A tent caterpillar is an example of a caterpillar that will be found in trees. The insect in question (Malacosoma spp) spends the larval stage developing and feeding inside unsightly webs which they build on tree branches.
The caterpillar for the Dasychira Pudibunda moth resembles a sponge. This caterpillar is yellow and from a distance looks like a very small sponge.
It sounds like you're describing a Bagworm moth caterpillar. Bagworms create protective cases made of silk and camouflaged with materials like twigs, leaves, and bark. The caterpillar moves around in its case, peeking out from both ends, and can emerge to feed and pupate.
a caterpillar.
Caterpillar
a saddleback caterpillar
a caterpillar will only eat the leaf it was born on so it depends on what kind of caterpillar it is.
bark of a tree look like a Flute
A caterpillar that, when in metamorphosis, cocoon looks like a walnut shell.
whats the comment
Yes some do but most of the time they need to be the same caterpillar kind
aero lol
This is what a painted apple moth caterpillar looks like and if you could send feed back i would be very happy