yellow-orange larva? - Pemphredon

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Ants, Bees and Stinging Wasps » Apoidea sans Anthophila – Apoid Wasps » Square-headed Wasps, Sand Wasps, and Allies (Crabronidae) » Pemphredoninae » Pemphredonini » Pemphredonina » Pemphredon

Photo#1938666

Copyright © 2021 Nick Wiser

yellow-orange larva? - Pemphredon

Eugene, Lane County, Oregon, USA
February 6, 2021
Size: ~9mm

Size it just a visual estimate that was not made with any measuring device, but it should be fairly accurate.

One of several yellow to carrot colored larvae found inside of a thick tree branch that I split open. There were several in little tubes all long the length of the branch. The yellow one seemed softer, and the orange one a little harder, but I didn't really try to squeeze it. I was wondering if these were actually pupae, or about to become pupae. The larvae haven't moved at all, which is what brought me to the conclusion that they are either pupae or about to become them.

I have a chunk of the wood in a container, so anything that comes out I will be able to examine, though I don't know how long that may take.

Images of this individual: tag all

yellow-orange larva? - Pemphredon - male

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Contributed by Nick Wiser on 7 February, 2021 - 11:04pm
Last updated 16 March, 2021 - 1:25am

Moved

Moved from ID Request.

Nice job!

… Bob Biagi, 16 March, 2021 - 1:25am

Thanks

for ID'ing this, Bob. I had never heard of aphid wasps until now, and am glad to be introduced to them.

… John van der Linden, 16 March, 2021 - 1:07pm

Hymenoptera

Bee or wasp larvae. Some species will nest in tunnels in wood left behind by wood-boring beetles. Good luck with the rearing -- I'll be interested to see if you are able to get any adults out of this.

… John van der Linden, 8 February, 2021 - 2:35pm

Successfully reared

Despite coming millimeters from accidentally losing the pupa down the sink drain earlier in the month, the adult emerged today.

… Nick Wiser, 15 March, 2021 - 10:48pm

Excellent

BugGuide needs more images of Hymenoptera immatures, I think, especially when the immatures are reared to adulthood and the adult images are contributed too -- something you've done quite nicely here. I was glad to see that you received some input about a possible ID, too, in the comments under one of the adult images. If you move this series to Hymenoptera, you may be able to attract the attention of other BugGuide contributors who focus on this order of insects, increasing your chances of narrowing down the ID possibilities.

… John van der Linden, 15 March, 2021 - 11:44pm

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