Revision of Trechus Clairville, 1806 of the Bale Mountains and adjacent volcanos, Ethiopia (Coleoptera, Carabidae, Trechini) Author Schmidt, Joachim University of Rostock, Institute of Biosciences, General and Systematic Zoology, Universitätsplatz 2, 18055 Rostock, Germany. University of Marburg, Fb. 17 - Biologie, Karl-von-Frisch-Strasse 8, 35043 Marburg, Germany. Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta 37, 08003 Barcelona, Spain. MECADEV - UMR 7179 MNHN / CNRS, Paris, France. schmidt@agonum.de Author Faille, Arnaud arnaud1140@yahoo.fr text European Journal of Taxonomy 2018 2018-06-21 446 1 82 journal article 22084 10.5852/ejt.2018.446 08fb092e-b3df-47c4-a1ad-8ea8ffd2457a 3829902 56E50F4E-6A7E-4CE6-963E-3B49AA7A03B6 Trechus rotundicollis ( Basilewsky, 1974 ) Cothresia rotundicollis Basilewsky, 1974: 151 ; locus typicus : Bale Province, Ridge of Mt Batu, Deekasura Pass, ca. 36 km S of Dinshu, Bale Mts, alt. 4150 m , 6°55′ N , 39°46′ E . Trechus rotundicollis – Geginat 2008: 124 . Type material Not studied. This species was revised by Geginat (2008: 125) with presentation of a photo of the male genitalia. Identification is also based on additional material from the type locality. Material examined ETHIOPIA : 3 ³³, 2 ♀♀ , Oromia , env. Wasama Camp, alt. 3900–4150 m , 23–25 Feb. 2013 , 06°55′ N , 39°46′ E (= type locality) ( CSCHM ). Identification The largest species of the study area, with body length 5.9–6.6 mm . Externally, most similar to the sympatric T. baleensis (and its allopatric sister species T. chillalicus from Mt Chillalo), however, easy to distinguish due to the markedly elongated median lobe of aedeagus ( Geginat 2008: 125 ). In addition, this is the only species of the study area with additional setae of the marginal umbilicate series. Distribution Endemic to the northern slope of the Bale Mts; up to today only known from the Wasama Valley south of Dinsho. The species has been found at altitudes of approximately 3900–4150 m .