Trachypepla contritella
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Oecophoridae
Genus: Trachypepla
Species:
T. contritella
Binomial name
Trachypepla contritella
(Walker, 1864)
Synonyms
  • Gelechia contritella Walker, 1864
  • Trachypepla nyctopis Meyrick, 1883

Trachypepla contritella, the Kiwi Enigma, is a species of moth in the family Oecophoridae.[1] Originally endemic to New Zealand this species can be found throughout that country. However, from 2012 this species has been also been recorded in the United Kingdom. The preferred habitat of T. conritella is New Zealand native forest and larvae of this species are litter leaf feeders. Adults are on the wing from November to February in New Zealand and are attracted to light.

Taxonomy

This species was first described by Francis Walker in 1864 using a specimen collected by T. R. Oxley and named Gelechia contritella.[2] In 1915 Edward Meyrick placed this species in the genus Trachypepla and synonymised Trachypepla nyctopis with this species.[3] However J. S. Dugdale has raised doubts about this synonymisation as there are differences in the genitalia of specimens collected at the type localities of these species.[4] George Hudson in his 1928 book The butterflies and moths of New Zealand described and illustrated this species.[5] The female holotype specimen, collected in Nelson, is held at the Natural History Museum, London.[4]

Description

Illustration of male by Hudson.

Walker described the female of the species as follows:

Female. Cinereous. Palpi much longer than the breadth of the head, slightly speckled with black ; third joint lanceolate, much shorter than the second. Antennae slender, much shorter than the fore wings. Legs slender. Wings moderately broad, hardly acute. Fore wings minutely speckled with black, with a broad whitish middle band, which is dilated hindward and is incompletely bordered with black ; an exterior black oblique line, acutely angular in front, where it is abbreviated ; exterior border slightly convex, very oblique. Hind wings shining, slightly tinged with aeneous; fringe long. Length of the body 3 lines ; of the wings 8 lines.[2]

Hudson described this species as follows:

The expansion of the wings is about 58 inch. The forewings are elongate with the apex rounded and the termen very oblique; pale purplish-grey; there is a conspicuous outwards curved thick blackish transverse line with two tufts of raised scales at about 14, rather indistinct on the costa and dorsum; beyond this there is usually a paler central area, another oblique transverse line is situated on the costa at about 12 and encloses two tufts of raised scales; there is a wavy transverse line from the costa at 34 to the tornus and a series of indistinct terminal dots. The hind-wings are greyish-ochreous, darker towards the apex.[5]

This species is variable in both the richness of the ground colour, the markings on its forewings and the paler central area on the forewings.[5] Hudson was of the opinion that the colouration of this moth imitated dull grey coloured lichens.[5]

Distribution

This species was originally endemic to New Zealand and has been observed throughout that country.[6][5] Since the 2010s this species has been observed in the United Kingdom.[7] It was first observed at Eaton Ford in 2012, and has subsequently also been observed in Huntingdonshire.[8]

Habitat and hosts

T. contritella in native forest.

T. contritella inhabits native forest and in the South Island of New Zealand is common in beech forest.[5] The larvae of this species feed on leaf litter.[9] This species also feeds and pupates on lichen species in the genus Usnea.[10]

Behaviour

Adults are on the wing in New Zealand in from November to February and are attracted to light.[11]

References

  1. Gordon, Dennis P., ed. (2010). New Zealand inventory of biodiversity: Kingdom animalia: chaetognatha, ecdysozoa, ichnofossils. Vol. 2. p. 462. ISBN 978-1-877257-93-3. OCLC 973607714. OL 25288394M. Wikidata Q45922947.
  2. 1 2 Francis Walker (1864), List of the Specimens of Lepidopterous Insects in the Collection of the British Museum, Part XXIX. - Tineites, London, p. 657, Wikidata Q110191308{{citation}}: CS1 maint: location missing publisher (link)
  3. E. Meyrick (12 July 1915). "Revision of New Zealand Tineina". Transactions and Proceedings of the New Zealand Institute. 47: 217. ISSN 1176-6158. Wikidata Q63123349.
  4. 1 2 John Stewart Dugdale (23 September 1988). "Lepidoptera - annotated catalogue, and keys to family-group taxa". Fauna of New Zealand. Department of Scientific and Industrial Research. 14: 106. doi:10.7931/J2/FNZ.14. ISSN 0111-5383. Wikidata Q45083134.
  5. 1 2 3 4 5 6 George Vernon Hudson (1928), The butterflies and moths of New Zealand, Illustrator: George Hudson, Wellington: Ferguson and Osborn Limited, p. 285, LCCN 88133764, OCLC 25449322, Wikidata Q58593286
  6. "Trachypepla contritella (Walker, 1864)". www.nzor.org.nz. Retrieved 2022-03-04.
  7. "Trachypepla contritella". www.ukmoths.org.uk. Retrieved 2022-05-27.
  8. "Beds & Northants Branch of Butterfly Conservation Branch Members Day and AGM 2022" (PDF). www.beds-northants-butterflies.org.uk. 1 May 2022. Retrieved 27 May 2022.
  9. Brian H. Patrick (1994), Coastal butterflies and moths of Wellington and South Wairarapa. (PDF), Wikidata Q110426707, archived from the original (PDF) on 13 December 2021
  10. Hoare, Robert J. B. (2014). A photographic guide to moths & butterflies of New Zealand. Olivier Ball. Auckland. p. 34. ISBN 978-1-86966-399-5. OCLC 891672034.{{cite book}}: CS1 maint: location missing publisher (link)
  11. Alfred Philpott (1917). "A list of the Lepidoptera of Otago". Transactions and Proceedings of the New Zealand Institute. 49: 232. ISSN 1176-6158. Wikidata Q63958657.
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