Cheumatopsyche balaromta 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 : 117-120

Cheumatopsyche balaromta Oláh & Johanson , new species

Fig. 285–288

This species is close to C. mandrara and is distinguished by its convex anterior margins of segment IX, not straight with posterad directed dorsum. In addition, the phallotheca is constricted at mid-length, and the harpagones are thin and filiform almost along their whole length.

Male. Body and wings light brown with brown pubescence; wings with no spots or pattern. 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 brown with 7 similarly coloured warts. Proepisternum without swollen setal wart. Protarsal claws asymmetrical, laterally flanked by setal bundle. Each protibiae with 2 spurs. Forewing length 7.5 mm, hind wing length 5.2 mm. Forewing crossveins m-cu and cu tangental. Hind wing fork I present.

Male genitalia. Segment IX fused annularly, short; sternum about 2x longer than tergum ( Fig. 285); anterior margins of segment IX symmetrically convex; apical lobe on posterolateral margins short, nearly triangular, located above articulation cavity of coxopodites; spine row on posterior margins of segment IX interrupted at segment X; spines on dorsocaudal spiny lobe 2 times longer than spines on apical lobe. Intersegmental step between segment IX and segment X occupied by pair of setose protuberances. Segment X long, with dorsad, rounded, elongating apex ( Fig. 285); in dorsal view about parallel-sided along its length ( Fig. 286); ventrum nearly straight. Apicoventral setal lobes completely fused with, and dominating distal part of segment X. Setaless mesocaudal lobe reduced. Dorsal interlobular gap wide, shallow ( Fig. 286). Apicoventral setal lobes separated by dorsal interlobular gap, forming anterad curving, broad plates in dorsal view ( Fig. 286). Pair of setose areas forming dorsobasal protuberances on segment X ( Fig. 285, 286). Laterocaudal lobe visible in both lateral and dorsal view. Transverse sutures not visible. Longitudinal sutures running parallel with ventral margin of segment X ( Fig. 285). Lateral setose areas forming pair of elevated, rounded warts located immediately after mid-length of segment X. Coxopodites exceeding apex of segment X; basally narrow; dilating towards mid-length; distal half nearly parallel-sided ( Fig. 285); in ventral view basally broad ( Fig. 287); distal four-fifths nearly straight ( Fig. 287). Harpagones not broad at bases; narrowing quickly into long, slender processes, curving dorsad in lateral view ( Fig. 285); undulating in ventral view ( Fig. 287). Phallotheca ( Fig. 288) with slender phallobase, central part straight, slightly constricted at mid-length, slightly expanding ventrad before apex; dorsum nearly straight; sclerotised endothecal process circular; phallotremal sclerites broad and rounded in lateral view.

Holotype male: MADAGASCAR: Piste d’Ambalaromto a Anjahamanana, Del Brickville, ix.1954 [R. Paulian] ( MNHN, in alcohol).

Distribution: Madagascar.

Etymology: from the name of the type locality.