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Type: Article
Published: 2019-03-04
Page range: 289–294
Abstract views: 64
PDF downloaded: 5

'Genus X2' finally named: discovery of males of Clavomicrus gen. n. in the Philippines (Coleoptera: Staphylinidae: Scydmaeninae)

Museum of Natural History, University of Wrocław, Sienkiewicza 21, 50-335 Wrocław, Poland.
Coleoptera Cephenniini Oriental new genus


In 2011 phylogenetic relationships of 'Cephennomicrus group' of Cephenniini were studied and several new genera were described. Two taxa, each represented by a single female and referred to as genus X1 (Sulawesi) and X2 (Philippines), were included in that study. Recently, a new sample of scydmaenines from Luzon has become available to my study, including a series of male and female specimens of the genus X2. Clavomicrus orousseti gen. & sp. n. is here described based on this material. SEM data are added to morphological structures previously illustrated on the basis of transparent slide preparations. Clavomicrus is the second genus of Cephenniini with the antennomere X and XI fused together into a histerid-like, abruptly delimited, oval club.



  1. Hadley, A. (2010) Combine ZP software. New Version. WWW document. Available from: (accessed 4 February 2018)

    Jałoszyński, P. (2009a) Trurlia, a new Oriental genus of the tribe Cephenniini (Coleoptera, Scydmaenidae). European Journal of Entomology, 106, 261–274.

    Jałoszyński, P. (2009b) Cephennomicrus Reitter (Coleoptera, Staphylinidae, Scydmaeninae) of Japan and Taiwan: taxonomic notes, ten new species and comparative morphology of nomurai and taiwanensis species groups. Zootaxa, 2145, 1–35.

    Jałoszyński, P. (2011a) Hlavaciellus Jałoszyński, 2006: eleven new species, detailed morphology and systematic position within Cephenniini (Coleoptera, Staphylinidae, Scydmaeninae). Zootaxa, 2763 (1), 1–33.

    Jałoszyński, P. (2011b) Cephenniini with prothoracic glands and internal 'cavities': new taxa, enigmatic characters and phylogeny of the Cephennomicrus group of genera (Coleoptera, Staphylinidae, Scydmaeninae). Systematic Entomology, 36, 470–496.

    Jałoszyński, P. (2011c) Four new species of Trurlia Jałoszyński from Sumatra and Borneo (Coleoptera: Staphylinidae: Scydmaeninae). Raffles Bulletin of Zoology, 59 (1), 69–75.

    Jałoszyński, P., Perkovsky, E.E. (2016) Diversity of Scydmaeninae (Coleoptera: Staphylinidae) in Upper Eocene Rovno amber. Zootaxa, 4157 (1), 1–85.

    Jałoszyński, P. (2016) Four new species of Pomphopsilla Jałoszyński and a new record of Cephennodes glabella Castellini in the Democratic Republic of the Congo (Coleoptera: Staphylinidae: Scydmaeninae). Zootaxa, 4098 (3), 593–600.

    Leschen, R.A.B. & Beutel, R.G. (2004) Ocellar atavism in Coleoptera: plesiomorphy or apomorphy? Journal of Zoological Systematics and Evolutionary Research, 42, 63–69.