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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Bees, Ants, and Stinging Wasps » Apoid Wasps (Apoidea)- traditional Sphecidae » Crabronidae » Bembicinae » Sand Wasps (Bembicini) » Spheciina » Cicada Killers (Sphecius) » Western Cicada Killer (Sphecius grandis)
Photo#196389
Our western Cicada killers are brown - Sphecius grandis - male
Copyright © 2008 margarethe brummermann

Our western Cicada killers are brown - Sphecius grandis - Male
Picture Rocks, NW of Tucson, Pima County, Arizona, USA
June 30, 2008
Size: more than 1 in
Eric confirmed this one as S. convallis, he has collected them here, too

Images of this individual: tag all
Another cicada killer? - Sphecius grandis Our western Cicada killers are brown - Sphecius grandis - male
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Contributed by margarethe brummermann on 1 July, 2008 - 8:40pm
Last updated 18 August, 2010 - 7:43am

ID by Chuck Holliday
who writes: Thanks for posting the great pix of two Picture Rocks species of CK on Bug
Guide.

Your pic of the CK perching on the end of a stem (see attached) is of a
Sphecius grandis male (the pic is so sharp that I can count the segments of
the antennae!). S. convallis never have yellow on the end of the abdomen
(gaster), as does the one in your photo
… margarethe brummermann, 18 October, 2008 - 11:09pm login or register to post comments

Moved
Moved from Pacific Cicada Killer.
… margarethe brummermann, 18 October, 2008 - 11:07pm login or register to post comments

Probably.
Actually, it was the 'other' specimen that I can confirm is S. convallis. This one is likely to be, but we have S. grandis, too, and the two can look almost identical. Separation is based on punctation of the first abdominal tergite, which differs between the two species. No way you can see that in these images; no way anybody is going to try it with live specimens:-)
… Eric R. Eaton, 2 July, 2008 - 5:27pm login or register to post comments

 
Ok I'll switch them
Do the males sting? looks like these could
… margarethe brummermann, 2 July, 2008 - 5:45pm login or register to post comments

 
Confused
Eric says that he can't confirm the species and you say that he did. Is it truly convallis?
… Beatriz Moisset, 4 July, 2008 - 9:49am login or register to post comments

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