Cheumatopsyche ranoma 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 : 222

Cheumatopsyche ranoma Oláh & Johanson , new species

Fig. 371–374

This species is unique in the Cheumatopsyche mahakaya species group, easily separated by the absence of fork 1 in the hind wings; and in the genitalia by the presence of well-developed, dorsad curving, apicoventral setose lobes; and the shortened and stout harpagones.

Male. Body and wings brown, with brown pubescence. Maxilary palp formula I-(III, IV)-II-V, segment V as long as sum of segments I–IV. Head dorsum brown, with brown setal warts. Swollen setal wart absent on proepisternum. Pretarsal claws apparently symmetrical, without laterally flanked setal bundle. Protibiae with 2 apical spurs, posteroapical spur small.

Wings. Forewing Cu2 and A1 separate before costa. Wing membranes unicoloured brown without pattern. Forewing length 6.0 mm.

Male genitalia. Abdominal segment IX fused annularly; tergum shorter than sternum ( Fig. 371); anterior margins of segment IX almost regularly bow-shaped, with middle section straight and more strongly drawn, with posteriorly shifting dorsal section in lateral aspect ( Fig. 371). Apical lobe on posterolateral margins nearly triangular, located above wide articulation cavity of gonocoxites. Spine row on posterior margins of segment IX almost complete; not intermittent, except short space below dorsal margin ( Fig. 371); spines heterogenous, 3 times longer on laterocaudal protuberances of dorsum; short, stiff, straight on apical lobes. Intersegmental step between segments IX and X filled, occupied by pair of setose protuberances; forming setose laterocaudal lobes. Body of segment X long, nearly triangular, with highly dorsad curving, blunt, apex in lateral aspect ( Fig. 371); simple, bilobed in dorsal aspect ( Fig. 372); ventrum slightly bellied. Upturning apicoventral lobes fusing with segment X; dominating distal part of segment X; delineated by setae; rounded in lateral view ( Fig. 371); apex turning anterad in dorsal view ( Fig. 372). Smooth, mesal lobes reduced; dorsal interlobular gap narrow, triangular, deep ( Fig. 372). Apex of fused apicoventral setal lobes separated by dorsal, interlobular gap with shape dependent on observation angle. Setose element present on basal, dorsolateral area of segment X; forming pair of well-developed protuberances, representing laterocaudal lobes. Transverse sutures short. Longitudinal sutures running along bottom of segment; forming continuation of apicoventral setose lobes. Setose areas (superior or preanal appendages) forming pair of elevated, circular flap-like warts located centrally on segment. Coxopodites exceeding apex of segment X, very slender immediately after basis, abruptly broadening to slightly posterad curvingdistal part before mid-length ( Fig. 371); widening distad in ventral view ( Fig. 373). Harpagones sharply triangular in lateral view ( Fig. 371); curving slightly mesad in ventral view ( Fig. 373). Phallothecal phallobase enlarged ( Fig. 374); straight horizontal shaft tapering apically; slightly constricting before apex; with ventral broadening. Endophallus broadening at basis; ending in short tube at gonopore. Chitinesed endothecal process larg and circular. Phallotremmal sclerites vertically broad in lateral aspect.

Holotype male: MADAGASCAR: Fianarantsoa Province, 7 km W Ranomafana , 1100 m, black light, mountain rainforest, 22–31.x.1988 [W.E. Steiner] - ( NMNH, pinned).

Distribution. Madagascar.

Etymology. ranoma , name derived from the type locality, Ranomafana.