Vol. 50 No. 5, 2011

The Phylogenetic Structure of Metriorrhynchini Fauna of Sulawesi (Coleoptera: Lycidae) with Descriptions of a New Genus, Mangkutanus, and Three New Species of Xylobanus

Vaclav Kubecek, Milan Dvorak, and Ladislav Bocak*

Department of Zoology, Faculty of Science, Palacky University, Tr. Svobody 26, 771 46 Olomouc, Czech Republic

Vaclav Kubecek, Milan Dvorak, and Ladislav Bocak (2011) The phylogenetic structure of the Metriorrhynchini fauna from Sulawesi was investigated. We obtained DNA sequences for 3 fragments of the mitochondrial genome: cytochrome oxidase I, tRNA-Leu, and cytochrome oxidase subunit 2; NADH dehydrogenase subunit 5, tRNASer, tRNA-Glu, and tRNA-Phe; and rrnl, tRNA-Leu, and NADH dehydrogenase subunit 1 for a total of 3070 aligned nucleotide positions, and performed a phylogenetic analysis of 12 genera of the Metriorrhynchini from Sulawesi and adjacent regions. Metriorrhynchini formed a monophylum that was split into 2 clades: an AfroOriental clade consisting of Cautires Waterhouse, 1879 and Xylobanus Waterhouse, 1879, and an AustralOriental clade formed by 10 genera distributed either only in the Australian Region, or with hundreds of species in Australia and New Guinea and a few in the Oriental region. Altogether, 11 genera are known from Sulawesi, four of them endemic to the island, only 2 genera, Xylobanus and Cautires, with a presumed Oriental origin, and 9 belonging to the Australian clade. All 87 metriorrhynchine species except 1 are endemic to Sulawesi, and 79 (91%) of them belong to the Australian lineage. We propose Mangkutanus gen. nov. for 2 species, which were previously placed in Sulabanus Dvorak and Bocak, 2007. The genus is described, diagnostic characters are illustrated, and relationships are discussed. We further redescribe the genus Xylobanus, describe 3 new species, and provide a key to Sulawesi species.

Key words: Phylogeny, mtDNA, Endemism, Dispersal, Taxonomy, Wallacea.

*Correspondence:  E-mail:ladislav.bocak@upol.cz