Helastia christinae

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Helastia christinae
Helastia christinae female.jpg
Female
Helastia christinae male.jpg
Male
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Geometridae
Genus: Helastia
Species:
H. christinae
Binomial name
Helastia christinae
Craw, 1987 [1]

Helastia christinae is a moth of the family Geometridae. [2] It was first described by Robin C. Craw in 1987. This species is endemic to New Zealand and has been confirmed as being observed at Dunedin, and the Central Otago and Otago Lakes areas. H. christinae inhabits subalpine to lowland areas frequenting river banks and stream sides. The food source for the larvae of this species are lichens. The adults of this species are on the wing in October to December. They are nocturnal and are attracted to light. Adult moths can be distinguished from similar appearing species in the genus Helastia as they have a "conspicuous transverse grey-ish white median band on the upper side of the forewing".

Contents

Taxonomy

This species was first described by Robin C. Craw in 1987 using specimens collected by J. S. Dugdale at Roaring Meg Creek, Kawarau Gorge in Central Otago. [3] [4] The male holotype specimen, collected in November, is held at the New Zealand Arthropod Collection. [4] This species was named in honour of Christine Patrick, the first wife of the New Zealand lepidopterist Brian Patrick. [3] [5]

Description

Male holotype of H. christinae. Helastia christinae male holotype.png
Male holotype of H. christinae.

Craw described this species as follows:

Small to medium sized (r.f.l. 9-12mm) triangular forewing. Upper side forewing greyish green with light to dark grey and yellowish-ochreous wavy transverse lines ; conspicuous transverse greyish white median band with black to brown discal spot. Male  antennae bipectinated. [3]

H. christinae can be mistaken for H. alba , H. mutabilis and H. plumbea but H. christinae has a "conspicuous transverse grey-ish white median band on the upper side of the forewing" that distinguishes it from these other species. [3]

Distribution

H. christinae is endemic to New Zealand. [6] [1] H. christinae has been observed in the South Island at Dunedin and in the Central Otago and the Otago Lakes areas. [3] Craw states H. christinae may be present in other parts of the South Island but that these records need further research to confirm the presence of this species. [3]

Habitat and host species

This species inhabits subalpine to lowland areas, frequenting river banks and stream sides. [3] The larvae of this species eat lichens. [7]

Behaviour

Adults of this species are on the wing in October to December. [8] Adults are nocturnal and are drawn to light. [3] [9]

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References

  1. 1 2 "Helastia christinae Craw, 1987". www.nzor.org.nz. Retrieved 2022-03-01.
  2. ↑ Gordon, Dennis P., ed. (2010). New Zealand inventory of biodiversity: Kingdom animalia : chaetognatha, ecdysozoa, ichnofossils. Vol. 2. p. 459. ISBN   978-1-877257-93-3. OCLC   973607714. OL   25288394M. Wikidata   Q45922947.
  3. 1 2 3 4 5 6 7 8 R. C. Craw (April 1987). "Revision of the genus Helastia sensu stricto with description of a new genus (Lepidoptera: Geometridae: Larentiinae)". New Zealand Journal of Zoology. 14 (2): 283. doi:10.1080/03014223.1987.10422997. ISSN   0301-4223. Wikidata   Q54670161.
  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: 180. doi:10.7931/J2/FNZ.14. ISSN   0111-5383. Wikidata   Q45083134.
  5. ↑ Carey-Knox-Southern-Scales (2021-11-13). "Helastia christinae". iNaturalist. Retrieved 2023-04-28.
  6. ↑ Gordon, Dennis P., ed. (2010). New Zealand inventory of biodiversity: Kingdom animalia : chaetognatha, ecdysozoa, ichnofossils. Vol. 2. p. 459. ISBN   978-1-877257-93-3. OCLC   973607714. OL   25288394M. Wikidata   Q45922947.
  7. ↑ Department of Conservation (February 2005). Part 1 Conservation Resources Report. Cluden Station Crown Pastoral Land Tenure Review (Report). p. 76. Archived from the original on 2018-02-05. Retrieved 8 December 2018.
  8. ↑ Brian H. Patrick (1991). Insects of the Dansey Ecological District (PDF). Science & Research Series. Vol. 32. pp. 1–25. ISBN   0-478-01285-3. ISSN   0113-3713. Wikidata   Q110318301. Archived from the original (PDF) on 30 December 2021.
  9. ↑ Carey-Knox-Southern-Scales (2022-10-15). "Helastia christinae". iNaturalist. Retrieved 2023-04-28.
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