Entomology Collection TitleImage Bugs Pinned
Species Page - Dytiscus circumcinctus
browse search results ->Dytiscus circumcinctus ->species page

E-mail this Page   
Print this Page   
Link to this Page   

scientific name    Dytiscus circumcinctus    

Permanent and temporary ponds (Larson et al. 2000). Associated with aquatic macrophytes.

All teneral specimens from late July.

Large (27.5 to 34.0 mm), elongate body (Larson et al. 2000). Brown to black - some with green appearance. Ring of yellow around inner margin of eye. All pronotal margins bordered with yellow. Lateral margin of elytra yellow and narrowing to apex. Yellow or reddish ventral surface, expect thoracic sclerites margins narrowly brown-black and metasternum medially and metacoxa dark red. Pale abdominal sterna, with basal margins of first through third sterna narrowly brown-black. Yellow or yellow-reddish legs, brown-black dorsal surface of tibia.

life history
Overwinter as adults in permanent waters (Larson et al. 2000). Late fall or early spring mating. Univoltine (Aiken and Wilkinson 1985). Strong swimmers, hind legs move together while swimming. Adults attracted to lights.

No special status (IUCN 2002).

diet info
Predatory - active swimmers (Larson et al. 2000). Invertebrate and fish larvae prey. Larvae are predators of mayfly (Ephemeroptera) nymphs, isopods (Isopoda) and caddisflies (Trichoptera) (Johansson and Nilsson 1992).

Holarctic (Larson et al. 2000). This species is recorded from most of Alberta. This species ranges from Alaska to Maine, and as far south as Washington, Iowa and North Carolina. Also known from Great Britain to Kamchatka, records from peninsular Italy (Nardi and Maltzeff 2001).

quick link

Comments (0)Add New Comment

Comments are published according to our submission guidelines. The EH Strickland Entomological Museum does not necessarily endorse the views expressed.

Add New Comment (all fields are required)

Related Species Info
Display Hierarchy
References (5)
Specimen Info
There are 66 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (66)


Logo Department of Museums and Collections ServicesLogo University of Alberta