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Genus Parancistrocerus

5015170 wasp - Parancistrocerus pedestris Parancistrocerus perennis Vespid Wasp - Parancistrocerus pedestris - female Mason Wasp - Parancistrocerus - female Mystery mason wasps 2 - Parancistrocerus fulvipes Euodynerus Wasp - Parancistrocerus perennis Mason Wasp - Parancistrocerus perennis Small wasp - Parancistrocerus fulvipes
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)
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 Parancistrocerus
Synonyms and other taxonomic changes
Parancistrocerus Bequaert, 1925
Numbers
Nearctica (1) lists 25 species.
Identification
For an online key to the nine species occurring in the northeast see the Identification Atlas of the Vespidae of the northeastern Nearctic region. (2)

Unlike the similiar Stenodynerus, Parancistrocerus often carries mites at the base of the second segment of the metasoma, as seen here:
  

See Also
Works Cited
1.Nearctica: Nomina Insecta Nearctica
2.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].
3.Ancistroceroides de Saussure, a Potter Wasp Genus New for the United States, with a New Key to the Genera of Eumeninae N. of Mex
Carpenter, James M. . 2004. Journal of the Kansas Entomological Society 77(4): 721-741.