Immature Stages of Pyraustidae
Detailed information on immature stages of Pyraustidae is being acquired. However, Gahan (1909) discussed Dicymolomia julianalis Wlk. that preys on eggs of the bagworm, Thyridopteryx ephemeraeformis Haw. in North America (Gahan 1909). As much as 30% of the bags were found infested, and a single larva consumed the entire egg contents. The cocoon is spun at the free end of the bag. Dicymolomia has the normal habit of being a scavenger in the heads of cattail (Typha sp.). Balduf (1937) believed that this species was not primarily predaceous, but that the eggs are destroyed incident to the preparation of a hibernaculum.