hemipneustic

Etymology
From and.

Adjective

 * 1)  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.
 * 2) * 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.