University of Alberta Museums Search

Large (29.7 to 40.0mm), broadly elongate (Larson et al. 2000). Black - some with green appearance. Basal antennal segments yellow, darker and reddish terminal segments. All pronotal margins bordered with yellow. Females with reddish or brown-black striae and black ridges. Reddish yellow or reddish ventral surface, except red metacoxa, medially brown-black metasternum, and black anterior and posterior margins of abdominal sterna. Brown-black or black sternal basolateral maculation - progressively smaller to posterior. Yellow or reddish legs.

Holarctic (Larson et al. 2000). This species is recorded from most of Alberta. Wide distribution through Boreal zones and Western Cordillera. Aleutian Islands, Alaska to Newfoundland, as far south as California and Arizona. Found at sea level in northern parts of range to increasingly higher elevations in southern part of range. One record from northwestern China; records from Soviet Union, east of Lake Baikal.