The
bagworm (
Thyridopteryx) is a
moth that spins its cocoon all its
larval life, decorating it with bits of
juniper,
cedar, and other such
conifers. When mature, it wraps
silk around a branch, hangs from it, and
pupates[?]. The male emerges and flies on transparent wings (
Greek thuris window +
pterux wing) smelling for a female. The female merely opens a hole in her cocoon at the tail end. Later her pupal case can be found, full of yellow stuff, which is the remains of eggshells.