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Photo#747701
WaspIMG_4319 - Dolichovespula arctica - male

WaspIMG_4319 - Dolichovespula arctica - Male
Monhegan Island, Lincoln County, Maine, USA
August 22, 2011
I guessing Dolichovespula arctica or Vespula consobrina but I don't even know how to tell what sex it is.

Images of this individual: tag all
WaspIMG_4319 - Dolichovespula arctica - male WaspIMG_4319 - Dolichovespula arctica - male WaspIMG_4319 - Dolichovespula arctica - male

Moved

Moved
Moved from Blackjacket.

Moved

Male
The males of yellowjackets have longer, curved antennae, and an extra visible segment on the abdomen. This one is also Vespula consobrina.

 
ID Question
How is Dolichovespula arctica ruled out? I superimposed my image of its face onto the images for both species from the "Canadian Journal of Arthropod Identification" website here and here. The proportions seemed better for D. arctica. The malar space is mentioned as being a key so I looked at that in particular. I posted a similar example here ID'd as D. adulterina (before the split) and the malar space is mentioned there as well.

Thanks for the help!

 
Oops
I really should have checked on a monitor first. I thought there wasn't a pronotal carina (present in Dolichovespula but not Vespula), but it seems there might be one visible in the lateral view. The pronotal stripes often extend down the carina in Dolichovespula, making it more conspicuous, but this one doesn't. That malar space does look pretty long to be a Vespula. Do you happen to have any pics that show the dorsal pattern of the abdominal tergites, just to double check? Thanks, and sorry about the hasty identification.

 
Image Added
No problem on the ID. I should have given more info too. Hope the added image is what you need.

 
Yeah
The broken medial fasciae of the lower tergites peg this as D. arctica. This is a pretty melanic one.

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