Rhyacophila hollosii, Kiss, Ottó, 2011

Kiss, Ottó, 2011, Two new species of Rhyacophila (Trichoptera, Rhyacophilidae) from Nepal, Zootaxa 2991, pp. 62-68 : 67

Rhyacophila hollosii new species

Figs 8 − 10

Male. Body length 8.3 mm, forewing length 10.3 mm, forewing width 4 mm, length of each antenna 7 mm. Body, antennae, palpi and wings yellowish brown, abdomen brown, legs yellowish brown.

Male genitalia ( Figs 8–10 ). Segment IX (a.l.IX., Fig. 10 ) short and V-shaped in dorsal view. Distal end of each preanal appendage (p.r., Fig. 8 ) V-shaped in lateral view. Segment X (X., Fig. 8 ) forming broad lobe with convex ventral margin and concave distal margin in lateral view. Phallicata (ph. of Figs 8, 9 ) with 2 pairs of dorsal teeth in middle﹔ pair of slender, curved subapical processes dorsally﹔ and U-shaped distal end. Parameres (par., Figs 8, 9 ) each divided into dorsal and ventral processes﹔ dorsal process tapering to acute apex nearly as long as phallicata, ventral process hooked slightly dorsad, setose, and much shorter than dorsal process ( Figs 8, 9 ). First segment of each inferior appendage (f.s., Fig. 8 ) broad, shorter than preanal appendages﹔ second segment (s.j., Fig. 8 ) with dorsal and distal angles obtuse and with elongate ventral apex directed caudoventrad.

Female. Unknown.

Holotype: 1 ♂, NEPAL: Ganesh Himal, Kamalang, 28o06’N, 85o11’E, 1850 m elevation, by light trapping, 27 October 1995, leg. Márton Hreblay and László Bódi (gen. prep. No. 112., Ottó Kiss) (coll. Mátra Museum).

Paratypes: 3 ♂♂, NEPAL: Mt. Kalinchok, 5 km W of Bigu, 27o63’N, 86o09’E, 2300 m elevation, by light trapping, 3 July 1997, leg. Márton Hreblay and Krisztina Csák (coll. Ottó Kiss).

Differential diagnosis. This species is very similar to Rhyacophila zhungpa Schmid (1970, p. 199, pl.XXX- VII, figs 1–3) ﹔ herein Figs 11–13 , of his R. curvata Group, but differs from it in that:

1. The distal ends of the preanal appendages are V-shaped (not slightly concave) in lateral view. Also, the preanal appendages are more slender in dorsal view (not thick).

2. The distal margins of segment X are concave, (not rounded).

3. The dorsal and distal angles of the second segment of the inferior appendages are obtuse (not rounded), and the ventral margins of the 2 segments are slightly concave, curved downward (not horizontal).

Derivatio nominis. This species is dedicated to Prof. Gábor Hollósi, who helped me with my education work.

Figures

FIGURES 8 − 10. Rhyacophila hollosii new species, holotype male genitalia. 8, left lateral view ﹔ 9, phallic apparatus, ventral view ﹔ 10, apicodorsal lobe of segment IX and preanal appendages, dorsal view.

FIGURES 11 − 13. Rhyacophila zhungpa Schmid, 1970, male genitalia. 11, left lateral view ﹔ 12, phallic apparatus, dorsal view ﹔ 13, preanal appendages, dorsal view (from Schmid, 1970).