nCorrodentiaan order of insects: includes booklice and bark-lice
Century Dictionary and Cyclopedia
corrodentiaA group of neuropterous (pseudo-neuropterous) insects. They have the following technical characteristics: the antennæ many-jointed; the wings with few nervures, sometimes quite without transverse venation; the head strongly mandibulate; and the tarsi two- or three-jointed. The limits of the group vary; it contains the Psocidæ or book-lice, and the Embiidæ, to which some authors add the Termitidæ or white ants, by others made type of a group Isoptera. (See these words.) The best-known representative of the group is the death-watch, Atropos (or Troctes) pulsatorius, a pest of insect-collections. By some the Corrodentia are regarded as an order composed of the Termitidæ, Psocidæ, and Mallophaga.
Psocoptera: = Corrodentia; q.v.
"Explanation of Terms Used in Entomology" by John. B. Smith