Helicopsyche (Feropsyche) perija, 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 : 27-29

Helicopsyche (Feropsyche) perija , new species

Fig. 79–85 , 88

This new species is similar to H. circulata and H. planorboides and can be separated from those species based on characters discussed in the diagnosis of H. circulata .

Male. Head: Antennal scape slightly longer than eye diameter. Maxillary palp segments equally long, as long as eye diameter. Cephalic warts oval, about half as long as eye diameter; with pale grey and dark grey setae, some dark brown setae near lateral margins. Forewing pale golden grey, length 3.1–3.9 mm. Sternum VI process ( Fig. 79, 80 ) 2/5 its segment length, apparently smooth; in lateral view ( Fig. 79 ), slightly curving posteriorly, tubular, except narrowing at apex; in ventral view ( Fig. 80 ), parallel­sided; distally with numerous ventral subapical lamellae and apical, minute spines ( Fig. 80 ).

Male genitalia ( Fig. 81–85 ). Segment IX, in lateral view ( Fig. 81 ), with anterior lobe sharply triangular, oriented anterodorsad and located ventrolaterally on segment; anterodorsal margin concave, anteroventral margin shallowly concave; in dorsal view ( Fig. 82 ), with inner margin widely ellipsoid; in ventral view ( Fig. 83 ), with rounded posterior process; lateral apodeme sigmoid, pointing toward anterior apex of segment, fading before sub­marginal line ( Fig. 81 ); sub­marginal line well developed, strongly convex anteriorly; transverse apodemes absent. Segment X, in lateral view ( Fig. 81 ), oriented posteroventrad, nearly straight; narrowing along its length toward rounded apex; in dorsal view ( Fig. 82 ), wide, with sub­parallel lateral margins; apex with wide, V­shaped notch ( Fig. 82 ); with about 17 pairs of about equally long megasetae in longitudinal group starting at proximal half on segment. Superior appendage ( Fig. 81 ) tubular; oriented ventrolaterad ( Fig. 81, 82 ). Primary branch of gonocoxite, in lateral view ( Fig. 81 ), widely club­shaped, with slightly undulate dorsal margin; apex rounded in lateral and dorsal views ( Fig. 81, 82 ); central part of primary branch about as wide as height of central part of tergum X ( Fig. 81 ); anterodorsal margin nearly straight, smooth; posteroventral margin slightly convex, undulated; basimesal lobe short, somewhat pointed in lateral view ( Fig. 81 ); in ventral view, with about right­angled median corner, with weakly produced posterior setal bases ( Fig. 83 ); with nearly straight and parallel­sided, smooth median margins; with about 3 long megasetae on apical margin; basal plate, in lateral view ( Fig. 81 ), tapering toward apex; in ventral view ( Fig. 83 ), strongly anteriorly rounded. Phallus, in lateral view ( Fig. 84 ), smoothly bent ventrad at proximal 1/3, dorsal margin sigmoid along proximal 2/3; ventral margin gently curving ventrally at midlength; anterior 1/5 nearly 2x broader than its central part ( Fig. 84 ); in ventral view ( Fig. 85 ), narrowing toward midlength; phallobase present; endotheca produced into dorsal lobe ( Fig. 84 ); sperm channel apparently undivided; sclerotized posteroventral part wide ( Fig. 84 ).

Holotype male: VENEZUELA: Táchira : trib. to Río El Valle, 3.8 km SE El Zumbador, 7°57.411'N, 72°04.394'W, 2730 m, 21.iv.1995, Holzenthal, Cressa, Rincón ( UMSP 000022197) ( UMSP, pinned).

Paratype: VENEZUELA: Zulia: Parque Nacional Perijá , Río Negro in Toromo, 10.051°N, 72.712°W, 360 m, 15.i.1994, Holzenthal, Cressa, Rincón — 1 male ( UMSP, pinned).

Distribution. Venezuela ( Táchira , Zulia).

Etymology. The name perija , is derived from the type locality, Parque Nacional Perijá . The name is to be treated as a noun in apposition.

NEW DISTRIBUTION RECORDS OF VENEZUELAN HELICOPSYCHE (FEROPSYCHE)

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 79 – 85. Helicopsyche perija, new species, holotype. 79 — sternum VI process, lateral; 80 — sternum VI process, ventral; 81 — male genitalia, lateral; 82 — male genitalia, dorsal; 83 — male genitalia, ventral; 84 — phallus, lateral; 85 — phallus, ventral.