Bagworm moth

Bagworm moths
Adult of an undescribed Iphierga species from Aranda (Australia)
"Bag" of unidentified species
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Tineoidea
Family: Psychidae
Boisduval, 1828
Diversity[1]
10 subfamilies, 241 genera and 1,350 species
Bag of Metura elongatus which can grow to more than 120 mm (4.7 in) in length
Bagworm moth caterpillar locomotion

The Psychidae (bagworm moths, also simply bagworms or bagmoths) are a family of the Lepidoptera (butterflies and moths). The bagworm family is fairly small, with about 1,350 species[2] described. Bagworm species are found globally, with some, such as the snailcase bagworm (Apterona helicoidella), in modern times settling continents where they are not native.

Another common name for the Psychidae is "case moths", but this is just as well used for the case-bearers (Coleophoridae). The names refer to the habits of caterpillars of these two families, which build small protective cases in which they can hide. The bagworms belong to the superfamily Tineoidea, which is a basal lineage of the Ditrysia (as is Gelechioidea, which includes case-bearers). This means that the bagworms and case-bearers are only as closely related to each other as either is to butterflies (Rhopalocera).

Most bagworms are inoffensive to humans and inconspicuous; some are occasional nuisance pests. However, a few species can become more serious pests, and have caused significant damage e.g. to wattle (Acacia mearnsii) in South Africa and orange (Citrus × sinensis) in Florida. If detected early, picking the cases from the trees while in their pupa stage is an effective way to check an infestation; otherwise, insecticides are used. One bagworm species, the fangalabola (Deborrea malgassa) of Madagascar, is in some places encouraged to breed on wattle trees, because its pupae are collected as a protein-rich food.

  1. ^ Cite error: The named reference Nieukerken et al 2011 was invoked but never defined (see the help page).
  2. ^ Sobczyk, Thomas (2011). World Catalogue of Insects: Psychidae (Lepidoptera). UWA Publishing. ISBN 978-87-88757-98-9.[page needed]