Helicopsyche (Feropsyche) succincta Johanson & Holzenthal, 2004, new species
Creators: name: Johanson, Kjell Arne
name: Holzenthal, Ralph W.
Publisher: name: Zenodo
Year: 2004
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Helicopsychidae
Helicopsyche
Helicopsyche succincta

description: 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.
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.
description: Published as part of Johanson, Kjell Arne & Holzenthal, Ralph W., 2004, Thirteen new species and new distribution records of Helicopsyche (Feropsyche) Johanson from Venezuela (Trichoptera: Helicopsychidae), pp. 1-40 in Zootaxa 711 on pages 7-9, DOI: 10.5281/zenodo.169460