hemipneustic

From ἡμι- (hēmi-, “half”) and πνευστικός (pneustikós).

hemipneustic (not comparable)

1. (entomology) in tracheal systems, having at least one functional pair of spiracles fewer than than the ten open pairs in holopneustic tracheal systems; hemipneustic systems occur for example, in the larvae of some Lepidoptera.
   • 1977 O.W. Richards & R.G. Davies Imms' general textbook of entomology pub. Methuen

     Hemipneustic Respiratory Systems... are prevalent among insect larvae and are derived from the holopneustic type through one or more pairs of spiracles becoming non-functional.