Helicopsyche (Feropsyche) neblinensis, Johanson, Kjell Arne & Holzenthal, Ralph W., 2004

Johanson, Kjell Arne & Holzenthal, Ralph W., 2004, Thirteen new species and new distribution records of Helicopsyche (Feropsyche) Johanson from Venezuela (Trichoptera: Helicopsychidae), Zootaxa 711, pp. 1-40 : 15-17

Helicopsyche (Feropsyche) neblinensis , new species

Fig. 41–47 , 88

Together with H. lara , new species, H. neblinensis has a rounded, triangular gonocoxite, the form being unique for the American Helicopsyche . Helicopsyche neblinensis can be separated from H. lara , in dorsal view, by the slightly more slender tergum X having only five pairs of dorsal setae, and in lateral view, by the slightly wider gonocoxite.

Male. Head: Antennal scape about as long as eye diameter. Maxillary palp segments equally long, each segment slightly shorter than eye diameter. Cephalic warts oval, slightly convex, with golden brown and grey setae. Forewing golden brown­grey, length 3.1–3.5 mm. Sternum VI process ( Fig. 41, 42 ) nearly 2/5 its segment length, covered by microtrichiae; in lateral view ( Fig. 41 ), slightly curving posteriorly and tapering before apex, oriented posteriorly; distally parallel­sided in ventral view ( Fig. 42 ); apex bearing minute ventral lamellae and spines ( Fig. 42 ).

Male genitalia ( Fig. 43–47 ). Segment IX, in lateral view ( Fig. 43 ), with anterior lobe hyperboloid, oriented anteriad, present ventrolaterally; anterodorsal and anteroventral margins shallowly concave; in dorsal view ( Fig. 44 ), with inner margin widely ellipsoid; in ventral view, ( Fig. 45 ) without posterior process; lateral apodeme present as anterodorsally oriented, nearly straight line ( Fig. 43 ) nearly reaching anterior margin; sub­marginal line present; tergal transverse apodeme absent; sternal transverse apodeme absent. Segment X, in lateral view ( Fig. 43 ), oriented posteroventrad, nearly straight; strongly tapering along its length, apex slightly pointed and curving ventrally; in dorsal view ( Fig. 44 ), slightly narrowing toward apex; apex deeply and narrowly notched ( Fig. 44 ); with 5 pairs of about equally long, weak megasetae in longitudinal group starting at distal half. Superior appendage ( Fig. 43 ) tubular in dorsal view, slightly club­shaped in lateral view, oriented posterolaterally. Primary branch of gonocoxite, in lateral view ( Fig. 43 ), generally widely triangular, with slightly undulate dorsal margin; apex rounded in lateral view, produced into hook­like process visible in dorsal view ( Fig. 44 ); central part of primary branch wider than height of central part of tergum X ( Fig. 43 ); anterodorsal margin convex, smooth; posteroventral margin weakly sigmoid.; basimesal lobe large, tubular, protruding primary branch and with undulating apex ( Fig. 43, 45 ); with slightly converging median margins armed with strong setae; with about 6 long megasetae on dorsal margin; basal plate, in lateral view ( Fig. 43 ), nearly straight, oriented anteroventrally, apex rounded; in ventral view ( Fig. 45 ), strongly narrowing toward apex. Phallus, in lateral view ( Fig. 46 ), with anterior half curving posteriorly, gently bent ventrad at midlength, dorsal margin convex along its length; ventral margin curving; anterior 1/5 about as broad as its central part ( Fig. 46 ); in ventral view ( Fig. 47 ), tubular along its length; phallobase absent; endotheca slightly produced; sperm channel undivided; sclerotized posteroventral part narrow.

Holotype male: VENEZUELA: T.F.A. [Territorio Federal Amazonas = Estado Amazonas]: Cerro de la Neblina, Basecamp, 0°51'N, 66°10'W, 140 m, 13–15.iii.1984, O.S. Flint, Jr. & J. Louton ( NMNH, pinned).

Paratypes: same data as holotype — 8 males, 9 females ( NMNH, pinned); same data as holotype, except 20–24.iii.1984, O.S. Flint, Jr. & J. Louton — 30 males, 50 females ( NMNH, alcohol), 2 males, 2 females ( UMSP, alcohol), 2 males, 2 females ( NRM, alcohol), 2 males, 2 females ( IZAM, alcohol); same data as holotype, except 0°50'N, 66°9'44''W, 140 m, 13–20.ii.1984, D. Davis & T. McCabe — 1 male, 6 females ( NMNH, alcohol); same data as holotype, except 0°50'N, 66°9'44''W, 140 m, 21–29.ii.1984, D. Davis & T.McCabe — 3 males, 4 females ( NMNH, alcohol); same data as holotype, except 0°50'N, 66°9'44''W, 140 m, 1–10.iii.1984, D. Davis & T. McCabe — 14 males, 19 females ( NMNH, alcohol); same data as holotype, except 8–9.ii.1985, W.E.Steiner — 7 males, 10 females ( NMNH, pinned); same data as holotype, except 10–20.ii.1985, P.J. & P.M. Spangler, R.A. Faitoute, & W.E. Steiner — 4 females ( NMNH, pinned); same data as holotype, except Camp IV, 0°58'N, 65°57'W, 760 m, 15–18.iii.1984, O.S. Flint, Jr. — 2 males ( NMNH, alcohol).

Distribution. Venezuela (Amazonas).

Etymology. neblinensis , derived from the type locality, Cerro de la Neblina. The name is to be treated as a noun in the genitive case.

Figures

FIGURE 88. Map of Venezuela showing distributions of H. fistulata (circle), H. grenadensis (rectangles), H. maculisternum (triangle), H. venezuelensis (diamond), H. neblinensis (crosses), and H. perija (stars).

FIGURES 41 – 47. Helicopsyche neblinensis, new species, holotype. 41 — sternum VI process, lateral; 42 — sternum VI process, ventral; 43 — male genitalia, lateral; 44 — male genitalia, dorsal; 45 — male genitalia, ventral; 46 — phallus, lateral; 47 — phallus, ventral.