. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Additional Trypetid Material in Collection of Museum. 13 separating them on account of the whitish bristles on the occipital border. This division, however, as seen in Bezzi's table of the species of Spheniscomyia, quite erroneously separates binaria Lw. from the three species mentioned ; the four undoubtedly belong to the same group, and may even be little more than variations of one species— senaria Bez., in particular, seems little more than a variety of binaria Lw. From an examination of a l
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Additional Trypetid Material in Collection of Museum. 13 separating them on account of the whitish bristles on the occipital border. This division, however, as seen in Bezzi's table of the species of Spheniscomyia, quite erroneously separates binaria Lw. from the three species mentioned ; the four undoubtedly belong to the same group, and may even be little more than variations of one species— senaria Bez., in particular, seems little more than a variety of binaria Lw. From an examination of a large series of specimens of binaria, qiiaternaria, and quinaria, the most that can be said is that in the two latter the occiptal bristles have a tendency to be whitish. A revised table of the Ethiopian species follows :— 1. (6) Scutellum with four bristles. 2. (3) Wings with a single hyaline indentation on fore border ; the four hyaline indentations on hind border broad and not in pairs sexmaculata Maeq. 3. (2) Wings with two approximated hyaUne indentations on fore border; the four posterior indentations short and paired. 4. (5) Three rounded hyaline spots in middle of wing; external posterior indentation not longer than anterior one, and ending at fourth vein ternaria Lw. 5. (4) No hyaline discal spots; the external posterior indentation longer, extending into submarginal cell .... capensis Eond. 6. (1) Scutellum with two bristles. 7. (8) Only one hyahne indentation on fore border and two on hind border ; three hyaline discal spots ; base of wing black ; halteres black compacta Bez. 8. (7) Two hyaline indentations (or spots) on fore border ; four or more on hind border; base of wing hyaline; one or more hyaline discal spots ; halteres whitish. 9. (10) Wings with two regular hyaline indentations on fore border; four, paired, indentations on hind border ; only one hyaline spot at base of discoidal cell ....... neavei Bez. 10. (9) Two irregular hyaline spots on fore border.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
