Helicopsyche (Feropsyche) tachira, 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 : 13-15

Helicopsyche (Feropsyche) tachira , new species

Fig. 36–40 , 87

Helicopsyche tachira has a unique hourglass­shaped gonocoxite in lateral view. Tergum X is undivided apically as in H. cubana Kingsolver , H. guadeloupensis Malicky , H. laneblina , new species, H. molesta Botosaneanu , H. ramosi Flint , and H. sigillata Botosaneanu & Flint , but in H. tachira tergum X is pointed, while it is rounded in the other species.

Male. Head: Antennal scape about 1.5x longer than eye diameter, with pale yellowish setae. Eyes small. Maxillary palp segments equally long, each longer than eye diameter; covered by dark setae. Cephalic warts small, oval, about 0.8x as long as eye diameter, with dark golden and black setae. Forewing dark golden brown, length 5.9 mm. Sternum VI process absent.

Male genitalia ( Fig. 36–40 ). Segment IX, in lateral view ( Fig. 36 ), with anterior lobe narrowly ellipsoid, oriented anterodorsally, present dorsolaterally; anterodorsal margin concave; anteroventral margin widely concave; in dorsal view ( Fig. 37 ), with inner margin triangular; in ventral view ( Fig. 38 ), without posterior process; lateral apodeme present as anteriorly oriented, slightly sigmoid line ( Fig. 36 ) fading before reaching anterior margin; sub­marginal line absent; tergal transverse apodeme absent; sternal transverse apodeme absent. Segment X, in lateral view ( Fig. 36 ), nearly straight, oriented posteroventrad; slightly tapering before narrow apex, apex slightly pointed; in dorsal view ( Fig. 37 ), about parallel­sided proximally to triangular apex, apex without notch; with about 9 pairs of about equally long, weak megasetae in longitudinal group starting at proximal half. Superior appendage ( Fig. 36 ) club­shaped in lateral view, oriented posterolaterally ( Fig. 37 ). Primary branch of gonocoxite, in lateral view ( Fig. 36 ), generally narrowing at midlength, dorsal margin undulate; apex rounded in lateral and dorsal views ( Fig. 36, 37 ); central part of primary branch slightly wider than height of central part of tergum X ( Fig. 36 ); anterodorsal margin concave, smooth; posteroventral margin concave; inside of primary branch strongly widening medially into pointed process bearing 2 megasetae ( Fig. 37 ); basimesal lobe rounded apically, slightly protruding primary branch in lateral view ( Fig. 36 ); with slightly convex, apically diverging median margins ( Fig. 38 ); with nearly 30 short megasetae on dorsal margin; basal plate, in lateral view ( Fig. 36 ), short, thick, slightly bent ventrally, apex truncate; in ventral view ( Fig. 38 ), narrowly pointing anteriorly. Phallus, in lateral view ( Fig. 39 ), with anterior 1/3 nearly straight, strongly bent ventrad at midlength, dorsal margin undulating; ventral margin sharply curved; anterior 1/5 nearly 2x broader than its central part ( Fig. 39 ); in ventral view ( Fig. 40 ), phallobase absent; endotheca slightly produced; sperm channel divided into short, thick posterior and slender anterior parts; sclerotized posteroventral part wide.

Holotype male: VENEZUELA: Táchira : trib. to Río El Valle, 3.8 km SE El Zumbador, 7°57.411'N, 72°4.394'W, 2730 m, 21.iv.1995, Holzenthal, Cressa, Gutic ( UMSP 000022232) ( UMSP, pinned).

Distribution. Venezuela ( Táchira ).

Etymology. tachira , derived from the type locality, Táchira . The name is to be treated as a noun in apposition.

Figures

FIGURE 87. Map of Venezuela showing distributions of H. angulata (circle), H. monda (rectangle), H. tachira (triangle down), H. disjuncta (diamond), H. linabena (cross), H. camuriensis (triangle up), and H. selanderi (star).

FIGURES 36 – 40. Helicopsyche tachira, new species, holotype. 36 — male genitalia, lateral; 37 — male genitalia, dorsal; 38 — male genitalia, ventral; 39 — phallus, lateral; 40 — phallus, ventral.