Potamyia ifanadiana, Olah & Barnard, 2006

Oláh, J. & Johanson, K. A., 2008, Generic review of Hydropsychinae, with description of Schmidopsyche, new genus, 3 new genus clusters, 8 new species groups, 4 new species clades, 12 new species clusters and 62 new species from the Oriental and Afrotropical regions (Trichoptera: Hydropsychidae), Zootaxa 1802, pp. 1-248 : 229

Potamyia ifanadiana species group

This group contains the largest-sized species of the genus. AlI are dark pigmented, more or less fuscous, unlike the other groups which are yellow or yellowish-brown in colour. The antennae are also very long, up to twice length of forewing. Ninth abdominal segment robust and very rounded anterolaterad, dorsum reduced, apical lobe on posteriolateral margin weIl developed with broad base and rounded apically. Basal segment of clasper very robust and straight with dilated base. Tenth tergum small compared to ninth segment, elongated horizontally with weakly developed hook formation; setose warts elevated and situated near middle of tergum. The species ifanadiana , tofina , andoba, karafa, andria and korasha comprise this group; all are rectricted to Madagascar ( Oláh et al. 2006b)