Rhyacopsyche intraspira, Wasmund, Anne M. & Holzenthal, Ralph W., 2007

Wasmund, Anne M. & Holzenthal, Ralph W., 2007, A revision of the Neotropical caddisfly genus Rhyacopsyche, with the description of 13 new species (Trichoptera: Hydroptilidae), Zootaxa 1634, pp. 1-59 : 14

Rhyacopsyche intraspira , new species

Fig. 17

The form and features of the dorsolateral lobe and inferior appendage of R. intraspira , new species, and R. andina are very similar. However, the dorsolateral lobes of R. intraspira are nearly meeting dorsally, as opposed to widely separated condition exhibited by R. andina . This species can also be diagnosed by the apex of the phallus which is produced into a prominent sclerotized boot.

Adult (male: n=3, female: n=2). Forewing length 3.9–4.2, 4.1 mm. Color of head dark brown, antennae cream, legs medium brown, wings mottled medium and dark brown. Sternum VII with apicomesal point.

Male genitalia. Abdominal segment IX heavily setose, anterior margin deeply rounded; sternum IX, in lateral view, with posterior margin produced into small rounded process; posterior margin nearly straight; dorsolateral lobe of segment IX elongate, in dorsal view truncate, deeply divided, nearly meeting dorsally, apex bearing several short, dark, peglike setae. Tergum X partially retracted inside segment IX, articulating with intermediate appendage. Intermediate appendage produced into small slender plate lying mesad of inferior appendage, in ventral view, plate undulate. Inferior appendage elongate, heavily setose, dorsal margin enlarged at middle, apex bearing 2 peglike setae. Phallus linear, thin membranous sheath surrounding the middle of the phallus, covered with spicules; central tubule with large apical hook; apex of lateral process hooked.

Holotype male: PERU: Cuzco: Paucartambo to Pilcopata rd., Rio San Pedro at Puente San Pedro, 13°03.30’ S, 71°32.78’ W, 1445 m, 24.vi.1993, R Blahnik & M Pescador ( UMSP 000115060) ( MHNJP).

Paratypes: PERU: Cuzco: Paucartambo to Pilcopata rd., Rio San Pedro at Puente San Pedro, 13°03.30’ S, 71°32.78’ W, 1445 m, 24.vi.1993, R Blahnik & M Pescador — 1 male, 1 female ( UMSP); Paucartambo, Pte. San Pedro ca. 50 km NW Pilcopata, 1600 m, 2–3.ix.1988, O Flint & N Adams — 1 male, 1 female ( NMNH).

Distribution. Peru.

Etymology. Intra – in, spir – tapering point, for several spike-like setae of the male genitalia directed inward.

Figures

FIGURE 17. Rhyacopsyche intraspira, new species. Male genitalia: A—lateral; B—dorsal; C—ventral; D—phallus, dorsal.