The Muscini flies of the world (Diptera, Muscidae): identification key and generic diagnoses Author Nihei, Silvio Shigueo Author Carvalho, Claudio José Barros De text Zootaxa 2009 1976 1 24 journal article 10.5281/zenodo.185153 0b5ad8cc-9b48-4700-acc5-012d1707f720 1175-5326 185153 Subgenus Morellia s.s. Morellia Robineau-Desvoidy, 1830 : 405 (as genus). Type species: Morellia agilis Robineau-Desvoidy, 1830 [= Musca hortorum Fallén, 1817 ]. Diagnosis. Colouration metallic bluish-black to violaceous; wing without maculae, but with maculae in several Neotropical species. Female with proclinate fronto-orbital usually developed; parafrons setulose on upper half; interfrontal seta absent. Postsutural intra-alars 1; intrapostalar present. Prosternum setulose or bare. Katepisternals 1+2. Wing with the basal portion of stem-vein setulose ventrally (bare in basalis -group); R4+5 setulose dorsally and ventrally; M bent forward towards R4+5 ( Fig. 11 ). Lower calypter enlarged posteriorly, extending under base of scutellum. Subcostal sclerite bare. Male mid femur of some species with a dorsal preapical protuberance bearing a dense set of setulae ( Fig. 18 ). Calcar weak or strong. Comments. The monophyly of Morellia s.s. was not supported by Nihei and de Carvalho (2007a) . A comprehensive phylogenetic study of Morellia s.l. is required to clarify the composition of Morellia s.s. , as well as its relationship with other subgenera. Note on basalis -group: This species-group was indicated as monophyletic by Nihei and de Carvalho (2007a) and is composed so far of two Neotropical species, namely, M. basalis (Walker) and M. paulistensis Pamplona & Mendes. Distribution (50 species). Afrotropical, Nearctic, Neotropical, Oriental and Palaearctic References. Afrotropical species: Peris (1961) , Zielke (1971) , Couri et al. (2006) ; Australasian: Pont (1973) ; Nearctic: Huckett (1965) ; Neotropical: Pamplona and Couri (1995) , de Carvalho and Couri (2002) ; Oriental: Emden (1965) , Xue and Chao (1998) ; Palaearctic: Zimin (1951) , Hennig (1964a) , Peris and Llorente (1963) , Zimin and Elberg (1988) , Xue and Chao (1998) , Gregor et al. (2002) , Shinonaga (2003) .