Common European Scorpionfly

Panorpa communis can reach a body length of about 30 millimetres (1.2 in). The common scorpionfly has a black and yellow body, with a reddish head and tail. The male has a pair of claspers at the end of its tail (for holding the female during mating), giving it a scorpion-like appearance, although it is not a stinger. The adult insect has a wingspan of about 35 millimetres (1.4 in), with wings that are mostly clear, but have many dark spots or patches. Its head, mounted with large eyes, is drawn into a prominent, downward pointing beak, which opens at the tip of its head. Females are longer, heavier, and have longer legs than males. In the female, the eighth abdominal segment is the shortest, almost twice shorter than the seventh; the sixth is narrowed towards the back. The larva resembles a caterpillar and grows up to 20 millimetres (0.79 in) long. It has three pairs of thoracic legs and eight pairs of prolegs.

This species is native to Europe (except Iceland and Ireland) and Northern Asia (except China).

Males release pheromones and offer nuptial gifts to females in the form of saliva secretions and nuptial prey (usually dead arthropods). Before offering the nuptial gifts, the male and female, perform ritualized premating behavior, which includes slow wing movements, accompanied by brief sequences of rapid vibrations from their abdomen. The mating success of females increases with the size of nuptial gifts offered by the male.