Pupa

·noun A genus of air-breathing land snails having an elongated spiral shell.

II. Pupa ·noun Any insect in that stage of its metamorphosis which usually immediately precedes the adult, or imago, stage.

pupa
pūpa (puppa), ae, f. [pupus]. I A girl , damsel , lass , Mart. 4, 20, 2; Aus. Idyll. 7, 2, 2...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
Semi pupa
·noun The young of an insect in a stage between the larva and pupa. ...

Webster's Dictionary of the English Language