Helicopsyche (Feropsyche) venezuelensis, 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 : 17-19

Helicopsyche (Feropsyche) venezuelensis , new species

Fig. 48–54 , 88

The gonocoxite of H. venezuelensis , new species, is distally rounded and club­shaped as in H. falcigona Botosaneanu & Flint ; it can be distinguished from that species by its nearly right­angled dorsal and anterior margins of segment IX, the absence of setae basally on tergum X, and in ventral view, the more prominent basimesal lobes of the gonocoxite.

Male. Head: Antennal scape about 2/3 as long as eye diameter. Maxillary palp segments equally long, each segment as long as scape. Cephalic warts rounded, convex, about 1/3 as long as eye diameter. Forewing golden brown, length 4.4 mm. Sternum VI process ( Fig. 48, 49 ) 2/5 its segment length, covered by microtrichiae; in lateral view ( Fig. 48 ), slightly curving posteriorly, slender before wide apex; wide, parallel­sided in ventral view ( Fig. 49 ); apex bearing numerous ventral lamellae ( Fig. 49 ).

Male genitalia ( Fig. 50–54 ). Segment IX, in lateral view ( Fig. 50 ), with anterior lobe slightly developed, oriented anteriad and located dorsolaterally; anterodorsal and anteroventral margins nearly straight; in dorsal view ( Fig. 51 ), with inner margin widely ellipsoid; in ventral view ( Fig. 52 ), without posterior process; lateral apodeme present as anteriorly oriented, nearly straight line ( Fig. 50 ) reaching anterior margin; sub­marginal line absent; tergal transverse apodeme short; sternal transverse apodeme short. Segment X, in lateral view ( Fig. 50 ), oriented posteroventrad, subapically nearly straight, apex slightly curving posteriad; slightly tapering along its length, apex rounded; in dorsal view ( Fig. 51 ), slightly wider at midlength; apex without notch ( Fig. 51 ); with about 11 pairs of about equally long, weak megasetae in longitudinal group starting at proximal half. Superior appendage ( Fig. 50 ), tubular in dorsal view, slightly club­shaped in lateral view; oriented posterolaterally. Primary branch of gonocoxite, in lateral view ( Fig. 50 ), generally widely club­shaped distally, with slightly undulate dorsal margin; apex rounded in lateral and dorsal views ( Fig. 50, 51 ); central part of primary branch narrower than height of central part of tergum X ( Fig. 50 ); anterodorsal margin concave, smooth; posteroventral margin concave, with small undulations; basimesal lobe large, rectangular and protruding primary branch in lateral view ( Fig. 50 ); in ventral view, tubular ( Fig. 52 ), with slightly diverging median margins armed with strong setae; with about 10 long megasetae on dorsal margin; basal plate, in lateral view ( Fig. 50 ), slightly curving dorsally, oriented anteroventrally, apex pointed; in ventral view ( Fig. 52 ), slightly narrowing toward rounded apex. Phallus, in lateral view ( Fig. 53 ), gently bent ventrad at midlength, dorsal margin nearly straight along its length; ventral margin deeply concave; anterior 1/5 about 2x broader than its central part ( Fig. 53 ); in ventral view ( Fig. 54 ) tapering along its length; phallobase apparently present laterally; endotheca slightly produced ( Fig. 53 ); sperm channel divided into wide posterior and narrow anterior parts; sclerotized posteroventral part narrow ( Fig. 53 ).

Holotype male: VENEZUELA: Miranda: Río Caruao, 1.6 km S Caruao, 10.597°N, 66.346°W, 5 m, 26.i.1994, Holzenthal, Cressa, & Rincón ( UMSP 000022215) ( UMSP, pinned).

Distribution. Venezuela (Miranda).

Etymology. venezuelensis , derived from the type country, Venezuela. 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 48 – 54. Helicopsyche venezuelensis, new species, holotype. 48 — sternum VI process, lateral; 49 — sternum VI process, ventral; 50 — male genitalia, lateral; 51 — male genitalia, dorsal; 52 — male genitalia, ventral; 53 — phallus, lateral; 54 — phallus, ventral.