Revision of Trechus Clairville, 1806 of the Bale Mountains and adjacent volcanos, Ethiopia (Coleoptera, Carabidae, Trechini)

Joachim Schmidt, Arnaud Faille

Abstract


Based on a study of 2150 specimens of the genus Trechus Clairville, 1806 from the Bale Mts, Mount Chillalo, and Mount Enkuolo, southern Ethiopia, the current knowledge regarding systematics and distribution of the genus in the area is summarized. Twenty-six new species are described and figured in detail: Trechus abalkhasimi sp. nov. (southeastern slope of Bale Mts, below Mt Abalk-hasim); T. adaba sp. nov. (western Bale Mts, above Adaba); T. angavoensis sp. nov. (western Bale Mts, above Dodola); T. balesilvestris sp. nov. (western Bale Mts, above Adaba); T. bombi sp. nov. (southern escarpment of Bale Mts, Harenna Forest); T. colobus sp. nov. (western Bale Mts); T. depressipennis sp. nov. (northeastern margin of Sanetti Plateau, Bale Mts); T. dodola sp. nov. (western Bale Mts, above Dodola); T. fisehai sp. nov. (northern slope of Bale Mts, above Goba); T. grandipennis sp. nov. and T. hagenia sp. nov. (southern escarpment of Bale Mts, Harenna Forest); T. haggei sp. nov. (northeastern margin of Sanetti Plateau); T. harenna sp. nov. and T. harryi sp. nov. (southern escarpment of Bale Mts, Harenna Forest); T. iridescens sp. nov. (southeastern slope of Bale Mts, below Mt Abalk-hasim); T. mattisi sp. nov. (southern escarpment of Bale Mts, Harenna Forest); T. mekbibi sp. nov. (southern and western part of Bale Mts); T. minitrechus sp. nov. (northeastern slope of Mt Enkuolo); T. nanulus sp. nov. (southern escarpment of Bale Mts, Harenna Forest); T. nigrifemoralis sp. nov. and T. oppositus sp. nov. (western Bale Mts, above Dodola); T. rira sp. nov. (southern escarpment of Bale Mts, upper Rira Valley); T. sanettii sp. nov. (southeastern slope of Sanetti Plateau, Bale Mts); T. tragelaphus sp. nov. (western Bale Mts, above Dodola); T. transversicollis sp. nov. (southern escarpment of Bale Mts, Harenna Forest); T. wiersbowskyi sp. nov. (southern escarpment of Bale Mts, upper Rira Valley). New distributional data are provided for T. baleensis (Basilewsky, 1974), T. bastianinii Magrini & Sciaky, 2006, T. batuensis Magrini & Sciaky, 2006, T. chillalicus Jeannel, 1936, T. clarkeianus (Basilewsky, 1974), T. culminicola Jeannel, 1936, T. ericalis Magrini, Quéinnec & Vigna Taglianti, 2013, T. gallorites Jeannel, 1936, T. gypaeti Vigna Taglianti & Magrini, 2010, T. oromiensis Magrini, Quéinnec & Vigna Taglianti, 2012, T. relictus Magrini, Quéinnec & Vigna Taglianti, 2012 and T. rotundicollis (Basilewsky, 1974). Cothresia robini Basilewsky, 1974 is considered a junior synonym of T. chillalicus Jeannel, 1936. A key to all species known to occur in the Bale Mts and adjacent volcanos is presented.


Keywords


Ground beetles; new species; new synonymy; key to species; local endemism; Africa

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DOI: https://doi.org/10.5852/ejt.2018.446

References


Basilewsky P. 1962. Mission Zoologique de l’I.R.S.A.C. en Afrique orientale (P. Basilewsky et N. Leleup, 1957). LX. Coleoptera Carabidae. Annales Musée Royal de l’Afrique centrale 8 (107): 48–337.

Basilewsky P. 1974. Les Placomotrechina d’Ethiopie (Col. Carabidae Trechinae). Revue de Zoologie africaine 88 (1): 148–158.

Basilewsky P. 1975. Coléoptères Carabidae africains nouveaux XIX. Revue de Zoologie africaine 89 (1): 96–112.

Brühl C.A. 1997. Flightless insects: a test case for historical relationships of African mountains. Journal of Biogeography 24: 233–250. https://doi.org/10.1046/j.1365-2699.1997.00073.x

Casale A. 2011. Two new subterranean, microphthalmous trechine beetles from the Mediterranean area, and a synonymic note (Coleoptera: Carabidae: Trechini). Contributions to Natural History 16: 1–16.

Faille A., Casale A. & Ribera I. 2010 Phylogenetic relationships of west Mediterranean troglobitic Trechini ground beetles (Coleoptera: Carabidae). Zoologica Scripta 40: 282–295.

Faille A., Casale A., Balke M. & Ribera I. 2013. A molecular phylogeny of alpine subterranean Trechini (Coleoptera: Carabidae). BMC Evolutionary Biology 13: 248. https://doi.org/10.1186/1471-2148-13-248

Geginat G. 2008. Revision of the genus Cothresia Jeannel, 1964 (Coleoptera: Carabidae: Trechinae: Trechodina). Annals of the Transvaal Museum 45: 115–126.

Jeannel R. 1936. Sur des Trechinae recueillis par M. Hugh Scott en Abyssinie. Revue française d’Entomologie 2 (4) (1935): 205–212.

Jeannel R. 1954. Les Trechus du Simiène récoltés par le Dr H. Scott en 1952, (Coleoptera Trechidae) avec les planches I et II. Revue française d’Entomologie 21 (3): 171–183 + 2 plates.

Jeannel R. 1960. Un nouveau Trechus de l’Abyssinie. Revue française d’Entomologie 27 (4): 265–266.

Knapp R. 1973. The Vegetation of Africa with References to Environment, Development, Economy, Agriculuture and Forestry Geography. Gustav Fischer, Stuttgart.

Magrini P., Quéinnec E. & Vigna Taglianti A. 2012. A new subgenus and two new species of Trechus from Ethiopia (Coleoptera, Carabidae). Fragmenta entomologica 44 (1): 19–32. https://doi.org/10.4081/fe.2012.30

Magrini P., Quéinnec E. & Vigna Taglianti A. 2013. A new species of Trechus from the Ethiopian Plateau (Coleoptera, Carabidae). Fragmenta entomologica 45 (1–2): 17–24. https://doi.org/10.4081/fe.2013.13

Magrini P. & Sciaky R. 2006. Cinque nuove specie di Trechus dell’Ethiopia (Coleoptera, Carabidae). Fragmenta entomologica 38 (2): 173–190. https://doi.org/10.4081/fe.2006.4

Mani M.S. 1968. Ecology and Biogeography of High Altitude Insects. Junk Publishers, The Hague.

Ortuño V.M. & Novoa F. 2011. A new species of Trechus from the Ethiopian Highlands (Coleoptera: Carabidae: Trechinae) and key to the Trechus species of Ethiopia. Annals of the Entomological Society of America 104 (2): 132–140. https://doi.org/10.1603/AN10122

Pawłowski J. 2001. Le genre Trechus Clairville, 1806 (Coleoptera: Carabidae: Trechini) dans la collection Èthiopienne du Musée Royal de l’Afrique Centrale. I. Groupe du T. chokiensis. Elytron 15: 97–108.

Pawłowski J. 2003. Preliminary report on Ethiopian species of the genus Trechus Clairville, 1806 (Coleoptera: Carabidae). Baltic Journal of Coleopterology 3 (2): 157–160.

Williams F.M. 2016. Understanding Ethiopia. Geology and Scenery. Springer International Publishing, Switzerland. https://doi.org/10.1007/978-3-319-02180-5

Vigna Taglianti A. & Magrini P. 2010. A new subgenus and a new species of Trechus from Ethiopia (Coleoptera, Carabidae). Fragmenta entomologica 41 (1): 69–76. https://doi.org/10.4081/fe.2009.82


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