Pseudodoros (Pseudodoros) nigricollis Becker
Pseudodoros was described by Becker (1903) for his new species, nigricollis, from Egypt. Syrphus clavatus was described by Fabricius (1794) and placed under Pseudodoros by Thompson et al. (1976).
In 1949, Hull (1949a, b) designated a new subgenus for Baccha, Baccha (Dioprosopa), and designated clavatus Fabricius as the subgenotype species. Dioprosopa was created for the single species with epistoma and whole face producedforward beyond the antennal base, according to Hull.
Kassebeer (2000) described a new species from Southamerican Andes and recognized two different genera: Dioprosopa, for the species found in Neotropics, and Pseudodoros, for Afrotropical species. Mengual et al. (2008) recognised Dioprosopa as subgenus again after Thompson et al. (1976) synonymized it under Pseudodoros, but Thompson (2010) does not recognise any subgenera for Pseudodoros.
Synonyms:
Baccha extranea Bezzi, 1915: 47.