Thirteen new species and new distribution records of Helicopsyche (Feropsyche) Johanson from Venezuela (Trichoptera: Helicopsychidae) Author Johanson, Kjell Arne Author Holzenthal, Ralph W. text Zootaxa 2004 711 1 40 journal article 10.5281/zenodo.169460 c6b6aaea-4e91-4f23-b4bd-c80a4f676e13 1175­5326 169460 5403C332-6597-48D3-BD4D-7AD6D4CDC2CA Helicopsyche ( Feropsyche ) succincta , new species Fig. 15–21 , 89 This new species is very similar to H . flinti from which it can be distinguished by the absence of a single strong process on the posteroventral margin of the gonocoxite, and the less prominent basimesal lobes. It can be separated from other similar species, e.g., H . grenadensis , H . molesta , and H . valligera , by the anteriorly oriented, but slightly pointed anterior lobe of segment IX. FIGURES 15–21. Helicopsyche succincta , new species , holotype. 15—sternum VI process, lateral; 16—sternum VI process, ventral; 17—male genitalia, lateral; 18—male genitalia, dorsal; 19— male genitalia, ventral; 20—phallus, lateral; 21—phallus, ventral. Male. Head: Antennal scape about as long as eye diameter. Maxillary palp segments equally long, each segment nearly as long as eye diameter. Cephalic warts rounded, convex, about 1/2 as long as eye diameter, with golden brown setae. Forewing golden brown, length 3.9–4.1 mm . Sternum VI process ( Fig. 15, 16 ) nearly 1/2 its segment length, covered by microtrichiae on proximal half; nearly straight in lateral view ( Fig. 15 ), oriented posteroventrally; tubular along its length, except wider at apex; apex bearing minute spines ( Fig. 16 ). Male genitalia ( Fig. 17–21 ). Segment IX, in lateral view ( Fig. 17 ), with anterior lobe hyperboloid, oriented anteriad, present midlaterally; anterodorsal margin nearly straight; anteroventral margin slightly concave; in dorsal view ( Fig. 18 ), with inner margin hyperboloid; in ventral view ( Fig. 19 ), without posterior process; lateral apodeme present as anteriorly oriented undulate line ( Fig. 17 ), fading before reaching anterior margin; submarginal line present; tergal transverse apodeme apparently absent; sternal transverse apodeme absent. Segment X, in lateral view ( Fig. 17 ), oriented posteroventrad, nearly straight along its length; dorsally nearly straight; tapering along its length, apex narrowly rounded; in dorsal view, ( Fig. 18 ), slightly narrowing apically, apex strongly notched; with about 7 pairs of about equally long megasetae in group starting at distal half. Superior appendage ( Fig. 17 ) club­shaped, oriented posteriorly. Primary branch of gonocoxite, in lateral view ( Fig. 17 ), with proximal half about equally broad, strongly widening at distal half, with undulate dorsal margin; apex produced and curving medially; central part of primary branch slightly narrower than height of central part of tergum X ( Fig. 17 ); anterodorsal margin nearly straight, smooth; posteroventral margin weakly undulate; basimesal lobe small, apically rounded in lateral view ( Fig. 17 ), rounded in ventral view ( Fig. 19 ), with nearly straight, parallel median margins; with 4 weak megasetae on dorsal margin; basal plate, in lateral view ( Fig. 17 ), nearly straight, narrow anteriorly; in ventral view ( Fig. 19 ), sharply triangular, apex narrowly rounded. Phallus, in lateral view ( Fig. 20 ), with anterior half nearly straight, smoothly bent ventrad at midlength, dorsal margin undulating; ventral margin angled; anterior 1/4 about 1.5X broader than its central part ( Fig. 20 ); in ventral view ( Fig. 21 ), phallobase absent; endotheca weakly produced; sperm channel divided into long, thick posterior and slender anterior parts; posteroventral part strongly sclerotized. Holotype male: VENEZUELA : T.F.A. [Territorio Federal Amazonas = Estado Amazonas]: Camp XII, 1950 m , near Pico Phelps, 26.ii.1985 , W.E. Steiner, W. Buck, B. Boom, C. Brewer ( NMNH , pinned). Paratype : same data as holotype , except Camp X, 1690 m , 0°54'N , 60°2'W [sic! is possibly 0°54'N , 66°02'W ], 13.ii.1985 , W.E. Steiner — 1 male ( NMNH , pinned). Distribution. Venezuela (Amazonas). Etymology. The name succincta , from the Latin succinctus , means short, and refers to the short basimesal process of the gonocoxite. The name is to be treated as a noun in apposition.