Rectal insectoid
Rectal insectoids were a species of parasitic insectoids that apparently entered the humanoid body through the rear end, or perhaps nested there.

While en route to Tulgana IV on one of the ' shuttles, Ensign Beckett Mariner and K'orin were talking about rectal insectoids; among other things, to the annoyance of Ensign Bradward Boimler. ()

Animals