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The Afrotropical Delia is revised to include 20 species. Six new species are described: madagascariensis, ismayi, pseudoventralis, tibila, endorsina and cameroonica. Three new synonymies are established: Chortophila linearisAdams, 1905 = Hylemyia bracataRondani, 1866; Hylemyia disparBezzi, 1908 = Hylemyia bracataRondani, 1866; and Hylemyia capensis Malloch, 1924 = Hylemyia urbana Malloch, 1924. Hylemyia arambourgiSéguy, 1938 is resurrected from synonymy. The Delia bracata section is expanded to include a new subsection, the ventralis subsection.
The genus GymnochiromyiaHendel, 1933 is redescribed. Several new characters are used in the diagnosis, and the characters in the female postabdomen are presented and discussed for the first time. The little that is known on the biology, ecology and distribution of the genus is summarised. Fourteen new species are described from Southern Africa: balteata, capensis, gilva, maculiventris, malagasica, maraisi, megacephala, milieri, nubilipennis, pretoriella, setulosa, spinifera, stuckenbergi and turneri. A key is provided.
Apterous crickets of the tribe Gryllini from South Africa and Namibia are reviewed. Four new taxa are described;Natalogryllus Gorohov, gen. n., Kurtguentheria macroxipha Gorochov, sp. n., K. brachyxipha Gorochov. sp. n., Cophogryllus pietersburgi Gorochov. sp. n. The rank of the former subgenus Acophogryllus Gor. is raised to generic level. An identification key to the four genera and 14 species is given. Systematic position and distribution of some species are clarified.
The genus DogoniaOldroyd, 1970, one of eight Afrotropical genera of Stenopogoninae possessing setose anatergites, is revised. D. nigraOldroyd, 1970 is synonymised with D. saegeriOldroyd, 1970 and D. saegeri is redescribed with illustrations of both the male and female genitalia being presented. This monotypic genus is confined to the Garamba National Park in the Democratic Republic of the Congo.
The Philoliche aethiopica (Thunberg) species complex has a history of being taxonomically difficult. This group of pollinating flies is of particular interest to botanists and pollination biologists. This paper reviews its taxonomy and redescribes its species with the aid of new morphological and molecular data. Molecular evidence supports the group's monophyly, with two sister-clades, the “aethiopica” clade (= P. aethiopica) and the “rondani” clade (= P. elegans (Bigot), P. rondani (Bertoloni, P. rubiginosa Dias, and P. umbratipennis (Ricardo) stat. rev.). These clades correspond to two species groups defined by male morphology (“aethiopica” group = P. aethiopica and P. formosa (Austen); “rondani” group = P. elegans, P. rondani, P. rubiginosa, and P. umbratipennis stat. rev.). Molecular evidence also reveals a new character, the index of frons divergence, which is diagnostic for the two clades, and is thus a tool for separating previously indistinguishable females of P. aethiopica from P. rondani. Additionally, I show that some of the longest proboscid specimens, previously confused with P. rondani and P. aethiopica, are actually P. umbratipennis (Ricardo) stat. rev. P. rubiginosa, previously known only from Mozambique, is shown to occur in South Africa, and the male of this species is described for the first time. Furthermore, I show that the distribution of morphotypes within species with differing proboscis lengths is geographically structured, with long-proboscid species occurring only in the Albany Centre of Endemism.