 The horsehair worm "Paragordius varius" is an internal parasite and can control the behaviour of its cricket host and cause it to enter water, where the parasite continues its lifecycle and the cricket likely drowns.The larvae of the sarcophagid fly "Sarcophaga kellyi" develop inside the body cavity of field crickets.Female parasitic wasps of "Rhopalosoma" lay their eggs on crickets, and their developing larvae gradually devour their hosts.