Chelate-foretarsi
Guides
Gonatopus
hump-backed pincer wasps
Gonatopus is a genus of solitary wasps in the family Dryinidae, commonly known as hump-backed pincer wasps. Females are wingless and possess enlarged, scissor-like foretarsi used to capture leafhopper hosts. The genus comprises ectoparasitoid species that develop on Auchenorrhyncha, primarily leafhoppers (Cicadellidae) and planthoppers (Delphacidae). Multiple species have been documented as biological control agents of agricultural pests, particularly rice plant hoppers in Asia and the glassy-winged sharpshooter in the Americas.