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Photo#228914
Robber Fly - Laphria ventralis - male

Robber Fly - Laphria ventralis - Male
Port Angeles, WA, Clallam County, Washington, USA
September 21, 2008

Images of this individual: tag all
Robber Fly - Laphria ventralis - male Robber Fly - Laphria ventralis - male Robber Fly - Laphria ventralis - male Robber Fly - Laphria ventralis - male

Confirmed
ID confirmed ("probably") by
Dr. Robert A. Cannings, RPBio
Curator of Entomology
Royal British Columbia Museum
675 Belleville Street
Victoria, B.C., Canada V8W 9W2

Moved

Beautiful thing
And this appears to be a western relation of our group with sericea and aktis. It is neither of those. And I doubt there are many late September fliers in WA state either. It is not a Laphria sensu strictu. Will take some time to look at this one. Dr. Cannings may know it immediately. This is a male. Great shot of him.

 
Further study
And assuming this truly is in the sericea group means it is likely L. vultur or L. sackeni. I am not sure of the status of L. asackeni otherwise but it is closely related.

 
Laphria (Choerades) ventralis
I believe (a male). This sp. and L. vivax are very similar (especially in photos) but I think ventralis is more likely because: males with shorter genitalia; lateral margins of tergites are red beneath yellowish hair (hints of this in photo); sp. active later in summer - compared with vivax.

 
Addition
I added one more photo, a crop of the shot just before the one above. It had the abdomen in better focus, but the head out of focus.

 
Laphria (Choerades) ventralis
for sure. Thanks Stephen, this crop shot confirms identification.

 
Thanks
He was sitting on a big-leaf maple leaf, and it was windy, so only a few shots were in focus. It's not completely obvious from the shots I posted, but the abdomen is strikingly striped in yellow and black.

 
Yes
Can see the central dorsal abdominal dark spaces from the other shot. Which is why with the late season this should be distinctive to Dr. Cannings. Did you have an estimated length to add?

 
Length
I didn't get a chance to get a shot with a ruler, but that was a large maple leaf, so I'd guess 2 cm.