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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Pseudodynerus quadrisectus

Monobia quadridens look alike - Pseudodynerus quadrisectus Mason Wasp - Pseudodynerus quadrisectus Mason Wasp - Pseudodynerus quadrisectus Wasp gathering mud - Pseudodynerus quadrisectus black,white and purple winged wasp? - Pseudodynerus quadrisectus Pseudodynerus quadrisectus variability? #2 - Pseudodynerus quadrisectus Wasp - Pseudodynerus quadrisectus Wasp - Pseudodynerus quadrisectus
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 Pseudodynerus
Species quadrisectus (Pseudodynerus quadrisectus)
Synonyms and other taxonomic changes
Pseudodynerus quadrisectus (Say, 1837)
circa 15 mm length; forewing 12-16 mm (female), 10-13 mm (male)
Note two white bands on abdomen, very short petiole between thorax and abdomen, not long, as in Eumenes.
Eastern United States: New Jersey south to Florida; west to Ohio, eastern Kansas, Oklahoma, Texas. Subspecies aztecus is found in Mexico, south to Costa Rica.
deciduous forests, etc.
June-September (North Carolina)
Found on taking nectar from flowers.
Life Cycle
Nests in borings made in wood, preys on caterpillars.
See Also
Mason wasp, Monobia quadridens--larger, with only one white band on abdomen, near base
Print References
Brimley, p. 440--lists for North Carolina as Ancistrocerus quadrisectus (1)
Eaton and Kaufman, pp. 358-359 (2)
Bequaert, Joseph, 1941. Pseudodynerus, a neotropical complex of eumenine wasps (Hymenoptera, Vespidae). American Museum novitates ; 1106 (PDF)
Internet References
Identification Atlas of the Vespidae (Hymenoptera, Aculeata) of the northeastern Nearctic region--Pseudodynerus quadrisectus (3)
Works Cited
1.Insects of North Carolina
C.S. Brimley. 1938. North Carolina Department of Agriculture.
2.Kaufman Field Guide to Insects of North America
Eric Eaton, Kenn Kaufman. 2006. Houghton Mifflin.
3.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].