Three New Species of Ascocystis (Apicomplexa, Lecudinidae) From Mosquitoes

The following gregarines are described from mosquitoes in Taiwan: Ascocystis culicis (Ross) from Aedes aegypti (Linnaeus), Ascocystis taiwanensis sp. n. from Aedes albopictus (Skuse), Ascocystis lanyuensis sp. n. from Aedes alcasidi Huang, and Ascocystis armtgerei sp. n. from Armigeres subalbatus (Coquillett). the gamonts of all species are in the lumen of the midgut of the larvae, and the gametocysts and oocysts in the lumen of the Malpighian tubules of the pupae and adults. Ascocystis culicis matured only in Aedes aegypti and Aedes desmotes (Giles); Ascocystis taiwanensis only in Aedes albopictus and Aedes alcasidi; Ascocystis lanyuensis only in Aedes alcasidi; and Ascocystis armigerei only in Armigeres subalbatus and Aedes alcasidi.