Are these Insect larva growing on shrubs?

Question

I have recently moved to another house and on these shrubs there seems to be wooden cocoon like things clinging to the leaves. Inside are a lot of little white maggot looking larva.

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Answer 1

This is likely Bagworms.
This article will help you.

https://www.gardeningknowhow.com/plant-problems/pests/insects/treatment-bagworms.htm