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 dodola sp. nov. urn:lsid:zoobank.org:act: 08D6193D-BAEF-4341-9982-52F40BC7C51E Figs 25 , 29 , 33 , 52 Diagnosis Very similar to T. nanulus sp. nov. but slightly larger, colour of body lighter brown, aedeagal median lobe more markedly and more evenly curved, and – the most distinctive character – with two basal protarsomeres of male dilated. For comparison with the likewise similar species T. adaba sp. nov. , T. harenna sp. nov. and T. harryi sp. nov. see descriptions below. Etymology The specific epithet refers to the city Dodola, situated on the northern slope of the western Bale Mts, close to the type locality of the new species. Figs 25–28. Trechus spp., habitus. 25 . T. dodola sp. nov. , holotype. 26 . T. adaba sp. nov. , paratype, ³. 27 . T. harryi sp. nov. , paratype, ³. 28 . T. harenna sp. nov. , paratype, ³. Material examined Holotype ETHIOPIA : ³, Oromia , western Bale Mts , above Dodola , alt. 2700–2850 m , 06°53′49″ N , 39°11′32″ E , Dec. 2006 ( CSCHM , registration number ZSM _COL_2018_009). Paratypes ETHIOPIA : 1 ³, 3 ♀♀ , same data as for holotype ( CAF , CSCHM ). Description BODY LENGTH. 2.3–2.7 mm (Ø = 2.56 mm , n = 5). PROPORTIONS (n = 5). PW/HW = 1.34–1.44 (Ø = 1.40); PW/PL = 1.50–1.57 (Ø = 1.53); PW/PBW = 1.24–1.29 (Ø = 1.26); EW/PW = 1.43–1.48 (Ø = 1.46); EL/EW = 1.29–1.33 (Ø = 1.30). COLOUR. Head, pronotum and elytra brown, shiny, elytra slightly iridescent. Clypeus, labrum, palpi, antennal base and legs yellowish; antennae distally indistinctly darkened beginning from apical third of third antennomere. MICROSCULPTURE. Same in males and females. Head with almost isodiametric meshes on disc and supraorbital area, smaller and slightly transverse meshes on clypeus. Pronotum with very finely engraved transverse meshes. Elytra with hardly visible, very finely engraved and very narrow transverse meshes. HEAD. Comparatively robust. Mandibles short. Labrum with apical margin widely emarginated. Eyes moderately small, distinctly convexly protruded. Tempora convex, markedly wrinkled to the neck, 0.7–0.8 times as long as eyes, smooth. Frons and supraorbital area strongly convex, with supraorbital furrows almost uniformly bent on disc, deep throughout. Antennae short, proportions of the first four antennomeres as follows: 1/1/0.9/0.7–0.8; antennomeres 7–9 approx. 1.3 times as long as broad. PROTHORAX. Pronotum large, markedly transverse, broadest portion in or slightly before middle, base slightly wider than apical margin. Disc markedly convex. Anterior margin slightly concave with anterior angles slightly protruded. Sides almost evenly rounded throughout. Laterobasal angles very obtuse, blunt at apex. Marginal gutter very narrow, not widened near laterobasal angles. Base straight in middle, distinctly bent anteriorly at outer quarter. Median longitudinal impression fine, not deepened near base, disappearing at apex; anterior transverse indistinct, smooth; posterior transverse impression very shallow; laterobasal foveae very small, shallow, smooth. Pronotum with laterobasal setae present. PTEROTHORAX. Elytra convex on disc, in dorsal view short and broad, broadest in mid-length, with shoulders fully rounded; broadly rounded at apex. Striae impunctate, parascutellar stria absent, first stria absent or indistinct on disc, very finely impressed near apex, striae 2–4 (5) indistinct, external striae absent but stria 8 moderately impressed from level of the middle group of the marginal umbilicate pores towards apex. All intervals flat. Recurrent preapical stria deep, curved in front, directed to the fifth stria. Parascutellar setiferous pore present; third stria with two setiferous dorsal pores, the anterior one at the end of the anterior elytral quarter, the posterior one in middle, and with preapical seta which is situated at the apical anastomosis of second and third striae, slightly closer to elytral apex than to suture. Number and positions of the setae of the marginal umbilicate series as in Trechus s. str. LEGS. Short and comparatively thin; protibia slightly dilated towards apex, almost straight, finely grooved on external surface. Two basal protarsomeres of male dilated. MALE GENITALIA. EL/AL = 3.96–4.16 (n = 2). Aedeagal median lobe small and stout, in lateral view almost evenly bent throughout but with apex very slightly bent upward; apical lamella short with apex Figs 29–32. Trechus spp., head, pronotum. 29 . T. dodola sp. nov. , holotype. 30 . T. adaba sp. nov. , paratype, ³. 31 . T. harryi sp. nov. , paratype, ³. 32 . T. harenna sp. nov. , paratype, ³. simply tapered; basal bulb moderately large, sagittal aileron average. Endophallus with copulatory piece bag-like, arcuate towards apex, very slightly sclerotized in most parts, somewhat more distinctly sclerotized on dorsal side if viewed from lateral. Distribution Known only from the western part of the Bale Mts, on the northern slope of the mountain above the city of Dodola, at altitudes of 2700–2850 m .