Curly-wing Flies pre-pack are supplied as eggs/castors - this must be kept warm to hatch into flies at home.! They will arrive to you as eggs and over a few days they will hatch out into flies.
 
Curly wing Flies are perrfect for larger Jumping Spiders, Mantis. But also are great for small gecko species, amphibians and tarrantulas. 

*PLEASE NOTE: In warmer weather flies may have hatched or be faster to do so.  We do not guarantee specific hatch times.