Cheumatopsyche concava (G Ulmer, 1930)

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 : 225

Cheumatopsyche concava species group

Species group of monolobed segment X with almost fused ventroapical lobe. All the processes or lobes on segment X are fused, except the small wart-like, more or less elevated lateral setose surface area. The setose ventroapcial lobe regularly fused to the apical margin of segment X and delineated only by its setose surface. As a result both the dorsal and lateral interlobular gaps disapperaed. Wartlike lateral setose area, the vestigium of preanal appendages located centrally on segment X. Spiny ventroapical lobe on segment IX present or absent. Distributed in South and Souteast Asia, including the Southeast Asian archipelago ( Oláh et al. 2008).