Prochetostoma, a New Genus Proposed as a Basal Group of the Subtribe Chetostomatina (Diptera: Tephritidae)

摘要

A new genus, Prochetostoma Han, is proposed based on two tephritid species: P. bhutanicum, n. sp., and P. contemnens (Hering). A cladogram of these species and representative species of all the other genera of the subtribe Chetostomatina (Tribe Trypetini) is presented in discussion of the phylogenetic position of the new genus. Prochetostoma is recognized as a basal group within the subtribe, but its monophyly is neither supported nor rejected. A tentative phylogeny of the whole Chetostomatina is also suggested based on the present analysis and data from the literature.