Eur. J. Entomol. 107 (4): 621-629, 2010 | 10.14411/eje.2010.071

The Tachyusa coarctata species group revisited: Phylogenetic relationships and a new species (Coleoptera: Staphylinidae: Aleocharinae)

Grzegorz PAŚNIK
Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Sławkowska 17, 31-016 Kraków, Poland;

The Tachyusa coarctata species group is revised. The species group is defined on the basis of the distinctly asperate punctation on elytra, the dense punctation on tergites III-V with interstices between punctures 1.5-2.0 times their diameter, and the dense, subrecumbent pubescence on the abdomen. The T. coarctata species group is composed of twenty three species restricted in occurrence to the Holarctic and Africa, including one new species described from Iran: Tachyusa frischi sp.n. A revised key to the species in this group is provided. An analysis of the phylogeny of the Tachyusa coarctata species group based on cladistic methods is presented and the phylogenetic relationships among species are discussed.

Keywords: Coleoptera, Staphylinidae, Aleocharinae, Tachyusa, coarctata-group, new species, taxonomy, phylogeny

Received: May 5, 2010; Accepted: July 14, 2010; Published: October 20, 2010

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