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. 2017 Sep 19;10:430. doi: 10.1186/s13071-017-2367-2

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Component parts of the proboscis. The proboscis of Glossina pallidipes separated into its three component parts: labrum, labium and hypopharynx. a Light microscopy. b SEM, dorsal view of labium. The labrum interlocks with the labium approximately 400 μm from its distal tip, so that a continuous food canal is formed. The tip of the hypopharynx lies beyond the tip of the labrum, but does not reach the tip of the proboscis formed by the labella