Ochrotrichia avicula, Bueno-Soria, Joaquin & Holzenthal, Ralph W., 2008

Bueno-Soria, Joaquin & Holzenthal, Ralph W., 2008, The genus Ochrotrichia Mosely (Trichoptera: Hydroptilidae) in Costa Rica, with the description of four new species, Zootaxa 1763, pp. 41-54 : 42

Ochrotrichia avicula , new species

Fig. 1 a,b,c

This species is a member of the xena group of Flint (1972) as indicated by segment X occurring as a single broad, elongated plate. It is related to Ochrotrichia avis Bueno-Soria & Holzenthal and O. quebrada Bueno- Soria & Holzenthal by the similarly elongated appearance of segment X in lateral view. From these species, O. avicula new species differs by the presence of a wide, straight, elongated spine on the left side of segment X.

Male: Length of forewing 2.5 mm. Color in alcohol dark brown. Segment IX depressed, slightly produced anteriad. Segment X in dorsal view hood-like, with wide, long, straight, spine-like process on left side; apex with short sclerotized hook-like on right side; in lateral view, hood-like with strong hooked apex curved ventrad. Inferior appendage in lateral view elongate, apex rounded; apical portion and midventral areas with group of black peg-like setae; in ventral view symmetrical, with group of large, black, peg-like setae apically and midventrally. Phallus long, tubular, with slightly wider basal section.

Female: Unknown

Type material: Holotype, male. COSTA RICA: Puntarenas: Río Jaba at rock quarry, 1.4 km (air) W Las Cruces, 8.79° N, 82.97° W, el. 1150 m, 9.viii.1990, Holzenthal, Blahnik and Muñoz ( UMSP). Paratypes: same data as the holotype 6 males ( UMSP, NMNH, INBIO, CNIN).

Etymology: Avicula is the Latin feminine diminutive of bird, referring to the beak-like apex of segment X in lateral view.

Figures

FIGURE 1. Ochrotrichia avicula new species. Male genitalia. 1 a, dorsal view. 1 b, ventral view. 1 c, left lateral view.