Izatha psychra

Nationally Endangered (NZ TCS)[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Oecophoridae
Genus: Izatha
Species:
I. psychra
Binomial name
Izatha psychra
(Meyrick, 1883)[2]
Synonyms
  • Aochleta psychra Meyrick, 1884

Izatha psychra is a species of moth in the family Oecophoridae. It is endemic to New Zealand. It is classified as Nationally Endangered by the Department of Conservation. In 2020 it was feared that this moth was extinct as a result of a fire at the Pukaki Scientific Reserve, the last known locality of this species. However a 2021 survey found I. psychra present in the small portion of the reserve that was not damaged by the fire.

Taxonomy

This species was first described by Edward Meyrick and named Aochleta psychra in 1884 using a male specimen collected by John Enys at Porters Pass.[3][4] This type specimen is held at the Natural History Museum, London.[4][5] George Vernon Hudson repeated Meyricks description in his 1928 publication The Butterflies and Moths of New Zealand.[6] In 1988 John S. Dugdale assigned Aochleta psychra to the genus Izatha.[4] Neither the larva nor the female of this species are known or have been described.[7]

Description

Meyrick described the species as follows:

Male. — 21 mm. Head and thorax grey-whitish, sprinkled with fuscous- grey. Palpi grey- whitish, mixed with fuscous, basal half of second joint dark fuscous externally, terminal joint with a slender dark fuscous ring above middle. Antennas grey. Abdomen grey-whitish. Legs dark- fuscous, posterior tibiae with grey-whitish hairs, all tarsi with obscure whitish rings at apex of joints. Forewings elongate, slightly dilated, costa gently arched, apex obtuse, hindmargin oblique, nearly straight ; whitish, irregularly irrorated with grey and fuscous scales ; these tend to form suffused markings, a spot on middle of inner margin, another above anal angle, a narrow suffusion along posterior half of costa, and an apical patch ; a small cloudy darker spot towards hindmargin in middle ; a minute black dot in disc at 1⁄3, another slightly above it in middle, and a very small blackish ocellus in disc at 2⁄3 : cilia whitish, with two cloudy grey lines. Hindwings whitish ; cilia whitish, with two faint grey lines.[3]

It is possible to confuse this species with some of the greyish coloured species within the genus Tingena.[7] However I. psychra can be distinguished as it lacks the antennal pecten of the Tigena species.[7]

Distribution

This species is endemic to New Zealand,[2][8] and has only been found in the southern half of the South Island. I. psychra is only known from two localities, its type locality of Porters Pass where it has not been seen since the 19th century, and the small Pukaki Scientific Reserve near Lake Pukaki in the Mackenzie Basin.[7]

Ecology and habitat

Male adults are on the wing from January to February.[7] In the one remain site where this species is known to exist, the Pukaki Scientific Reserve, the habitat is shrubland.[7] The Pukaki Scientific Reserve was significantly damaged by fire in August 2020 and for a time fears were held that this may have resulted in the extinction of the species.[9] However a survey completed in 2021 caught two adult males of this species, indicating its continued existence.[9]

Host species

The host species of this moth are unknown,[7] however larvae are likely to feed on dead wood.[10]

Conservation status

Despite being given a level of protection by being classified as a Scientific Reserve, the lone shrubland site inhabited by I. psychra is vulnerable to wilding pine invasion and fire.[7] As a result, this species has been classified under the New Zealand Threat Classification system as being Nationally Endangered.[1] As at May 2021 conservation work is being undertaken to help protect the habitat of this moth after the devastating August 2020 fire at the reserve.[9]

References

  1. 1 2 Hoare, R.J.B.; Dugdale, J.S.; Edwards, E.D.; Gibbs, G.W.; Patrick, B.H.; Hitchmough, R.A.; Rolfe, J.R. (2017). Conservation status of New Zealand butterflies and moths (Lepidoptera), 2015 (PDF). Wellington, New Zealand: New Zealand Department of Conservation. p. 6. ISBN 9781988514383.
  2. 1 2 "Izatha psychra (Meyrick, 1883)". www.nzor.org.nz. Landcare Research New Zealand Ltd. Retrieved 2 May 2018.
  3. 1 2 Meyrick, Edward (1884). "On New Zealand Micro-Lepidoptera". Transactions and Proceedings of the Royal Society of New Zealand. 16: 1–49. Retrieved 8 April 2018.
  4. 1 2 3 Dugdale, J. S. (1988). "Lepidoptera - annotated catalogue, and keys to family-group taxa" (PDF). Fauna of New Zealand. 14: 96. Archived from the original (PDF) on 2019-01-27. Retrieved 2018-05-02 – via Landcare Research New Zealand Ltd.
  5. ↑ "24525bce-273f-4e41-9b7c-a23fbc6a2da4 - Izatha psychra Meyrick". data.nhm.ac.uk. 2021-01-30. Retrieved 2021-03-06.
  6. ↑ Hudson, G. V. (1928). The Butterflies and Moths of New Zealand. Wellington: Ferguson & Osborn Ltd. p. 277. Archived from the original on 2020-09-28. Retrieved 2018-05-02.
  7. 1 2 3 4 5 6 7 8 Hoare, Robert J. B. (2010). "Izatha (Insecta: Lepidoptera: Gelechioidea: Oecophoridae)" (PDF). Fauna of New Zealand. 65: 1–201. Archived from the original (PDF) on 2019-01-26. Retrieved 2018-05-02.
  8. ↑ Gordon, Dennis P., ed. (2010). New Zealand inventory of biodiversity: Kingdom animalia: chaetognatha, ecdysozoa, ichnofossils. Vol. 2. p. 463. ISBN 978-1-877257-93-3. OCLC 973607714. OL 25288394M. Wikidata Q45922947.
  9. 1 2 3 Allott, Amber (2021-03-05). "Narrow escape for critically endangered Canterbury moth". Stuff. Retrieved 2021-03-06.
  10. ↑ Patrick, Brian; Dugdale, John S. (2000). Conservation status of the New Zealand Lepidoptera (PDF). Wellington, New Zealand: Department of Conservation. p. 28. ISBN 0478218672.
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