Taxonomic and biogeographical review of the genus Trechus Clairville, 1806, from the Tibetan Himalaya and the southern central Tibetan Plateau (Coleoptera: Carabidae: Trechini) 2178 Author Schmidt, Joachim text Zootaxa 2009 2009-08-06 2178 1 1 72 https://biotaxa.org/Zootaxa/article/view/zootaxa.2178.1.1 journal article 10.11646/zootaxa.2178.1.1 1175­5334 5312276 Trechus tilitshoensis Schmidt, 1994 ( Figs. 30 , 42 ) Catalogue: Trechus tilitshoensis Schmidt, 1994: 130 . Locus typicus: Central Nepal , Manang Distr., Plateau above Tilitshó Lake at N-slope of Annapurna Massif, altitude approximately 5000 m . Type material: Holotype male, with label data “NEPAL-HIMALAYA, Annapurna-N-Abfall, W-Manang, 6- 8.10.92”, “Plateau über dem Tilitschok-Lake 5000 m , lg. Schmidt”, “ HOLOTYPUS Trechus tilitshoensis des. J. Schmidt 1993” ( SMTD ) . Paratypes : 8 males , 3 females , with same label data as holotype ( CSCHM , SMTD ) ; 10 males , 7 females , Annapurna Mts. , Tilitshó Lake W Manang , 4950–5200 m , 4.VI.1993 , leg. Schmidt ( CSCHM ) ; 2 males , Annapurna Mts. , Thorong Pass N Manang, E slope, 4900–5200 m , 8.VI.1993 , leg. Schmidt ( CSCHM ) . Additional material: NEPAL : 8 males , 3 females , Annapurna Mts. , Manang Distr. , E slope Kang La Pass , 5000 m , 3.VI.1994 , leg. J. Schmidt ( CSCHM ) ; 3 males , 1 female , Annapurna Mts. , Yakkharka N Manang , 4500 m , 28.V.1996 , leg. J. Schmidt ( CSCHM ) ; 10 males , 2 females , N Annapurna Mts. , Gungdang N-slope, W Thorung Phedi , 4600–4900 m , 30.V.1996 , leg. J. Schmidt ( CSCHM ) ; 24 males , 12 females , Dhaulagiri , upp. Yakkharka [place above Marpha north of Tukuche Peak], 4500–4600 m , 12.7.1998 , leg. C. Berndt & J. Schmidt ( CSCHM ) . Identification: See key above. Relationships: This species and the Western Nepalese species T. aedeagalis sp. n. , T. eremita sp. n. , T. franzianus Mateu & Deuve, 1979 , T. muguensis sp. n. , and T. sculptipennis sp. n. , together forming a group of closely related species which, in external morphology, differ very slightly from each other or, in some cases are almost identical, but which evolved remarkable differences in genital morphology. Currently, based on these characters it seems impossible to determine sister species relationships. Distribution: Fig. 98 . Tibetan Himalaya of Manang and Mustang Districts, Central Nepal . The species is known from several localities north of Annapurna Massif as well from the Northeast slope of Dhaulagiri Himal. Habitat: Edaphic species of the higher alpine zone; vertical distribution approximately 4900–5200 m . The specimens were found on humid, gently inclined slopes and along small depressions, often close to snow fields and melting water.