Bagworm moths – Stick Cocoons
June 25, 2010 – 1:00 pmHave you seen these around your house and garden?
These are the cocoons of the bagworm moths. These odd little creatures are known for their cunning camouflage. Unlike most moths that spin a pure silken cocoon, bagworms are trash collectors, gathering dead leaves and sticks which they incorporate into a shell-like cover. From the moment they hatch, they begin coating themselves in debris, providing a perfect camouflage from most predators.
Throughout their larval and pupal stages, these bagworm (or caseworm) moths crawl around your garden in search of plant food. Rarely a problem to the average Charleston gardener, they do very little damage to plants, preferring lichen and mosses to most living plant tissue. In most cases, you won’t even notice their existence until they affix themselves permanently to the underside of your deck railing or wooden fence post.

There are 600 different species of bagworms in the Psychidae family of Lepidoptera (butterflies and moths)
This little guy actually chose to hang out along my nylon-coated string bean support lines. Ranging in size from 1/2 – 3 inches long, once you recognize bagworm cocoons, you will begin noticing them all over your yard.
Here are some interesting facts about bagworms that you probably never even knew you wanted to know:
- In our area they are rarely pests except to citrus trees. If seen, they can easily be controlled by removing them from the bark.
- In most cases, it is only the male who emerges from the cocoon and then just long enough to mate and die.
- Many female bagworm moths lack wings and remain in their cases where the males fertilize them. Some species even die with the eggs still inside of them; their bodies providing the first food source for their offspring.
- Like other caterpillars, bagworms are either generalists or specialists. In other words, some eat only 1 host plant while others graze on a variety of plants as well as the occasional microscopic insect like scale or psocids.
- In the Southeastern Unites States, June and July are peak season for spotting bagworms.
- North American bagworms come in three types: snail, evergreen and grass. Snail bagworms look just like fuzzy round snails. Grass bagworms appear as dried twiglets and evergreen bagworms look like tiny pinecones.















