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Calendar
BugGuide Gathering
Pack Forest
Washington State
July 10-12, 2009
Details...

Photos from the 2008 gathering in Tennessee
 
Photos from the 2007 gathering in Minnesota

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Species Vespula maculifrons - Eastern Yellowjacket

Worker Yellow Jackets-same species? - Vespula maculifrons Queen - Vespula maculifrons Eastern Yellowjacket Queen - Vespula maculifrons - female Eastern Yellowjacket - Queen - Vespula maculifrons - female Is this  Vespula flavopilosa? - Eastern Yellowjacket -  - Vespula maculifrons - female V. maculifrons nest - Vespula maculifrons V. maculifrons queen - Vespula maculifrons - female V. maculifrons queen on nest - Vespula maculifrons - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Bees, Ants, and other Stinging Wasps)
Superfamily Vespoidea
Family Vespidae (Yellowjackets, Paper Wasps, and Hornets; Potter, Mason and Pollen Wasps)
Subfamily Vespinae (Hornets and Yellowjackets)
Genus Vespula
Species maculifrons (Eastern Yellowjacket)
Size
12-16 mm
Identification
Workers about 7/16" long, males 1/2", and queens 11/16". Workers and males do not have free spots on the abdomen. The upper black marking (nearest the thorax) is triangular with a narrow "neck" of black extending to the upper edge of the abdomen. Queens have free black spots but lack the distinctive diamond-shaped black marking of V. germanica.
Range
The Eastern yellowjacket is one of the most abundant yellowjackets in the U.S. east of the Plains states.
Habitat
Meadows and edges of forested land, usually nesting in ground or at ground level in stumps and fallen logs.
Food
Adults eat nectar, larva pre-chewed insects captured from adults.
Life Cycle
In spring, mated female (queen) constructs a small nest and daily brings food to larvae until first brood matures and females serve as workers, extending the nest and tending young. In late summer males develop from unfertilized eggs and mate. When cold weather begins, all die except mated females which overwinter among litter and in soil. (1)
Remarks
Warning Workers will sting repeatedly if they perceive you as a threat to their nest, otherwise, they are less aggressive

This very yellow (xanthic) male wasp has proved difficuilt to ID to species:

It is either an Eastern or Yellow-Haired Vespula flavopilosa
See Also
Similar to the Western Yellowjacket, V. pennsylvanica, however the first antennal segment of V. maculifrons is all black. (1)
Print References
"Peterson's Field Guide to Insects" plate 16, p.348 (2)
"National Audubon Society Field Guide to North American Insects & Spiders" plate 486, p.836 (1)
Internet References
The Insects of Cedar Creek, Minnesota has photos of pinned specimens and information.
Forestry Images has a great shot of a nest.
University of Florida's Featured Creatures has a lot of info on Vespula species, including a color pattern chart to identify between worker, queen, or male.
the website eNature has a complete article with photos and info.
Works Cited
1.National Audubon Society Field Guide to Insects and Spiders
By Lorus and Margery Milne
2.A Field Guide to Insects
By Richard E. White, Donald J. Borror, Roger Tory Peterson
3.Identification Atlas of the Vespidae (Hymenoptera, Aculeata) of the Northeastern Nearctic Region
By Matthias Buck, Stephen A. Marshall, and David K. B. Cheung