Cheumatopsyche anonima 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 : 186-187

Cheumatopsyche anonima Oláh & Johanson , new species

Fig. 307–310

This species is recognized by having a combination of trilobed segment X; shortened apicoventral setose lobes; and a short, convex smooth mesocaudal lobe. The species is closely related to C. nathanbanksi Mey and C. longinosnavasi Mey from the Philippines. Cheumatopsyche anonima is easily distinguished from C. longinosnavasi by the straight harpagones; and from C. nathanbanksi by the more ventral position of preanal appendages, by the smaller and rounded apicoventral setose lobes, and by the convex dorsum of the phallotheca.

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

Wings. Forewing membranes evenly brown, with little darker veins. Crossveins m-cu and cu meeting in oblique line. Cu2 and A1 running separately before costa. Hind wing Sc and R meeting at crossvein s. Crossvein r located anteriorly of crossvein s. Fork 1 absent. Forewing length 6.5 mm.

Male genitalia. Abdominal segment IX fused annularly, tergum as long as sternum ( Fig. 307). Anterior margins of segment IX regularly bow-shaped, drawn slightly ventrally in lateral aspect ( Fig. 307). Apical lobe on posterolateral margins blunt right-angled; located immediately above less sclerotized articulation cavity of gonocoxites. Spine row on posterior margins of segment IX intermittent, heterogeneous. Spines on dorsolateral spiny lobes 2 times longer than spines on apical lobes; in dorsal view, dorsolateral spiny lobes fusing into continuous, rim-like plate, with tiny, mesoapical triangular process ( Fig. 308). Step between segments IX and X stepwise, shallow, sloping. Segment X short ( Fig. 307). Small step on dorsum present at mid-length, distal margin of mesocaudal smooth plate slightly curving dorsad. Segment X trilobed in dorsal aspect ( Fig. 308); dorsal, interlobular gap almost absent, filled by mesocaudal plate. Lateral sutures well developed; transverse; crossing segment X obliquely; orienting toward step corners. Both longitudinal sutures broad, forming continuation of apicoventral setose lobes; meeting transverse suture into Y. Smooth mesocaudal plate reduced, ending in triangular margin; slightly curving dorsad, forming rim in lateral view ( Fig. 307). Apicoventral setose lobes short, orienting posterad, rounded apically ( Fig. 307, 308). Lateral setose areas (superior or preanal appendages) forming small elevated warts located near ventral margin of segment X. Coxopodites exceeding apex of segment X, forming straight rod, dilating gradually towards apex ( Fig. 307); curving mesad in ventral view ( Fig. 309). Harpagones slender, filiform, nearly straight ( Fig. 307, 309). Phallotheca with short, shallowly broadening, ventrad curving basal part; horizontal part with convex dorsum; ventrum concave; producing slightly ventrad before apex. Endophallus long, running through entire phallotheca; ending in narrow tube at gonopore. Chitinized endothecal process cut distally; phallotremal sclerites vertically rounded in lateral view. Vestigial, membranous,ventral endothecal lobes present.

Holotype male: PHILIPPINES: Thru Miss Ludlow, Phil. I.

Distribution. Philippines.

Etymology. anonima , from anonymous, named after the limited label data available, i.e. no sampling date or locality name in the Philippines.