Southern Yellowjacket (Vespula squamosa)

This yellowjacket has been a thorn (sting?) in the side of people who live in warmer climates, because its colonies can survive the winter and grow to become massive. Monster yellowjacket nests that have been discovered in states like Florida and Georgia are most likely built by V. squamosa.

Appearance:

The Southern Yellowjacket can be distinguished from other yellowjackets in the southern U.S. by two long, yellow stripes on the thorax. Its stout body is about 5/8 inch long, which is larger than average for most yellowjackets. The Southern Yellowjacket queen is distinguished by an orange abdomen with very few black bands.

Habits:

Southern Yellowjackets will scavenge for protein, are attracted to meats and sugary foods, and therefore can be pests around trash cans and picnics. In warm climates, some Southern Yellowjacket colonies can overwinter, lasting longer than a year. This species is considered a social parasite to other yellowjackets, usually taking over Eastern Yellowjacket nests.

Nests:

Southern Yellowjacket nests are likely to be found in urban and suburban areas, such as yards, parks and roadsides. Most nests are subterranean, but Southern Yellowjacket nests have been reported in aerial locations and house wall voids. Peak population usually ranges between 500 and 4000 workers. Entire colonies -- not just the queen -- can overwinter in warmer climates.

Nature toward humans:

Colonies are typically large, so disturbing nests can result in swarming. Since nests are usually found in urban and recreational areas, there is a greater risk of stings and surprise encounters.

Other Yellowjacket species

Paper Wasps

Hornets