woollyadelgid

woolly a·del·gid (ə-dĕlʹjĭd) n.

Any of various aphidlike insects of the family Adelgidae that secrete a waxy or woolly covering and are destructive to conifers, especially hemlocks, spruces, and firs.

  [From New Latin Adelgidae, family name, from Adelgēs, type genus : perhaps Greek adēlos, hidden (a-, not; see a-¹ + dēlos, clear, visible; See dyeu- + -gēs, of unknown origin.]

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