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Information about the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

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Family Eucharitidae

Another mystery orchard wasp - Pseudometagea schwarzii Wasp ID - Orasema Wasp ID - Orasema ID for a tiny wasp? - Orasema occidentalis small wasp - Pseudochalcura gibbosa - female Chalcid - Orasema occidentalis Chalcid wasp? - Orasema Orasema? - Orasema
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" (parasitic Apocrita))
Superfamily Chalcidoidea (Chalcid Wasps)
Family Eucharitidae
Numbers
35 spp. in 7 genera of 2 subfamilies in our area, >420 spp. in 55 genera worldwide placed in 3 subfamilies(1)
Size
2-5.4 mm(1)
Identification
They have punctate body, small head with large mandibles, bulging humpbacked thorax, a stalked abdomen attached low on the thorax.
Main diagnostic characters(1):
Prepectus lying in same plane as, and fused to, pronotum (95%)
Pronotum small and hidden by the head dorsally (100%)
Gaster usually relatively small with a very long petiole (98%)
Forewing with marginal vein moderately long, stigmal and postmarginal veins extremely short (100%)
Food
external parasitoids of the immature stages of ants(1)
Internet References
Catalog of World Eucharitidae by John Heraty, 2014