Two New Species Of Rhyacophila (Trichoptera, Rhyacophilidae) From Nepal Author Kiss, O. text Acta Zoologica Academiae Scientiarum Hungaricae 2011 57 2 111 116 journal article 10.5281/zenodo.12612287 2064-2474 12612287 Rhyacophila vajoni sp. n. ( Figs 10–12 , 15–16 ) Body length of male 9 mm , forewing length 11 mm , forewing width 4 mm , length of antenna 18 mm . Body, antennae, palpi and wings as well as legs and abdomen brown, genitalia yellowish brown ( Figs 15–16 ). Male genitalia ( Figs 10–12 , 16 ): Apicodorsal lobe of segment 9 relatively short with broad base and conical distal part in dorsal view ( Fig. 11 ). Praeanal appendages subtriangular in lateral view ( Fig. 10 ). Aedeagus tubular, basal part broad, middle portion undulated, distal part thin with apex pointing upwards in lateral view ( Figs 10 , 16 ). Paramere shorter than aedeagus, basal part protruding ventrally, then attentuating, middle part bulging dorsally, distal part slender and slightly curved upwards with tapering apex in lateral view ( Figs 10 , 16 ). Ventral lobe of aedeagus short with tips curved outwards ( Fig. 12 ). First joint of inferior appendages relatively short, broad at base, dorsal and ventral edges slightly curved, distal edge broad in lateral view ( Figs 10 , 16 ). Posterior edge of second joint of inferior appendages deeply excised forming small dorsal auricle with curved tip and big concave tapering ventral part in lateral view ( Figs 10 , 16 ). Female . Unknown. Material – Holotype : male, 2 km N of Tarebhir ( 27°23’N , 86°04’E , 2600 m ), Mt. Kalinchok , Central Nepal , by light trapping, 02.07.1997 , leg. MÁRTON HREBLAY and KRISZTINA CSÁK . Holotype is deposited in Mátra Museum , Gyöngyös , Hungary . Paratypes : 1male , 2 km N of Tarebhir (27°63’N, 86°09’E , 2600 m ), Mt. Kalinchok , Central Nepal , by light trapping, 02.07.1997 , leg. MÁRTON HREBLAY and KRISZTINA CSÁK (coll. OTTÓ KISS ) . 1male , 5 km W of Bigu , 2300 m , Mt. Kalinchok , Central Nepal , by light trapping, 03.07.1997 , leg. MÁRTON HREBLAY and KRISZTINA CSÁK (coll. OTTÓ KISS ) . Differential diagnosis: This species is similar to Rhyacophila lepcha SCHMID 1970 ( Figs 13–14 ) but differs from it in that: – apicodorsal lobe of segment 9 not short; – aedeagus not evenly broad in 2/3 length from base, distal 1/3 thinner; – paramere not uniform in width; – first joint of inferior appendages shorter; Figs 8–9. Rhyacophila horvathmargiti sp. n. , holotype, 8 = habitus, lateral view, 9 = genitalia, lateral view 14 Figs 10–14. 10–12 = Rhyacophila vajoni sp. n. , male genitalia: 10 = lateral view; 11 = apicodorsal lobe of segment 9, first and second joints of inferior appendages, dorsal view; 12 = aedeagus, ventral lobe of aedeagus, paramere, and first and second joints of inferior appendages, ventral view. 13–14 = Rhyacophila lepcha SCHMID , 1970 , male genitalia (drawings by SCHMID 1970 ): 13 = lateral view; 14 = apicodorsal lobe of segment 9, dorsal view. (Abbreviations: aed. = aedeagus; a.l. = apicodorsal lobe of segment; f.j. = first joint of inferior appendages; par. = paramere; p.r. = praeanal appendages; rac. = radix of anal sclerite; s.j. = second joint of inferior appendages, v.l. = ventral lobe of aedeagus) Figs 15–16. Rhyacophila vajoni sp. n. holotype, male, lateral view: 15 = habitus, 16 = genitalia – dorsal tip of second joint of inferior appendages not blunt, concave ventral portion not stout. Derivatio nominis: This species is cordially dedicated to Prof. Dr. IMRE VAJON , who was my professor and encouraged me in my professional career. * Acknowledgements – The author is grateful to † Dr. MÁRTON HREBLAY and KRISZTINA CSÁK for the light trap material.