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TaxonomyBrowse
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Species Crossocerus nitidiventris

Square-headed Wasp - Crossocerus nitidiventris - female Wasp - metacrabro? - Crossocerus nitidiventris - female Wasp IMG_1799 - Crossocerus nitidiventris - male Crabronidae Crossocerus nitidiventris - Crossocerus nitidiventris Crabronidae Crossocerus nitidiventris  - Crossocerus nitidiventris Crabronidae Crossocerus nitidiventris  - Crossocerus nitidiventris Family Crabronidae Crossocerus nitidiventris - Crossocerus nitidiventris - female Family Crabronidae Crossocerus nitidiventris  - Crossocerus nitidiventris - female
Classification
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)
No Taxon (Apoid Wasps (Apoidea)- traditional Sphecidae)
Family Crabronidae
Subfamily Crabroninae (Square-headed Wasps)
Tribe Crabronini
Subtribe Crabronina
Genus Crossocerus
No Taxon (Subgenus Blepharipus)
Species nitidiventris (Crossocerus nitidiventris)
Synonyms and other taxonomic changes
Crabro nitidiventris Fox, 1892. Ent. News 3:9
Explanation of Names
Epithet nitidiventris from Latin: nitidi- = shining, handsome; ventris = underside, belly...as in "venter". (1)
Size
11 - 12 mm
Identification
It is an unusual species in its genus because of the yellow markings on the abdomen (only present in one other species). What makes this this wasp distinctive is: yellow spots on smooth area of propodeum, yellow prepectus (that's the area just behind the pronotal lobe), rounded pronotal angles (excludes many other crabronines with similar markings), and yellow spots of similar size on terga 2-5.
Range
Quebec & Ontario, south to Georgia and west to Minnesota and Texas (2)
Food
Larvae provisioned by females with flies. Recorded prey species includes Nephrotoma virescens, a tipulid.
Adults take nectar at flowers.
Print References
Fox, W. J. (1895). The Crabroninae of Boreal America. Transactions of the American Entomological Society 22:129-226. (Full Text)
Leclercq, Jean (2000). Hyménoptères Sphécides Crabroniens des Amériques du genre Crossocerus Lepeletier & Brullé, 1835(3). Notes fauniques de Gembloux, n°40, pp. 3-75 (Full Text)
Works Cited
1.Dictionary of Word Roots and Combining Forms
Donald J. Borror. 1960. Mayfield Publishing Company.
2.Catalog of Hymenoptera in America North of Mexico
Karl V. Krombein, Paul D. Hurd, Jr., David R. Smith, and B. D. Burks. 1979. Smithsonian Institution Press.
3.Hyménoptères Sphécides Crabroniens des Amériques du genre Crossocerus Lepeletier & Brullé, 1835.
Leclercq, Jean. 2000. Notes fauniques de Gembloux, n°40, pp. 3-75.