empodium
/ɛmˈpəʊdɪəm/Chiefly Entomology
noun
In the feet of flies and certain other arthropods: a structure in the form of a bristle or pad located between the tarsal claws.
Origin
Mid 19th century; earliest use found in William Shuckard (?1803–1868), entomologist. From scientific Latin empodium from classical Latin em- + scientific Latin -podium.