Cheumatopsyche nondra 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 : 202-204

Cheumatopsyche nondra Oláh & Johanson , new species

Fig. 337–340

This small brown animal with light-patched forewings is similar to C. sambava Oláh & Johanson form the Sambava National Park on Madagascar. Cheumatopsyche nondra is separated by the more produced, and in lateral view triangular, mesocaudal smooth plate of segment X. It is also characteristic in having two-partite segment X with elevated, large basal half less sclerotized, and lower distal half strongly sclerotized. The harpagones are broad, not as slender as in C. sambava ; and the phallotheca is not conspicuously constricted at mid-length.

Male. Body brown, with lighter pubescence. Maxillary palp formula I-(III, IV)-II-V, segment V as long as sum of segments I–IV. Head dorsum brown, with 9 brown setal warts. Swollen setal wart absent on proepisternum. Setal surface present on precoxale. Pretarsal claw asymmetrical, laterally flanked by setal bundle. Mid- and hind-leg claws asymmetrical.

Wings. Forewing brown with slightly darker veins and light maculation. Two large patches of white setae visible in radial cell and Dc around crossveins r and s, and on fork 1. Large patch present in anal cell below apical section of A1. Forewing crossveins m-cu and cu situated closely. Cu2 and A1 running separately before costa. Hind wing Sc and R meeting basad of crossvein r. Crossvein s situated slightly apically of crossvein r. Fork 1 absent. Forewing length 6.0 mm.

Male genitalia. Abdominal segment IX fused annularly, tergum only a little shorter than sternum ( Fig. 337). Anterior margins of segment IX regularly bow-shaped, dorsally flat in lateral aspect ( Fig. 337). Apical lobe on posterolateral margins blunt right-angled; located well above less sclerotized articulation cavity of gonocoxite ( Fig. 337). Spine row on posterior margin of segment IX continuous and heterogeneous. Spines on dorsolateral spiny lobes 2 times longer than spines on apical lobes; in dorsal view dorsolateral spiny lobes protruding triangular ( Fig. 338). Intersegmental step between segments IX and X pronounced, deep, right angled. Segment X medium sized, triangular in lateral view ( Fig. 337); basal part less sclerotized; clearly bilobed in dorsal aspect; smooth, sclerotized, mesocaudal plate convex at distal margin in dorsal view ( Fig. 338); protruding triangular in lateral view ( Fig. 337). Dorsal interlobular gap wide, deep, nearly quadrangular. Transverse sutures crossing obliquely on both sides of segment X, slightly posteriorly of less sclerotized, basal area. Longitudinal sutures each well pronounced, forming continuation of apicoventral setose lobes, fusing with transverse suture into Y. Smooth mesocaudal plate well developed, sclerotized; sharply triangular in lateral view ( Fig. 337). Apicoventral setose lobes long, slightly constricting subapically; apex clavate, curving obliquely dorsad in lateral view ( Fig. 337); orienting slightly mesad in dorsal view ( Fig. 338). Lateral setose areas (superior or preanal appendages) forming small, elevated, circular warts, located apically on segment X, at basis of apicoventral setose lobes. Coxopodites exceeding apex of segment X, forming ventrad curving rod ( Fig. 337); slightly dilating apically, dorsal margin undulating; bent mesad at distal two-thirds it length ( Fig. 339). Harpagones with broad basis, narrowing apically ( Fig. 337); slightly curving dorsad; nearly straight in ventral view ( Fig. 339). Phallotheca ( Fig. 340) with convex dorsum and concave ventrum. Phallothecal apex broadening ventrad into capitate configuration in lateral view. Endophallus long, running through and filling entire phallotheca; ending in narrow tube at gonopore. Chitinized endothecal process long, ovoid. Phallotremal sclerites narrow, vertical. Vestigial, membranous, ventral endothecal lobes weakly developed.

Holotype male: MADAGASCAR: Suarez Province , Nossi Be, Bemanondroke, 20.iii.1963 [E.D. Cashatt] - ( NMNH, pinned).

338 — genitalia, dorsal; 339 — gonocoxite, ventral; 340 — phallus, lateral.

Distribution. Madagascar.

Etymology. nondra , derived from the name of the type locality, Bemanondroke.