Pistol Casebearer – Coleophora malivorella

Pistol Casebearer – Coleophora malivorella Common Name: Pistol Casebearer Latin Name: Coleophora malivorella Appearance:  The Pistol Casebearer moth is a tiny insect with wings that are about 8–11 mm long. The front wings are a greyish-brown color with unique marks, and the back wings are lighter. The most noticeable thing about this species is its larval case, which looks like a small gun barrel, which is how it got its popular name. The case is designed to protect the pup and is made from silk and plant matter. Host Plants: The Pistol Casebearer feeds mainly on apple trees (Malus species), as shown by its specific Latin name, “malivorella,” which is taken from the apple tree genus name, “Malus.” Territory: The Pistol Casebearer can be found throughout North America, particularly in areas where its host plants, such as apple trees, are prevalent. Damages caused by Pistol Casebearer: The Pistol Casebearer larval stage is responsible for host plant damage. Larvae build cases and feed on leaves, leaving distinctive “mines” or tracks on the foliage. Individual larvae usually cause minor damage, but extensive infestations can induce defoliation, which can weaken the host plant and potentially affect its overall health. Life History and Habits: Egg Stage: The Pistol Casebearer’s life cycle begins with the female moth laying eggs on the host plant’s leaves. Typically, these eggs are laid singly. Larval Stage: After hatching, the larva builds a tiny, tubular case out of silk and plant material. It carries this casing with it as it feeds on the leaves of the host plant. As it grows, the larva’s case will expand and change. This stage might last from a few weeks to several months. Pupal Stage: When the larva is fully developed, it shuts itself within its case and pupates. Before the adult moth emerges, the pupal stage lasts for a while. Adult Stage: After emerging from the pupal case, the adult Pistol Casebearer is ready to breed. Adult moths are often active at night and are drawn to lighting.