. Segments 1 to 3 reddish-yellow.
Thorax (Pronotum): Very long and narrow, black. Not as wide as head, but widens slightly at lower margin.
Wings (Elytra): Short with straight sides. Reddish-orange, shiny. Series of 3 large black spots across center of wings, sometimes touching. Tip of wings with wide black stripe.
Legs: Thin, yellowish-brown. Thighs (femora) have dark tips. Feet slightly darker.
Abdomen: Underside black. Female tip rounded, male tip with middle slightly indented.

Size: 6 to 8 mm.

Habitat: Forest edges, meadows, fields, marshes and ponds.

Food: Smaller insects.

Flight Time: June to early September

Life Cycle: Unknown. Attracted to lights.

Comments: Essex County – Point Pelee National Park and Lake Erie Islands. Kent County – Rondeau Provincial Park.

For information on synonyms, references and type specimens see next page