What are often referred to as Tent Caterpillars, are actually the larvae of serval different butterfly and moth species. Tent Caterpillars can take over a tree in a very short time by feeding on different parts of the tree, such as the bark, leaves and wood. The Tent Caterpillars make web or tent like structures in the trees where they are feeding to protect themselves against predators and the elements. Normally when tent caterpillars are discussed there are four main species; the Eastern Tent Caterpillar, Western Tent Caterpillar, Forest Tent Caterpillar and the Fall Webworm.
In this photo you can see the Tent Caterpillars in the Corner Garden on our Crab Apple tree.
There are several methods for removing Tent Caterpillars, including cutting off the affected areas and disposing of them and using pesticides. There are also organic methods that are safe for your family and pets. The link below has several proven organic methods for removing Tent Caterpillars.
https://www.planetnatural.com/pest-problem-solver/tree-pests/tent-caterpillar-control/