Helicopsyche golfitoensis Johanson & Holzenthal, 2010, new species
Creators: name: Johanson, Kjell Arne
name: Holzenthal, Ralph W.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Helicopsychidae
Helicopsyche
Helicopsyche golfitoensis

description: Helicopsyche golfitoensis, new species
Fig. 8–14, 22
Helicopsyche golfitoensis is most similar to H. tachira Johanson & Holzenthal, 2004, particularly in the shape of the primary branch of the gonopods. Helicopsyche golfitoensis is easily distinguished from H. tachira by the presence of a long process on the posteroventral margin of the primary branch of the gonopods and by the wide anterior lobes of segment IX.
Forewing length 4.0 mm; hind wing length 2.9 mm.
Male abdomen and genitalia (Fig. 8–14). Sternal process VI long, straight, oriented posteroventrad; parallel-sided in lateral view (Fig. 8); narrowest at midlength in ventral view (Fig. 9). Anterior lobe of segment IX (Fig. 10) widely ellipsoid in lateral view, oriented anterad from midheight of segment IX; anterodorsal margin nearly straight; anteroventral margin shallowly concave; ventral margin short, straight (Fig. 10); in dorsal view, inner margin forming ovoid cavity (Fig. 11); in ventral view, with small central posterior process (Fig. 12); lateral apodeme nearly horizontal (Fig. 10); fading before anterior margin of segment, sub-marginal line absent; tergal and sternal transverse apodemes present. Tergum X, in lateral view, slightly curving posteroventrad (Fig. 10), straight, apex pointed, oriented posterad; in lateral view, weakly tapering along its length (Fig. 10); in dorsal view (Fig. 11), parallel-sided basally, narrowing from mid-length; apex shallowly notched, with about 14 pairs of equally long megasetae laterally longitudinal group starting just proximally of mid-length of segment. Superior appendage club-shaped (Fig. 10, 11). Primary branch of gonopods, in lateral view (Fig. 10), generally rectangular; dorsal half with undulating margins; apex wide, produced posterad; anterodorsal margin irregular; posteroventral margin with long posteroventral process with apical seta. Basomesal lobes narrowly triangular in lateral view (Fig. 10); in ventral view each with truncate apex covered by minute megasetae; mesal margins weakly concave (Fig. 12). Basal plate, in lateral view (Fig. 10), straight, wide distally; sharply narrowing anterad from mid-length; narrowly triangular in ventral view (Fig. 12). Phallic apparatus, in lateral view, wider anteriorly (Fig. 13), distally parallel-sided; slightly curving ventrad along its length; basis broad; in ventral view (Fig. 14), slightly wider proximally, strongly wider distally; endotheca not produced, posteroventral part well sclerotized; sperm channel slender, not widening posteriorly.
Male holotype. COSTA RICA: [Puntarenas] 2.8 mi E of Golfito, 18–19.vii.1967 [O.S. Flint, Jr.] (NMNH, alcohol).
Distribution. Costa Rica (Puntarenas) (Fig. 22).
Etymology. Golfitoensis, named for the town of Golfito, near the type locality.
description: Published as part of Johanson, Kjell Arne & Holzenthal, Ralph W., 2010, The snail-case caddisfly subgenus Helicopsyche (Feropsyche) in Costa Rica, with the description of 3 new species (Trichoptera: Helicopsychidae), pp. 37-47 in Zootaxa 2689 on pages 39-41, DOI: 10.5281/zenodo.199508