Gelechiidae

Gelechiidae
Arla tenuicornis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Gelechioidea
Family: Gelechiidae
Stainton, 1854
Subfamilies

See text

Synonyms

Brachmiinae
Deoclonidae
Gelechiadae (lapsus)
Physoptilinae
(but see text)

The Gelechiidae are a family of moths commonly referred to as twirler moths or gelechiid moths. They are the namesake family of the huge and little-studied superfamily Gelechioidea, and the Gelechiidae's relationships with and delimitation against their relatives have been subject to considerable dispute. These are generally very small moths with narrow, fringed wings. The larvae of most species feed internally on various parts of their host plants, sometimes causing galls. Douglas-fir (Pseudotsuga) is a host plant common to many species of the family, particularly of the genus Chionodes which is consequently more diverse in North America than usual for Gelechioidea.[1]

By the late 20th century, over 900[2] genera with altogether more than 4,500 species were placed here, with about 650 known from North America alone. While these figures are certainly outdated due to the many of reevaluations of Gelechioidea and new descriptions of twirler moths, they still serve to give an impression of the enormous biodiversity contained in this important family.

Being abundant, fecund plant-eaters, many species are agricultural pests, including:

The voracious habits of their larvae make twirler moths suitable for biological control of invasive plants. The spotted knapweed seedhead moth (Metzneria paucipunctella), for example, is used to control spotted knapweed (Centaurea maculosa) in North America. Even more subtle plant-host interactions have been discovered in these moths. The Guatemalan potato moth may become a harmful pest. If it is not entirely eradicated from a potato field, but allowed to infest some plants (up to around 20% in one study[3]), the overall harvest will increase, and include an increased number of extremely large tubers.

Taxonomy and systematics

Compared to the other massively diverse Gelechioidea families – Coleophoridae (case-bearers) and Oecophoridae (concealer moths) – the systematics of the Gelechiidae are far less contentious. The "Deoclonidae", sometimes treated as a full gelechioid family, seem to be nothing other than a specialized offshoot from within the Gelechiidae, and are here included in the present family; some authors differ, however, and ally at least some of these genera with the Autostichinae and/or Symmocidae. On the other hand, the Schistonoeidae (scavenger moths) are preliminarily considered a distinct family here.[4][5][6][7][8]

Of the subfamilies traditionally accepted for the Gelechiidae, only three were maintained for some time pending further information; at least one other, the Physoptilinae, were suggested to also be valid. But numerous genera of twirler moths – including most of the former "Deoclonidae" and also the proposed Physoptilinae – were of undetermined affiliation at that moment.[6][7] Later studies, including a 2013 molecular analysis of the Gelechiidae, list the following subfamilies:
Subfamily Anacampsinae Bruand, 1850
Subfamily Anomologinae Meyrick, 1926
Subfamily Apatetrinae Meyrick, 1947
Subfamily Dichomeridinae Hampson, 1918 (formerly including Chelariinae, which is now placed in Anacampsinae)
Subfamily Gelechiinae Stainton, 1854
Subfamily Physoptilinae Meyrick, 1914
Subfamily Thiotrichinae Karsholt, Mutanen, Lee & Kaila, 2013

Genera incertae sedis

References

  1. ↑ Donald J. Borror, Charles A. Triplehorn & Norman F. Johnson (1989). An Introduction to the Study of Insects (6th ed.). Fort Worth, Texas: Saunders College. p. 800. ISBN 0-03-025397-7.
  2. ↑ The Natural History Museum of London website offers details on 911 genera belonging to the Gelechiidae family. The list of these is accessible here
  3. ↑ "Mottenspucke verbessert Ernte" [Moth spit improves yield]. Eigenarten der Natur (in German). N-TV. June 3, 2010.
  4. ↑ R. W. Hodges (1999). "The Gelechioidea". In N. P. Kristensen. IV – Arthropoda: Insecta. Part 35: Lepidoptera, Moths and Butterflies 1. Handbuch der Zoologie. Berlin & New York: Walter de Gruyter. pp. 131–158. ISBN 3-11-015704-7.
  5. ↑ Christopher O'Toole, ed. (2002). Firefly Encyclopedia of Insects and Spiders. ISBN 1-55297-612-2.
  6. 1 2 Australian Biological Resources Study (October 9, 2008). "Gelechiidae". Australian Faunal Directory. Retrieved April 30, 2010.
  7. 1 2 "Gelechiidae". Fauna Europaea. December 22, 2009. Retrieved April 30, 2010.
  8. ↑ "Gelechiidae". Tree of Life Web Project. May 1, 2008. Retrieved April 30, 2010.
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