From two to four moults occur, after which the " pronymph " stage is reached, which in the insect is moderately active and possesses wing-rudiments reaching to the second abdominal Segment.
After eating the contents of the egg, the larva moults and becomes a fleshy grub with short legs and with paired spiracles close to the dorsal region, so that, as it floats in and devours the honey, it obtains a supply of air.
There it feeds first as an internal parasite of the waspgrub, then bores its way out, moults and devours the wasp larva from outside.
During post-embryonic development - no insect being hatched with the smallest external rudiments of those organs - and on the necessity for successive castings or " moults " (ecdyses) of the cuticle.
Growth is accompanied by a succession of moults, the spider emerging from its old skins by means of a fracture which extends along the front and sides of the cephalothorax just beneath the edge of the carapace.