Cheumatopsyche joariva 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 : 122-125

Cheumatopsyche joariva Oláh & Johanson , new species

Fig. 297–300

This species is similar to C. ambala , from which it is separated on the apex of segment X which is not curving anterad or rounded. In addition, the coxopodites are broader along their lengths, and the apical lobes of segment IX are more strongly produced posterad; the harpagones narrow gradually in ventral view, while in C. ambala , the harpagones narrow abruptly at mid-length. The phallobase of C. joariva is more weakly curving

and narrower than in C. ambala . This species is also large and dark. The protarsal claws are symmetrical, but with a lateral setal bundle present. The forewing crossveins m-cu and cu are not touching.

Male. Body and wings brown with brown pubescence; wings with no spots or pattern. Maxillary palp segment I shortest, segment II longer, segments III and IV equally long, length of segment V as long as sum of segments I–IV. Head dorsum brown with 12 similarly coloured warts. Antennae about 1.5 times longer than forewings. Proepisternum without swollen setal wart. Protarsal claws symmetrical, lateral setal bundle present. Each protibiae with 2 spurs. Forewing length 12.0 mm, hind wing length 9.0 mm. Forewing crossveins m-cu located distally of cu by a distance equal to half length of crossvein m-cu. Hind wing fork I present.

Male genitalia. Abdominal segment IX fused annularly, generally short ( Fig. 297); sternum longer than tergum ( Fig. 297); anterior margins of segment IX straight at mid-height; dorsal sections acute ( Fig. 297); apical lobe on posterolateral margins long, semicircular, located above articulation cavity of coxopodites; spine row on posterior margins of segment IX complete; irregularly bent spines on dorsocaudal lobes twice as long as straight spines on apical lobes. Intersegmental step between segment IX and segment X occupied by pair of setose protuberances ( Fig. 297, 298). Segment X long with blunt apex; oriented dorsad ( Fig. 297); simple, tongue-shaped in dorsal view ( Fig. 298); ventral margin nearly straight. Apicoventral setal lobes completely fused with segment X, except at apices. Setaless mesocaudal lobe reduced. Dorsal interlobular gap narrow, tri- angular ( Fig. 298). Pair of small setose protuberances lobes located near anterior margin of segment X ( Fig. 297, 298). Transverse sutures not visible. Longitudinal sutures located ventrally on segment X, nearly parallel with ventral margin ( Fig. 297). Setose areas forming pair of elevated, vertically elongated warts located at distal half of segment X. Coxopodites exceeding apex of segment X ( Fig. 297); broad at bases, followed by more slender part below both tips of apical lobe of segment IX, gradually broadening to apices; almost straight in lateral and ventral view ( Fig. 297, 299). Harpagones with short, broad base, continuing into long, dorsad curving, thin, digitate branches ( Fig. 297); in ventral view ( Fig. 299) nearly straight, except curving mesad near apices. Phallothecal phallobase large ( Fig. 300); straight horizontal shaft slightly tapering; sclerotised endothecal process circular, half as wide as shaft; phallotremal sclerites broad, rounded in lateral view.

Holotype male: MADAGASCAR: Tsinjoarivo , x.1953 [R. Paulian] ( MNHN, in alcohol).

Paratypes: MADAGASCAR: Est de Sambava , Reserve nat. XII. Marojejy-Masiaposa, ii.1959 [P. Soga] — 3 males, 3 females ( MNHN, in alcohol), 1 male ( OPC, in alcohol) .

Distribution: Madagascar.

Etymology: from the name of the type locality.