Caterpillars or something else?

Caterpillars or something else?

Observation - Caterpillars or something else?. Description: I've never seen this before, black and white caterpillar type things seemed to have hatched out and were making their way out of the spider web type stuff. There were several little colonies near each other, some only had the black ones.

I've never seen this before, black and white caterpillar type things seemed to have hatched out and were making their way out of the spider web type stuff. There were several little colonies near each other, some only had the black ones.