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Photo#1551428
Tiny wasp

Tiny wasp
Las Cienagas, Cochise County, Arizona, USA
July 4, 2018
Size: about 1 mm
in a wetlands area, on Huachuca water umbel flower

Images of this individual: tag all
Tiny wasp Tiny wasp Tiny wasp

Moved
Moved from Cynipoidea.

Based on the incision at the tip of the forewings ...
... I believe this is a member of the subfamily Eucoilinae (family Figitidae), so it is a fly parasitoid, not a gall wasp.

Moved
Moved from Diapriidae.

Cynipoidea
Cynipoidea

Cynipoidea…
Gall formers.

See reference here.

 
Could you tell me how to diff
Could you tell me how to differentiate between Diapriidae and Cynipoidea? I am a beginner at these tiny wasps. On the Hymenopterists Forum, one expert thought Diapriidae, and one thought Cynipoidea. It would be very helpful to get the ID, because I believe that these photos represent some of the few documented visitors to the tiny, endangered Huachuca water umbel.

 
Sure…
Diapriids are small or minute and black, and are often confused with cynipids. They have elbowed antenna inserted on a frontal prominence, the metasoma is distinctly petiolate, and the forewing lacks a stigma (it's "open"), but sometimes only has a slightly thickened marginal vein. Cynipids do not have elbowed antennae, or a frontal prominence, or the same wing venation.

 
Thanks! You are a wonderful r
Thanks! You are a wonderful resource!

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