Quedius caseyi caseyi    

Ground dwelling in a variety of forest floor debris and along edges of swampy pools (Smetana, 1973).

Specimens in the Strickland Museum collected from mid June to late August.

Colouration ranges from reddish black to black, with the head comparatively darker and pronotum paler than remainder of body (Smetana, 1971). Eyes appear large with temples extending the entire length of eyes when observed from above (Smetana, 1971). First setiferous puncture is located midway between the back of head and the rear margin of the eye, with a second puncture positioned closer to the rear margin of the eye (Smetana, 1971). The head and pronotum possess similar microsculpture, with the pronotum being curved at the base and not noticeably narrowed at front (Smetana, 1971). Elytra is comparatively short and dilated posteriorly with sides being equivalent to length of pronotum at midline (Smetana, 1971). In males, aedoeagus broad and curved forming small rounded tip; paramere broad with distinct v-shaped notch at tip.

life history
Like other species of this genus, Quedius caseyi caseyi is documented as an effective indicator species of old-growth forest (Pohl et al., in press).


diet info
Little known however sometimes collected in dung (Hatch, 1957).

Predominantly found throughout the north-western region of North America ranging from California to southern British Columbia and into Manitoba (Smetana, 1971), however specimens have also been collected in the Northwest Territories (Smetana, 1973) and Ontario (Smetana, 1976). Within Alberta the species has been collected as far north as Peace River, and as far south as Cypress hills.

species page authorPyper, M.2006 

quick link


Logo Department of Museums and Collections ServicesLogo University of Alberta