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Dytiscid... - Agabus

Dytiscid... - Agabus
Enumclaw, King County, Washington, USA
April 17, 2015
Size: ~ 8.3 mm
Found this Dytiscid airborne. Maybe a Agabus griseipennis? Confirmation/correction, and further placement would be appreciated.

Images of this individual: tag all
Dytiscid... - Agabus Dytiscid... - Agabus


This is either [i]A. griseipe
This is either A. griseipennis or A. lutosus. The males of both species are very similar externally and can only be reliably distinguished by genitalia. However based on geographical location (as is supported by both literature and my collecting experience), I'm leaning towards A. lutosus- this species is most common in the coastal areas. A. griseipennis is more of a montane/continental species. My collection records for A. griseipennis were from Alberta while my A. lutosus specimens were collected in the Vancouver area.

Thank you Tim....
As always appreciate your assistance.

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