Ipana griseata

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Ipana griseata
Declana griseata female.jpg
Female
Declana griseata male.jpg
Male
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Geometridae
Genus: Ipana
Species:
I. griseata
Binomial name
Ipana griseata
(Hudson, 1898) [1]
Synonyms [2]
  • Declana griseata Hudson, 1898

Ipana griseata is a species of moth in the family Geometridae. It is endemic to New Zealand. This species is classified as "At Risk, Declining" by the Department of Conservation.

Contents

Taxonomy

Ipana griseata was first described and illustrated by George Vernon Hudson in 1898 as Declana griseata. [3] Hudson further discussed and illustrated the species both in his 1928 and 1939 publications. [4] [5] The lectotype specimen is held at the Museum of New Zealand Te Papa Tongarewa. [6] In 2023, the species was moved to the genus Ipana. [2]

Description

Hudson gave a description and illustration of the larvae of this species in his 1939 publication. [5] In appearance the larvae are extremely variable but it is able to mimic the appearance of a twig on its host plant. [5]

The pupa are enclosed in a cocoon made of moss and plant detritus and can be found on the ground. [5]

Hudson described the adult moth as follows:

The expansion of the wings of the male is 1+18 inches, of the female 1+38 inches. The fore-wings are dull slaty-grey, with a slightly paler central band; there is a fine oblique wavy transverse line at about one-fourth, another at about one-half, and indications of a third at about three-fourths ; numerous minute black streaks are thickly scattered over the wing, especially near the base and the termen ; the outline of the termen is very slightly scalloped. The hind-wings are pale grey, darker near the termen. The body is very dark slaty-grey. The antenna of the male are not bi-pectinated. [3]

Distribution

Ipana griseata is endemic to New Zealand. [1] [7] This species range is from the Bay of Plenty/Taupo to Southland. [8] However it is likely locally extinct in some North Island localities. [8] [9] Ipana griseata has been recorded as being collected in Wellington, [3] Top house at Lake Rotoiti, [5] Mount Hutt, [5] Castle Hill, [5] Cave Creek in Paparoa National Park, [5] Arthurs Pass, [5] Waiho Gorge in Westland, [4] Dunedin, [4] Ben Lomond, [5] Lake Wakatipu, [3] Takitimu Mountains in Southland, [5] Invercargill [4] and Orepuki. [4]

Biology and behaviour

The larvae of Ipana griseata are present in December and January. [5] The adult moths emerge from February. [5] This species can be found on the wing from September until May and is attracted to light. [4] Adults rest on mossy tree trunks in the vicinity of their host plants. [10]

Host species

The host species of this moth are leafy mistletoes, [8] including Peraxilla colensoi . [5]

Conservation status

This moth is classified under the New Zealand Threat Classification system as being "At Risk, Declining". [11] It was regarded by Hudson as being a scarce species even when first described. [3] The survival of this moth is dependent on the survival of its host plants. [8]

Related Research Articles

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References

  1. 1 2 "Declana griseata Hudson, 1898". www.nzor.org.nz. Landcare Research New Zealand Ltd. Retrieved 9 May 2018.
  2. 1 2 Dugdale, J. S.; Emmerson, A. W.; Hoare, R. J. B. (2023). "Declana and Ipana (Insecta: Lepidoptera: Geometridae: Ennominae)". Fauna of New Zealand. 82: 1–120. doi:10.7931/J2/FNZ.82. ISSN   0111-5383. Wikidata   Q124100766.
  3. 1 2 3 4 5 Hudson, G. V. (1898). New Zealand moths and butterflies (Macro-lepidoptera). London: West, Newman & Co. p. 98. doi:10.5962/bhl.title.7912.
  4. 1 2 3 4 5 6 Hudson, G. V. (1928). The Butterflies and Moths of New Zealand. Wellington: Ferguson & Osborn Ltd. p. 151.
  5. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Hudson, George Vernon (1939). A supplement to the butterflies and moths of New Zealand. Wellington: Ferguson & Osborn. p. 416. OCLC   9742724.
  6. Dugdale, J. S. (1988). "Lepidoptera - annotated catalogue, and keys to family-group taxa" (PDF). Fauna of New Zealand. 14: 164. Archived from the original (PDF) on 27 January 2019. Retrieved 9 May 2018.
  7. 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.
  8. 1 2 3 4 Patrick, Brian; Dugdale, John S. (2000). Conservation status of the New Zealand lepidoptera (PDF). Wellington, N.Z.: Department of Conservation, New Zealand. ISBN   0478218672. OCLC   154670803.
  9. Keesing, Vaughan (6 May 2012). "Ecological Review of the Terrestrial Ecological AEE Prepared for the Hawke's Bay Regional Council Ruataniwha Water Storage Project" (PDF). www.hbrc.govt.nz. Retrieved 9 May 2018.
  10. Glime, J. M. (2017). "Terrestrial Insects: Holometabola – Lepidoptera: Geometroidea – Noctuoidea". www.digitalcommons.mtu.edu. Retrieved 9 May 2018.
  11. 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. 7. ISBN   9781988514383.