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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Parasitica" - Parasitoid Wasps » Chalcidoid Wasps (Chalcidoidea) » Eulophidae » Tetrastichinae
Photo#503761
Wasp - female
Copyright © 2011 R. Berg

Wasp - Female
Alameda County, California, USA
April 6, 2011
Size: 1.3 mm bl
The leaf was kept in an unheated room at about the same temperature as outdoors but always above freezing. I left for Yosemite on April 3 and returned on April 6 to find this wasp in the container. The wasp was only walking, not flying, which suggests that it had emerged considerably earlier.

Images of this individual: tag all
Structure on oak leaf - Dryocosmus dubiosus Brown gall on oak leaf - Dryocosmus dubiosus Wasp - female Wasp - female Empty gall with exit hole - Dryocosmus dubiosus
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Contributed by R. Berg on 7 April, 2011 - 8:06pm
Last updated 21 February, 2018 - 1:09pm

Moved
Moved from Eulophidae.
… Bob Zuparko, 21 February, 2018 - 1:09pm login or register to post comments

This belongs to the subfamily ...
... Tetrastichinae.

This may or may not be a hyperparasitoid of the gallmaker.
… Bob Zuparko, 21 February, 2018 - 1:09pm login or register to post comments

Moved. Hyperparasitism, then?
Moved the two adult images from Two-horned Gall Wasp but left all images linked. Is this acceptable?
… R. Berg, 7 April, 2011 - 11:12pm login or register to post comments

 
You bet...
There are eulophid hyperparasitoids as well - many attack primary parasitoids such as braconids that attack aphids. Hard to be sure in this particular case.
… Ross Hill, 8 April, 2011 - 12:15am login or register to post comments

 
Well, that explains it
I had thought the wasp was too small for a gall that size.
… R. Berg, 8 April, 2011 - 12:41am login or register to post comments

Chalcid: Eulophid…
This is not Dryocosmus. You can compare images here. The dark metallic coloration, shortened antennae, subtriangular prepectus, and axilla that extend past the tegula seem to indicate a eulophid female. Many attack cynipid wasps inside their galls.

See reference here.
… Ross Hill, 7 April, 2011 - 10:46pm login or register to post comments

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