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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Symphyta" - Sawflies, Horntails, and Wood Wasps » Stem Sawflies (Cephidae) » Cephini » Calameuta » Calameuta clavata
Photo#796425
Yellow and Black Wasp - Calameuta clavata
Copyright © 2013 Tamra F

Yellow and Black Wasp - Calameuta clavata
Big Mountain Pass, Morgan County, Utah, USA
June 30, 2013
A Braconid of some kind?

Images of this individual: tag all
Yellow and Black Wasp - Calameuta clavata Yellow and Black Wasp - Calameuta clavata
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Contributed by Tamra F on 1 July, 2013 - 9:24pm
Last updated 8 July, 2013 - 8:20pm

Moved
Moved from Cephus or Calameuta.
… John F. Carr, 8 July, 2013 - 8:20pm login or register to post comments

Cephidae
Calameuta clavata (Norton). I compared specimens and am quite sure this is clavata. Color of the abdomen (yellow markings) and apparently long cerci place it as clavata. The yellow on the wings is the same in both clavata and cinctus. Calameuta has a bidentate left mandible, distance between antennae and clypeus long, and long cerci; Cephus has a tridentate left mandible, distance between antennae and clypeus short, and very short cerci. These are always difficult to see in photos.
… Dave Smith, 8 July, 2013 - 8:18pm login or register to post comments

 
Hind tibia
In all the photos I looked at of Calameuta clavata, the hind tibiae are darkened throughout, while with Cephus cinctus, they all appear to be yellowish, with dark coloration only near the tarsi. I presume it is not that simple, but wanted to make the observation.
… Jay Keller, 24 June, 2017 - 9:05pm login or register to post comments

 
Dave,
thank you so much for sharing your time and knowledge. I really appreciate it!
… Tamra F, 8 July, 2013 - 8:30pm login or register to post comments

Moved
Moved from Stem Sawflies.
… John F. Carr, 4 July, 2013 - 4:42pm login or register to post comments

Cephidae
Cephus cinctus or Calameuta clavata. Can't be sure from the pictures.
… Dave Smith, 4 July, 2013 - 7:14am login or register to post comments

 
Thank you,
Dave. I wondered if the yellow band on the leading edge of the front wing might be diagnostic, but can't tell from the pics in the guide if the Cephus cinctus has it? I do have a few additional angles if anything would be helpful. Hard to know sometimes what will be the best images to post.
… Tamra F, 4 July, 2013 - 7:43am login or register to post comments

Moved
Moved from ID Request.
… v belov, 1 July, 2013 - 10:36pm login or register to post comments

Stem Sawfly…
See reference here.
… Ross Hill, 1 July, 2013 - 9:47pm login or register to post comments

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