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Genus Leptochilus

Potter wasp? Anything more precise possible? - Leptochilus republicanus Wasp ID Request - Leptochilus republicanus - female Wasp - Leptochilus Eumenine - Leptochilus acolhuus Eumenine - Leptochilus acolhuus Some type of Eumeninae?  - Leptochilus republicanus Eumeninae - Leptochilus Eumeninae - Leptochilus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
Superfamily Vespoidea (Yellowjackets and Hornets, Paper Wasps; Potter, Mason and Pollen Wasps and allies)
Family Vespidae (Yellowjackets and Hornets, Paper Wasps; Potter, Mason and Pollen Wasps)
Subfamily Eumeninae (Potter and Mason Wasps)
Genus Leptochilus
For an online key to the two species occurring in the northeast see the Identification Atlas of the Vespidae of the northeastern Nearctic region. (1)
Print References
Bohart, R. H. (1955). Noth American Leptochilus of the trinodus group (Hymenoptera: Vespidae). Proc. Ent. Soc. Wash, 57(6):287-299. (Full Text)
Parker, F.D. (1966). A revision of the North American species in the genus Leptochilus (Hymenoptera: Eumenidae). Miscellaneous Publications of the Entomological Society of America, 5: 153–229.
Works Cited
1.Identification Atlas of the Vespidae (Hymenoptera, Aculeata) of the Northeastern Nearctic Region
Matthias Buck, Stephen A. Marshall, and David K. B. Cheung. 2008. Biological Survey of Canada [Canadian Journal of Arthropod Identification].