| 21. | His long term aim to reach Tsetse fly.
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| 22. | Larger flies such as tsetse fly and screwworm cause significant economic harm to cattle.
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| 23. | Sleeping sickness is fatal unless treated and is spread in humans by the tsetse fly.
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| 24. | Most tsetse flies are physically very tough.
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| 25. | Sleeping sickness begins with a tsetse bite leading to an inoculation in the subcutaneous tissue.
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| 26. | This ritual consisted of mothers killing the tsetse flies and sprinkling them on horned melon.
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| 27. | Sekeletu arranged that the survivors'party be guided into tsetse fly country and abandoned.
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| 28. | From June to December 1923, he was attached to the Nigerian Tsetse Investigation Staff.
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| 29. | Local workers were employed to catch tsetse fly, using black umbrellas to attract them.
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| 30. | The animals that Tilley pursues at night have lived with tsetse flies for millions of years.
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