Title: Phylogeny of the cleptoparasitic Megachilini genera<i>Coelioxys</i>and<i>Radoszkowskiana</i>, with the description of six new subgenera in<i>Coelioxys</i>(Hymenoptera: Megachilidae)
Abstract: The Megachilini is the most speciose tribe within Megachilidae, comprising four genera: Coelioxys Latreille, 1809, Megachile Latreille, 1802, Noteriades Cockerell, 1931, and Radoszkowskiana Popov, 1955. In spite of its high diversity and ubiquity, the phylogenetic relationships both within and among the genera are still obscure. In view of the lack of a phylogenetic analysis for the species of the cleptoparasitic genera Coelioxys and Radoszkowskiana, a phylogeny using parsimony was inferred based on 239 adult morphological characters. The analyses included the four known species of Radoszkowskiana and 72 species of Coelioxys as the in-group, representing all subgenera currently recognized. Another 14 species of Anthidium Fabricius, 1804, Aspidosmia Brauns, 1926, Dioxys Lepeletier & Serville, 1825, Lithurgopsis Fox, 1902, Megachile, Noteriades, Ochreriades Mavromoustakis, 1956, and Osmia Panzer, 1806 were included as the out group. In the equal-weights analysis, Coelioxys and Radoszkowskiana formed a clade nested within Megachile. Taxonomic implications for the genus Coelioxys are as follows: the subgenera Coelioxys (Acrocoelioxys) Mitchell, 1973, Coelioxys (Haplocoelioxys) Mitchell, 1973, and Coelioxys (Mesocoelioxys) Ruszkowski, 1986 are merged with Coelioxys (Neocoelioxys) Mitchell, 1973, Coelioxys (Glyptocoelioxys) Mitchell, 1973, and Coelioxys (Allocoelioxys) Tkalců, 1974, respectively; Coelioxys (Dasycoelioxys) Mitchell, 1973 and Coelioxys (Paracoelioxys) Gribodo, 1884 are raised from synonymy with C. (Glyptocoelioxys) and Coelioxys (Coelioxys s.s.) Latreille, 1809, respectively. Six new subgenera are described: Coelioxys (Austrocleptria) Rocha-Filho and Coelioxys (Leuraspidia) Rocha-Filho from the Neotropical region, Coelioxys (Melissoctonia) Rocha-Filho and Coelioxys (Rozeniana) Rocha-Filho from the Palaearctic region, Coelioxys (Eingana) Rocha-Filho from Australia, and Coelioxys (Callosarissa) Rocha-Filho from both Australasian and Indomalayan regions. Some taxonomic observations are made and a key to the 20 Coelioxys subgenera recognized herein is provided.
Publication Year: 2016
Publication Date: 2016-10-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 8
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