Trechus rotundicollis ( Basilewsky, 1974 )

Schmidt, Joachim & Faille, Arnaud, 2018, Revision of Trechus Clairville, 1806 of the Bale Mountains and adjacent volcanos, Ethiopia (Coleoptera, Carabidae, Trechini), European Journal of Taxonomy 446, pp. 1-82 : 73-74

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.