Potamyia trenhona, J Olah & PC 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 trenhona species group

Pate coloured, small-sized species. Ninth abdominal segment truncate dorsoanteriorly producing a reduced dorsum, rounded anteriad or rather straight; apical lobe on posteriolateral margin almost absent. Basal segment of clasper slightly bent or geniculate. Tenth tergum produced into upward or backward curving hooked formations with very broad bases. Setose warts situated apically. Ventral subapical keel on phallotheca long or well developed. The species arachne, chaos, daphne , hoenei , jinhongensis, phaidra, siveci, trenhona , and yunnanica comprise this group, which is known from south China, Vietnam, Sumatra and India ( Oláh et al. 2006b).