#larval case

[orofeaiel]

Caddisfly larval case made of silk and sand

[violetcatt]

An Extra Fancy Bagworm Case

...built by a Bagworm Moth larva.  Look at how the case is attached to the denuded branch by a strand of silk wrapped around and around.  If we could see inside we would see that the interior is lined with soft silk that ends in a sort of a turtleneck opening that the larva can quickly tug shut.