- an appendage attached to an oral part and serving as an organ of sense in insects, crustaceans, etc.
Origin of palpus
1805–15; < New Latin, special use of Latin palpus a stroking, caress, palm of the hand; akin to feel
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for palpus
The mouth-parts in this genus are much as in Tomocerus, the maxillæ ending in a lacinia and palpus.Our Common Insects
Alpheus Spring Packard
Each maxilla bears a slender feeler or palpus composed of five segments.Elementary Zoology, Second Edition
Vernon L. Kellogg
When you touch him, he draws up slowly one leg after another, or moves a palpus feebly.Children's Literature
Charles Madison Curry
In x-notata (fig. 435) the palpus is as long as the cephalothorax, and the tarsus and palpal organ small and round.
In montana (fig. 435a) the palpus is still shorter, the tibia thicker, and the tarsus and palpal organ larger.