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Species Vespula pensylvanica - Western Yellowjacket

unknown yellow jacket... - Vespula pensylvanica Western Yellowjacket munching on unknown larva - Vespula pensylvanica - female western yellowjacket - Vespula pensylvanica - female Western Yellow Jacket, Various stages from larvae to adult - Vespula pensylvanica Western Yellowjacket, Nectaring - Vespula pensylvanica - female Vespula pensylvanica Prairie Yellowjacket - Vespula pensylvanica Black Crowned Wasp - Vespula pensylvanica - female
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 Vespinae (Hornets and Yellowjackets)
Genus Vespula
Species pensylvanica (Western Yellowjacket)
Explanation of Names
Vespula pensylvanica (de Saussure 1857)
Forewing: workers 8.5–10.5 mm, ♀ 12.5–14.5 mm, ♂ 12.5–14.0 mm(1)
w NA (BC-CA to MB-WI-TX) to Mexico; adventive in ON, HI(1)
Life Cycle
Nest entrance • Nest • Prepupae, pupae and adults
Print References
Internet References
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].
2.The Vespinae of North America (Vespidae, Hymenoptera)
L.S. Kimsey and J.M. Carpenter. 2012. Journal of Hymenoptera Research Vol. 28: 37–65.