oa Journal of the Entomological Society of Southern Africa - A new genus and two new species of Muscini from South Africa. (Diptera : Muscidae)
Malloch (1923) demonstrated that the genus Orthellia R.-D. could be separated from Pyrellia R.-D. and other genera of metallic Muscini by the presence of a tuft of black setulae on the posterior part of the suprasquamal ridge (parasquamal tuft). Since then most authors have followed Malloch in defining the genus. Curran (1935) in his study of the Ethiopian species of Orthellia drew attention to the fact that, in all species but two, the infra-alar bulla was haired. He suggested that it might be better to remove the exceptions, prima Curran and distincta Villeneuve (= gemma Bigot), from Orthellia. Karl (1935) used the character of a haired infra-alar bulla to define the genus Orthellia but probably did not know that apparent exceptions existed.
Article metrics loading...