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assectator or kirbii

gasteruptiid wasp - Gasteruption - female wasp? - Gasteruption Braconid? - Gasteruption - female Gasteruptid Wasp - Gasteruption - female Slender Wasp maybe Gasteruptiidae  - Gasteruption - female Gasteruption Small gasteruptiid wasp taking nectar from a Yellow avens flower - Gasteruption - female Genus Gasteruption - Gasteruption - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" - Parasitoid Wasps)
Superfamily Evanioidea (Aulacid, Ensign, and Gasteruptiid Wasps)
Family Gasteruptiidae (Carrot Wasps)
Genus Gasteruption
No Taxon assectator or kirbii
Identification
There are 3 spp. with a short ovipositor in NA:
G. amputatum (so. AZ & Mexico) females have ovipositor tip (the distal 1/10) white
G. kirbii and G. assectator (both coast to coast) have ovipositor entirely black and are hard to separate by pictures (no diagnostic color characters; the amount of orange on the metasoma varies in both)

G. kirbii: frons and lateral lobes of the mesonotum somewhat shiny, with dense, fine punctures; metatarsomere 2 about 2.2 times as long as wide in the male and about 1.6 in the female; antennomere 4 about 2.0 times as long as wide
G. assectator: frons and lateral lobes of the mesonotum matte and with fine indistinct scattered punctures; metatarsomere 2 about 3.7 as long as wide in the male and about 3.0 as long as wide in the female; antennomere 4 about 2.6 as long as wide.
[Sources: D.R. Smith, pers. comm. to H.P., 2.vii.2010; and (1)]
Works Cited
1.The Nearctic species of Gasteruptionidae (Hymenoptera)
Townes H. 1950. Proc. U.S. Nat. Mus. 100(3259): 85-145.