Abstract
IN NATURE, August 22, 1907, I reported the discovery of a tsetse-fly (Glossina) in the Miocene shales of Florissant, Colorado. In going over the materials collected in the same locality in 1908, I find a second species of the same genus. It is preserved showing the lateral aspect, the abdomen arched dorsally, and the proboscis evident, though imperfect. It is about 10mm. long, the wing 7 mm., thus much smaller than G. oligocena. The venation is perfectly typical for Glossina, but the first basal cell bulges less subapically than in G. oligocena, its maximum breadth or depth being only 323 micromillimetres. The vein bounding the outer side of the discal cell has a double curve, as in the Œstridæ.
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COCKERELL, T. Another Fossil Tsetse Fly. Nature 80, 128 (1909). https://doi.org/10.1038/080128d0
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DOI: https://doi.org/10.1038/080128d0
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