Also tzetse, tzetze, (erron. tse). [Sechwana (i.e., Bechuana language) tsetse.] A dipterous insect (Glossina morsitans, of the family Tabanidæ), abundant in parts of tropical and southern Africa; its bite is often fatal to horses and other domestic animals. Also applied to other species of Glossina. More fully tsetse-fly.

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1849.  E. E. Napier, Excurs. S. Africa, II. 396. [Gordon Cumming’s] horses were killed either by lions or horse sickness, and the fly called ‘tzetse.’ All his oxen were killed by this insect.

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1850.  R. G. Cumming, Hunter’s Life S. Afr. (1902), 139/2. Four [horses] that are bitten with ‘tsetse,’ and must die in a week or two. Ibid. (1865), Last Jrnls., i. (1873), 15. The people … say there are no tsetse flies.

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1889.  L. V. Sheldon, S. Africa, 94. The Tse fly stings their horses.

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[1895.  J. Brown, Secwana Dict., Tsetse, a fly destructive to cattle.]

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1898.  [see TRYPANOSOMA].

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1904.  Brit. Med. Jrnl., 20 Aug., 368. Sleeping sickness is conveyed, at least in Uganda, by that species of tsetse fly we know as Glossina palpalis.

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