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. 2019 Jul 12;19(4):7. doi: 10.1093/jisesa/iez070

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© The Author(s) 2019. Published by Oxford University Press on behalf of Entomological Society of America.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Fig. 2. — Digestive tract of a male A. ludens with emphasis on foregut structures. 1. Labellum (LA), 2. Labial palps (LP), 3. Dorsal esophageal bulb (DEB), 4. Antenna (AN), 5. Brain (B), 6. Ventral nerve cord (VNC), 7. Thoracicoabdominal ganglion (TAG), 8. Crop duct (CD), 9. Crop filled with a sugar and protein solution, 10. Salivary gland ducts (SGD), 11. Salivary glands (SG), 12. Terminal ball of convoluted salivary gland tubules, 13. Proventriculus/cardia (CAR), 14. Midgut (MG), 15. Malpighian tubules (MT), 16. Hindgut (HG), 17. Rectum with papillae.