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Type: Article
Published: 2016-09-26
Page range: 170–174
Abstract views: 63
PDF downloaded: 2

The genus Prothrombosternus (Coleoptera: Curculionidae: Molytinae) rediscovered: a male from Rubeho Mountains, Tanzania

CFIA, c/o Canadian National Collection (CNC) of Insects, Arachnids and Nematodes, K.W. Neatby Building, 960 Carling Ave., Ottawa, ON, K1A 0C6, Canada.
Coleoptera Eastern Arc Mountains DNA barcode CO1 lectotype


A male specimen of the monotypic weevil genus, Prothrombosternus Voss, 1965, so far known on the basis of only five syntypes from Mt. Meru and Mt. Hanang, Tanzania, is reported from the Rubeho Mountains, Tanzania. The lectotype of Prothrombosternus tarsalis Voss, 1965 is designated using a male from Mt. Meru. The Rubeho specimen shares the same external and genital morphological characters with the lectotype (both extensively illustrated) and, therefore, both are considered conspecific. The DNA barcode of the Rubeho specimen is publicly available at All six known specimens of Prothrombosternus are flightless and were found by sifting leaf litter at elevations between 1833–2500 m in wet Afromontane forests. The genus is, therefore, thought to be restricted to this highly fragmented habitat threatened by human encroachment. Presence of the genus on both geologically old (Rubeho Mountains; >10Ma) and young (Mt. Meru and Mt. Hanang volcanoes, <2Ma) forested highlands suggests presently unknown means of dispersal. The phylogenetic position of the genus is unknown and its taxonomic placement in Cycloterini cannot be presently tested.



  1. Alonso-Zarazaga, M.A. & Lyal, C.H.C. (1999) A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera) (excepting Scolytidae and Platypodidae). Entomopraxis, Barcelona, 315 pp.

    Grebennikov, V. (2015) Wingless Paocryptorrhinus (Coleoptera: Curculionidae) rediscovered in Tanzania: synonymy, four new species and a mtDNA phylogeography. Bonn Zoological Bulletin, 64, 1–15.

    Lovett, J.C. & Wasser, S.K. (Eds.) (1993) Biogeography and Ecology of the Rain Forests of Eastern Africa. Cambridge University Press, Cambridge, 341 pp.

    Lyal, C.H. (2014) 3.7.7 Molytinae Schoenherr, 1823. In: Leschen, R.A.B. & Beutel, R.G. (Eds.), Handbook of Zoology, Arthropoda: Insecta: Coleoptera. Volume 3: Morphology and Systematics (Phytophaga). Walter de Gruyter, Berlin, pp. 529–570.

    Richard, R. (1981) Insectes Coléoptères Curculionidae Cycloterini. Faune de Madagascar, 55, 1–104.

    Shorthouse, D.P. (2010) SimpleMappr, an online tool to produce publication-quality point maps. Available from: (accessed 12 October 2015)

    Thompson, R.T. (2005) On the nomenclature and taxonomy of Tournotaris Alonso-Zarazaga & Lyal, 1999 and related genera (Coleoptera: Curculionoidea: Erirhinidae). Deutsche Entomologische Zeitschrift, 52, 125–130.

    Voss, E. (1965) Mission zoologique de l'I.R.S.A.C. en Afrique orientale (P. Basilewsky et N. Leleup, 1957). XCVIII. - Coleoptera Curculionidae. II. Annales du Musée Royal de l'Afrique Centrale, série in 8°, 138, 293–375.