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Photo#253746
Predaceous diving beetle - Dytiscus circumcinctus - female

Predaceous diving beetle - Dytiscus circumcinctus - Female
Edmonton, Alberta, Canada
May 8, 2008
I wondered if it was possible to get this one identified further than Dytiscus sp. (female).

This beetle just hit my windows
this looks almost exactly like the beetle that just hit my window. About 1.5 inches long and it buzzes about .5 seconds before trying to fly. The only difference I see is my beetle has a smooth back not ridged like your picture. Is this the same beetle or am i barking up wrong tree. I am in WA state.

 
Probably
Yes, this group of beetles is quite common and they do often hit cars.

The smooth back of yours indicates that yours was a male, compared to the ridges of my female pictured.

Most likely D. circumcinctus...
based on yellow patterning of the head (after viewing the image at full size to be sure); in this species, the inner margins of the eyes are bordered with yellow as with your specimen-separates from most other Dytiscus species in Alberta.

 
Size was about 31mm.
I do have a ventral shot if you still want it, will try to upload it soon.

Any ventral (underside) shots?
and size data? These will narrow things down considerably...nice find btw..

 
Dytiscus sp. or very closely related
a female

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