Asilidae, Assassin Robber Fly

Egg-laying takes place, according to the species, with three different behaviors which relate to the structure and the morphology of the abdomen. Females with an undifferentiated ovipositor release eggs randomly and independently from the substrate. In other cases, however, the abdomen bears a differentiates, specialized ovipositor to lay eggs in the soil or sand, or lay them in cavities within plant tissues.
Habitat and ecology
The Causse du Larzac is a limestone karst plateau, a habitat typical of those favoured by many species of Asilidae