Cheumatopsyche bohakayi Oláh & Johanson, 2008

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 : 41-42

Cheumatopsyche bohakayi Oláh & Johanson , new species

Fig. 109–112

The shortened lobes on segment X and the deeply stepped intersegmental depression, as well as the extremely short tergum of segment IX of this unique species from high altitudes on Madagascar, indicate that it belongs to the C. expeditionis species group. However its long harpagones and enlarged phallobase separate it from all other known species.

Male. Body and wings brown with brown pubescence. Maxillary palp segment I shortest, segment II longer, segments III and IV equally long, segment V as long as sum of segments I–IV. Head dorsum darker brown, with 7, only slightly lighter warts. Proepisternum without swollen setal wart. Protarsal claws asymmetrical laterally flanked by setal bundle. Two spurs present on each protibia. Forewing length 6.0 mm, hind wing length 5.0 mm. Distance between forewing crossveins m-cu and cu slightly longer than length of cross- vein m-cu. Hind wing fork I absent.

Male genitalia. Segment IX fused annularly; tergum very short, sternum slightly longer than tergum ( Fig. 109); anterior margins of segment IX setalessly curved in lateral view, tergal parts less excised than sternal parts; apical lobe on posterolateral margins sharply triangular, located imediately above base of coxopodites; spine row along posterior margins of segment IX interrupted between apical lobe and apicolateral corner of tergum IX. Intersegmental step between segment IX and segment X very deep ( Fig. 109). Segment X short, nearly triangular in lateral view, quadrangular in dorsal view, clearly trilobed in dorsal view ( Fig. 110). Transverse sutureS crossing segment X at mid-length of segment X ( Fig. 109). Setaless mesocaudal lobe forming short broad plate ( Fig. 110). Apicoventral setal lobes slightly curving dorsad, with rounded apices in lateral and dorsal view ( Fig. 109, 110). Pair of lateral setose areas forming short elevated warts, located beyond transverse sutures at base of apicoventral setal lobes. Coxopodites extending about as far as apex of segment X, nearly straight, with dilated apices ( Fig. 109). Harpagones forming long digitate processes about as long as coxopodites, curving dorsad in lateral view ( Fig. 109). Phallotheca ( Fig. 111) with concave dorsum and convex ventral margin before apex; phallobase very broad, especially in ventral view ( Fig. 112); sclerotised endothecal process elongate, basally narrow; phallotremal sclerites forming broad plate in lateral view.

Holotype male: MADAGASCAR, Andringitra , Soanindrano 2070 m, 15.i.1958, ( MNHN, in alcohol).

Distribution: Madagascar.

Etymology: “ bohakayi ” in Sanscrit, meaning big second joint, referring to the long harpago of the inferior appendages.