About Dolichovespula norwegica (Fabricius, 1781)
Description and identification: The Norwegian wasp, Dolichovespula norwegica, has distinct black and yellow color patterns across its body. On its face, it has a long malar space, which is divided by a vertical black bar. The sides of its thorax bear small, outward-projecting black hairs, and the rear of the thorax has clear yellow spots. Red coloring can often be seen on the front of the abdomen. The genus name Dolichovespula comes from the Greek word dolichos, which means long; this name matches the species' physical characteristics. Individuals of this species typically measure 11–18 mm in total length. Queens are generally around 17 mm long, while workers are smaller at around 13 mm; for comparison, adults of the related species D. maculata range from 20–30 mm in length. Distribution and habitat: Norwegian wasps usually build their nests on tree branches or in bushes, and often choose sheltered rather than open areas, such as moors. Despite its common name referencing Norway, D. norwegica is also found throughout England, Ireland, and is common in Scotland. The species' nests have a coarse woven texture with only a few holes, which impairs their thermoregulation. Nests are also less durable, so they must be constructed in protected locations.
