Cheumatopsyche columnata, Martynov, 1935

Oláh, János, Johanson, Kjell Arne & Barnard, Peter C., 2008, Revision of the Oriental and Afrotropical species of Cheumatopsyche Wallengren (Hydropsychidae, Trichoptera), Zootaxa 1738, pp. 1-171 : 92

10. Cheumatopsyche columnata species group

Species of this species group have a bilobed segment X with a very narrow and shallow dorsal interlobular gap leading to an almost complete fusion of the lobes into a united segment X ( Fig. 10), as in C. contexta (Ulmer) and C. camena Malicky. The apical lobe on the posterolateral margins of segment IX are not strongly developed; the harpagones are usually short and excised. One African species, C. usambara , new species has a ventrocaudal spiny lobe otherwise known only in Oriental species, although the spines are not as strong. The group is distributed in the Oriental and Afrotropical regions, including Madagascar.