A new subgenus of Ceraclea Stephens 1829 : Ranaivodes n. subg., endemic to Madagascar, with description of four new species (Trichoptera : Leptoceridae)

Ranaivodes, new subgenus of Ceraclea, is described from Madagascar. It is closely related to the South Saharan endemic subgenus Pseudoleptocerus Ulmer. Ranaivodes is characterized by the presence of the harpago and the absence of the phallic parameres. Pseudoleptocerus is characterized by the presence of scales on the wings and two pairs of parameres at the phallic apparatus. Four new species are described: Ceraclea (Ranaivodes) sartorii n. sp., Ceraclea (Ranaivodes) higleri n. sp., Ceraclea (Ranaivodes) ifarantsae n. sp. and Ceraclea (Ranaivodes) jonathani n. sp. Homilia grandis Mosely, described from Madagascar, is transferred from the genus Homilia to the genus Ceraclea and to the subgenus Ranaivodes comb. nov. This new subgenus is endemic of the Island and includes all the known Malagasy species of Ceraclea. The geographic distributions of the species are studied and analyzed according to ecological parameters