Katydid-parasite
Guides
Ormia brevicornis
Ormia brevicornis is a species of tachinid fly in the tribe Ormiini. It is a known parasitoid of katydids in the genus Neoconocephalus. The species was described by Townsend in 1919 and occurs in the United States. Two subspecies are recognized: O. b. brevicornis and O. b. nuttingi.
Ormia lineifrons
Ormia lineifrons is a multivoltine koinobiont endoparasitoid fly in the family Tachinidae. It is native to the Americas and has been studied extensively in Kentucky, USA, where it parasitizes four species of Neoconocephalus katydids in a sequential pattern across its three annual generations. The fly locates hosts by eavesdropping on male katydid mating calls, depositing first-instar larvae that develop internally and kill the host upon emergence. Its multi-species host use creates complex evolutionary dynamics with each host species exerting different selective pressures.
Sparasionidae
Sparasionidae is a family of parasitic wasps in the superfamily Platygastroidea. The family contains five extant genera—Sparasion, Mexon, Listron, Sceliomorpha, and Archaeoteleia—plus one extinct genus (Electroteleia) known from Eocene Baltic amber. The genus Sparasion is the most diverse with 141 valid species. All known species are egg parasitoids of orthopterans, specifically katydids (Tettigoniidae). The family exhibits a disjunct distribution, occurring in the Nearctic, Palearctic, Afrotropical, and Oriental regions but absent from the Neotropics and Australasia.