Ochrotrichia conformalis, 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 : 45-46

Ochrotrichia conformalis , new species

Figs. 4 a, b, c

The presence of 2 dark spine-like processes on segment X and similarly shaped inferior appendages in lateral view, make to Ochrotrichia conformalis new species a member of the arranca group ( Flint 1972) closely related to O. arranca (Mosely) ( Fig. 3 ), and O. quasi , new species. However, the wide, stout, basal lobe of the inferior appendages in ventral view clearly separates O. conformalis new species from O. arranca (Mosely) and O. quasi , new species.

Male: Length of forewing 2.0 mm. Color in alcohol stramineous. Segment IX depressed, produced anteriad. Segment X in dorsal view with long, slightly curved, dorsal process bearing 2 large black setae; left side with apical hook-like process; in lateral view, ventrally with 2 curved processes, 1 long with acute, ventrally directed apex, the other shorter, wider basally. Inferior appendage in lateral view, with elongate, finger-like dorsal lobe; left inferior appendage with elongate, bifurcate ventral lobe, between lobes 2 short black spineslike; right inferior appendage with large, apically darkened hook-like process, ventral lobe bearing 2 preapical, black spines-like; in ventral view, left and right ventral lobes of inferior appendages appearing short, stout, wide basally, with 2 dark, preapical spines-like; apex acute, ending in long dark spine-like. Phallus long, thread-like.

Female: Unknown

Type material: Holotype, male. COSTA RICA: Alajuela: Reserva Forestal San Ramón, Río San Lorencito and tribs., 10.216º N, 84.607º W, el. 980 m, 1–4.v.1990, Holzenthal & Blahnik ( UMSP). Paratypes: same data as holotype, 2 males ( UMSP, NMNH).

Etymology: From the Latin word conformalis ; in reference to the similarity of this species with O. arranca (Mosely) .

Figures

FIGURE 3. Ochrotrichia arranca (Mosely). Male genitalia. 3 a, ventral view. 3 b, left lateral view. 3 c, right lateral view. Abbreviations: segment IX (IX), segment X (X), Dorsal lobe (dl), Ventral lobe (vl).

FIGURE 4. Ochrotrichia conformalis new species. Male genitalia. 4 a, dorsal view. 4 b, ventral view. 4 c, right lateral view.