Usually mouthparts. the appendages surrounding or associated with the mouth of arthropods.
Origin of mouthpart
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any of the paired appendages in arthropods that surround the mouth and are specialized for feeding
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Any of the parts of the mouth of an insect or other arthropod, especially a part or organ used for a specific way of feeding.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.