Higher-Level Phylogeny of the Therevidae (Diptera: Insecta) Based on 28S Ribosomal and Elongation Factor-1α Gene Sequences |
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| Authors: | Longlong Yang Brian M. Wiegmann David K. Yeates Michael E. Irwin |
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| Affiliation: | a Department of Entomology, Box 7613, North Carolina State University, Raleigh, North Carolina, 27695;b Department of Zoology and Entomology, The University of Queensland, Brisbane, Queensland, 4072, Australia;c Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana–Champaign, Urbana, Illinois, 61820 |
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| Abstract: | Therevidae (stilleto flies) are a little-known family of asiloid brachyceran Diptera (Insecta). Separate and combined phylogenetic analyses of 1200 bases of the 28S ribosomal DNA and 1100 bases of elongation factor-1α were used to infer phylogenetic relationships within the family. The position of the enigmatic taxon Apsilocephala Kröber is evaluated in light of the molecular evidence. In all analyses, molecular data strongly support the monophyly of Therevidae, excluding Apsilocephala, and the division of Therevidae into two main clades corresponding to a previous classification of the family into the subfamilies Phycinae and Therevinae. Despite strong support for some relationships within these groups, relationships at the base of the two main clades are weakly supported. Short branch lengths for Australasian clades at the base of the Therevinae may represent a rapid radiation of therevids in Australia. |
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| Keywords: | Therevidae stiletto fly elongation factor-1α 28S ribosomal DNA phylogeny Diptera |
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