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Of the order Hymenoptera,
some wasp species are solitary, not forming colony groups.
Other species are known as social wasps, living in colonies complete
with a queen , sterile female workers and males (drones).
Social wasps of the Family Vespidae, including yellow
jackets, hornets and paper wasps, tend to be the most likely to
sting humans. Stinging behavior generally is a defensive action,
occurring when a colony or individual wasp is threatened.
In northern temperate
regions, new wasp colonies must be founded each year. Only
mated queens over winter and emerge in the spring to begin a new
colony.
A queen typically lays
10 to 20 eggs in the spring, placing each egg in a cell in the nest.
She is responsible for foraging for food and feeding the young until
the first sterile females emerge. They take over nest building
and rearing of the brood, while the queen narrows her duties to
egg laying.
By the end of the summer,
each nest may have multiple combs, as well as thousands of cells
and workers. Adult males and fertile females are produced
during late summer or early fall. After mating, the colonies
die off, and newly mated queens find a place to over winter.
The common yellow jacket,
which usually builds its nest below ground or in a protected aerial
location, produces large populations. Often up to 3,000 yellow
jacket workers are found in a single nest, and populations live
into late fall. Yellow jackets are typically about one-half-inch
long.
The European hornet,
also known as the brown or giant hornet, is the only true hornet
found in North America. Its brown body, which may be nearly
1 1/2 inches longs, is marked with orange. Hornets prefer
to build nests in hollow trees and logs but may be found in wall
voids and attics.
Paper wasps, also known
as umbrella wasps, often suspend their single-comb nests from the
eaves of houses, porch roofs or other horizontal surfaces.
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