yeah, they got some long bristle hairs on their rear legs to help throw web better
but ive also noticed they dont necessarily spin web on them the way you expect, or at least i would expect
i fed mine which is still rather quite small and still juvenile a beetle about 2-3 times its size
it used the trap method to pull it up into its web, then just continually webbed only the stuck foot of the beetle
i was expecting it to try and web the whole thing, but it only webbed it so it couldnt break its leg free
then when the beetle would stop struggling to rest a bit, it would sneak in for a bite
it just sat there patiently, occasionally rewebbing the stuck foot, or injecting some more venom until the beetle finally died to the combination of exhaustion/venom