Coleophoridae

Bruand, 1850

case-bearers, casebearing moths, case moths

Subfamily Guides

Coleophorinae(case-bearer moths)

is a of small in the superfamily Gelechioidea, comprising over 1,000 described . are slender with fringed wing margins. Larvae are known as case-bearers: they construct portable silken cases, often incorporating plant material or , which they carry and rebuild as they grow. The family is most diverse in temperate regions of the Northern Hemisphere, particularly the Palearctic. Approximately 95% of species are placed in the Coleophora, though this classification remains problematic due to unresolved phylogenetic relationships.

Coleophora deauratella by (c) Matt Muir, some rights reserved (CC BY), uploaded by Matt Muir. Used under a CC-BY license.

Coleophora cornella by (c) Chris Friesen, some rights reserved (CC BY), uploaded by Chris Friesen. Used under a CC-BY license.

Coleophorinae by (c) Steve Kerr, some rights reserved (CC BY), uploaded by Steve Kerr. Used under a CC-BY license.

Pronunciation

How to pronounce Coleophoridae: /ko.leˈɔ.fɔ.rɪ.deɪ/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

are small, slender with narrow wings bearing a fringe of hairs along the margins. Larvae are distinguished by their portable protective cases, constructed from silk and often incorporating plant material or hardened fecal matter; cases are discarded and rebuilt at each . Unlike Psychidae (bagworm moths), female have fully developed wings and leave their cases to pupate.

Images

Habitat

Temperate regions of the Northern Hemisphere, particularly the Palearctic. Found in diverse terrestrial including grasslands, woodlands, and scrub; individual often associated with specific plants. Some species occur in human-modified environments and have been observed in houses.

Distribution

Represented on all continents but most diverse in temperate areas of the Northern Hemisphere. Common in the Palearctic; rare in sub-Saharan Africa, South America, and Australia. Native to northern Eurasia based on current distribution patterns.

Diet

Larvae feed internally on leaves, flowers, or seeds of plants initially, then externally after emerging from plant tissue. Specific host plants vary by .

Life Cycle

laid on plants. Larvae hatch and initially feed internally within plant tissue. Upon emerging to feed externally, larvae construct portable silken cases that are enlarged and replaced at each . occurs outside the larval case; females leave their cases to pupate, unlike Psychidae. Multiple per year in some .

Behavior

Larvae carry and maintain portable protective cases throughout development, discarding and rebuilding them as they grow. are and attracted to light.

Ecological Role

Larvae function as herbivores on diverse plant . Prey for including some Vespidae such as Parancistrocerus perennis, which hunts caterpillars to provision nests.

Human Relevance

Some are agricultural or horticultural pests. The pecan nut casebearer (Acrobasis nuxvorella, Pyralidae—historically confused with in common naming) is a significant pecan pest, though true Coleophoridae include species affecting various crops and ornamental plants. Larval case-bearing makes them distinctive in ecological studies and insect collections.

Similar Taxa

Psychidae (bagworm moths)Larvae also construct portable cases, but Psychidae females are typically neotenous with reduced or absent wings and pupate within their cases, unlike where females have fully developed wings and leave cases to pupate. Psychidae belong to superfamily Tineoidea rather than Gelechioidea.
Acrolophidae (grass tube moths)Formerly classified within Tineidae; larvae construct silken tubes at grass bases. Distinguished from by case construction location (soil/ground level vs. on plants) and taxonomic placement in different superfamilies.
Ethmia (formerly in Coleophoridae) transferred to Depressariidae based on revised phylogenetic understanding; distinguished by upturned palps resembling horns between .