adelgid

[uh-del-jid]
noun
  1. any of various homopterous insects of the family Adelgidae, as Adelges abietis (spruce gall aphid) and Pineus pinifoliae (pine leaf aphid), that feed and form galls on conifers.

Origin of adelgid

< New Latin Adelgidae, equivalent to Adelg(es) a genus name (apparently < Greek ádel(os) unseen, invisible (a- a-6 + dêlos visible, clear) + New Latin -ges < ?: unexplained by the name's originator) + -idae -id2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018