Plumose is a term used to describe certain insect antennae. The segments of plumose antennae have fine branches, giving them a feathery appearance. The term plumose derives from the Latin pluma, meaning feather.

Plumose is a morphological form of antennae found in some insect groups, including some of the true flies, such as mosquitoes, and moths.

Plumose is just one of many morphological forms of insect antennae.

See also:

Source: Borror and DeLong's Introduction to the Study of Insects, 7th Edition, by Charles A. Triplehorn and Norman F. Johnson