Img 1 A young, white cat flea pupa inside its silk cocoon, which has been torn open.
Img 2 A mature, brown flea pupa almost ready to emerge as an adult.
Img 3 Occasionally cat flea larvae pupate without cocoons. They’re called ‘naked pupa’.
Img 4 Most of the time, flea pupae are camouflaged with sticky, silken cocoons.