Cheumatopsyche usumbara, Oláh & Johanson, 2008

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 : 211

Cheumatopsyche columnata species group

Species group of bilobed segment X with dorsal interlobular gap very narrow and shallow leading to an almost complete fusion of lobes into a monolobed segment X, like at C. contexta (Ulmer) and C. camena Malicky. Apical lobe on the posterolateral margin of segment IX not very developed. Second segment of inferior appendages usually short and excised in more species. One African species, C. usumbara new species has a ventrocaudal spiny lobe known only at Oriental species, although the spines are not as strong. Distributed in Oriental and Afrotropical biogeographic region, including Madagascar ( Oláh et al. 2008).