Hydropsyche kamenga Oláh & Schefter, 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 : 60-61

Hydropsyche kamenga Oláh & Schefter , new species

Fig. 84–88

This species is similar to H. atlas Malicky & Chantaramongkol from Nepal. Hydropsyche kamenga is separated from H. atlas by the presence of an apicoventral setose lobe on segment X that is slender along its length, not broad at basis as in H. atlas . The apicodorsal setose lobe is lower than the median keel of segment IX, not higher as in H. atlas . The membranous lobes and spine structure of the endotheca are different; the bilobed apical membranous process lacks apical spines; and the blunt large terminal surface is echinate.

Male. Body and wings brown; forewing membrane brown with pale maculation. Sternum V with short, broad lobe. Maxillary palp formula I-II-(III, IV)-V, segment V as long as segments I–IV together. Dorsum of head dark brown; with 9 setal dark brown setal warts. Swollen setal wart present on proepisternum. Pretarsal claw asymmetrical, laterally flanked by setal bundle. Spur formula 244. Protibia with posteroapical spur as long as anteroapical spur.

Wings. Venation typical for the genus. Forewing crossveins m-cu and cu separate. Sc and R, and Cu2 and A separating before costa. Hind wing Sc and R meeting before costa about at crossvein r. Stem of M and Cu1 running closely. Median cell closed. Fork 1 present. Forewing length 9.3 mm. Hind wing length unknown.

Male genitalia. Abdominal segment IX fused annularly, very short ( Fig. 84); median keel triangular, dorsally and laterally granulose; apex tapering in dorsal view ( Fig. 85); anterior margin forming arc; dorsum with keel shifted posterad. Antecosta well developed, forming single line narrowing dorsally before margin; with external groove of antecostal suture. Apical lobe on posterolateral margin hyperboloid. Posterior spine row complete, continuous to posterior slope of median keel. Depression between segments IX and X acutely Ushaped. Body of segment X short ( Fig. 84); nearly quadrangular in lateral view; rounded quadrangular in dorsal view ( Fig. 85). Lateral setose areas(preanal appendages) forming 2 ventral areas; compact on paler background; additional distal setal area present before margin in lateral view, with diffuse, loosely packed group of setae. Apicoventral setose lobe modified into pair of digitiform, slender, processes; ventrad curving in lateral view ( Fig. 84); slightly curving laterally in dorsal view ( Fig. 85); setae present on dorsal surface. Dorsal, interlobular gap demarcated by apicoventral processes and complex of apicodorsal setose lobes on anterior basis of gap. Apicodorsal setose lobe triangular, elongated vertically, slightly lower than median keel in lateral view ( Fig. 84); hearth-shaped in dorsal view ( Fig. 85); two-partite in lateral view, with small posterior setose hump; dorsal anterior tip smooth. Smooth cavity on segment X present. Transverse sutures short, darkly pigmented, running ventrad from anterior part of intersegmental depression. Longitudinal sutures encircling ventral part of smooth cavity. Coxopodites long, broad, dorsal margins slightly sinuous at base, slightly dilating distally from mid-length ( Fig. 84); nearly straight in ventral view ( Fig. 86). Harpagones each with very broad basal plate, distal part slender; slightly curving ventrad in lateral view; almost straight in ventral view ( Fig. 86). Phallic apparatus ( Fig. 87, 88) simply bent; widening along downwardly curving basal part. Endotheca ending distally in broad, apical, membranous processes with weakly separated, bilobed, blunt echinate apex; without sclerotized spines. Terminal half of endotheca with 3 pairs short, stout spines located dorsolaterally on short lobes ( Fig. 87). Basal half of endotheca with 2 pairs large spines ( Fig. 87, 88), largest spine pair hooked apically; smaller spine pair without dorsad oriented hook. Small dorsal lobe superimposed to lower complex, housing endophallus of narrow tube; terminates in two-partite sclerite complex around phallotreme.

Holotype male: INDIA: Assam, Kameng, Amatulla , 11.iii.1961 [F. Schmid] ( ROM, pinned with cleared abdomen in plastic genital vial).

Distribution. India (Assam).

Etymology. kamenga , named after the type locality, Kameng.