- 期刊
The Phylogenetic Structure of Metriorrhynchini Fauna of Sulawesi (Coleoptera: Lycidae) with Descriptions of a New Genus, Mangkutanus, and Three New Species of Xylobanus
並列摘要
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 Afro-Oriental clade consisting of Cautires Waterhouse, 1879 and Xylobanus Waterhouse, 1879, and an Austral-Oriental 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.
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