Helastia alba

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

Helastia alba is a moth of the family Geometridae. [1] This species is endemic to New Zealand and is found only in the South Island. This species inhabits native forest or scrubland and can be observed in montane to subalpine Nothofagus dominant forests. It has also been observed at lower altitudes in native podocarp forests. Larvae of this species have been raised on mosses. Adults are on the wing from November to January and are nocturnal. This species is very similar in appearance to other species in the genus Helastia but specimens can be distinguished by the dissection of their genitalia.

Contents

Taxonomy

This species was first described by Robin C. Craw in 1987. [2] The male holotype, collected by Merlin Owen Pascoe in Queenstown, is held in the New Zealand Arthropod Collection. [3]

Description

Male holotype of Helastia alba. Male holotype Helastia alba TYPELEP006710.png
Male holotype of Helastia alba.

Craw described this species as follows:

Small to medium sized (r.f.l. 9-12.5mm) triangular forewing. Upper side forewing coloration and pattern dull whitish to whitish grey with dark brown to brown-ish ochreous wavy transverse lines. Male antennae bipectinated. [2]

Distribution

This species is endemic to New Zealand. [4] [5] This species is found only in the South Island and has been observed in the in following regions: Nelson, Buller, North Canterbury, Mid Canterbury, Mackenzie, Otago Lakes, Fiordland and Southland. [2] In the Otago Lakes region it is regarded as being widespread but local in occurrence. [6]

Species within the genus Helastia are very similar in appearance and as such can be difficult to identify. [7] H. alba has frequently been confused with H. cinerearia or with H. mutabilis . [2] However all these species can be distinguished from one another by the dissection of the genitalia of the specimen. [2]

Habitat and hosts

This species inhabits the edge of native forest or shrubland. [6] It lives in Nothofagus forests at altitudes ranging from montane to sub-alpine. [2] It has also been observed in native podocarp forests at lower altitudes. [2] Larvae have been raised on mosses. [7]

Behaviour

Adults are on the wing from November to January. [8] They are nocturnal and are attracted to light. [2]

Related Research Articles

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Xanthorhoe semifissata, commonly known as the Barred Pink Looper, is a moth of the family Geometridae. It is endemic to New Zealand and is found throughout the country although it is much less common in the mountains in the south and west of the South Island. The larvae host plants include Nasturtium officinale as well as species in the Cardamine genus. Adult moths inhabit shrubs at the edge of native forest.

<i>Helastia</i> Genus of moths

Helastia is a genus of moths in the family Geometridae erected by Achille Guenée. It is considered by some to be a synonym of Larentia. This genus was redefined and described in 1987 by Robin C. Craw. This genus is endemic to New Zealand.

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<i>Helastia cinerearia</i> Species of moth endemic to New Zealand

Helastia cinerearia is a moth of the family Geometridae. It is endemic to New Zealand and can be found in the North, South and Stewart Islands as well as on the Mercury and Chatham Islands. The preferred habitat of H. cinerearia includes urban gardens, various types of forest and sub alpine habitats. The larval host is lichen on rocks. The adult moths are on the wing all year round but are most commonly observed from September until February. Adult moths are nocturnal and have been observed feeding from and likely pollenating Hebe salicifolia, Hoheria lyallii and Leptospermum scoparium.

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<i>Asaphodes albalineata</i> Species of moth, endemic to New Zealand

Asaphodes albalineata is a species of moth in the family Geometridae. It is endemic to New Zealand and has been observed on Stewart Island / Rakiura. This species is similar in appearance to Asaphodes oraria but can be distinguished as it has an unusual pattern on the underside of its hindwings. It inhabits open hill tops and adults are on the wing in December.

<i>Helastia angusta</i> Species of moth

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<i>Helastia clandestina</i> Species of moth endemic to New Zealand

Helastia clandestina is a moth of the family Geometridae. This species is endemic to New Zealand and is found only in the South Island in and around Arthur's Pass. Adults have been collected on the wing in February and are nocturnal. Its preferred habitat is dry stony riverbeds and flood plains. The glossy blueish grey colouration of the adults of this species helps camouflage them against the rocks in their preferred habitat. H. clandestina is classified as having the conservation status of "At Risk, Relict'" by the Department of Conservation.

<i>Helastia expolita</i> Species of moth endemic to New Zealand

Helastia expolita is a moth of the family Geometridae. This species is endemic to New Zealand and occurs in the Bulle, Marlborough, North and Mid Canterbury regions.This species inhabits short tussock grassland in montane to subalpine zones. Adult moths are nocturnal but little is known about the life history of H. expolita. Adults have been observed on the wing in November. It has been hypothesised the larvae of H. expolita feed on the flowers of Helichrysum species and then feed on mosses, lichens or shrubs growing nearby. It is classified as "At Risk, Relict'" by the Department of Conservation.

<i>Asaphodes citroena</i> Species of moth

Asaphodes citroena is a species of moth in the family Geometridae. This species is endemic to New Zealand and has been collected in Westland. It inhabits native forest and scrub and has also been collected in open spaces along riverbeds. Adults are on the wing in December and January.

<i>Asaphodes declarata</i> Species of moth

Asaphodes declarata is a species of moth in the family Geometridae. This species is endemic to New Zealand and has been observed in the southern parts of the South Island. This species prefers open tussock grassland habitat amounts beech forest and in mountainous terrain. It can be found at altitudes of between 450 and 1750 m. The adults of this species are on the wing from November to March. The moths can vary both in size and, with the female of the species, in markings.

<i>Asaphodes oraria</i> Species of moth

Asaphodes oraria is a species of moth in the family Geometridae. This species is endemic to New Zealand and has been observed in the southern South Island and on Stewart Island / Rakiura. The male is pale yellow coloured and the female has severely reduced wings and is flightless. The habitat of this species is tussock grasslands on coastal sand dunes and in the mountains at elevations of approximately 4,000ft. The larvae have adapted to feeding on exotic lawn daisy species in the genus Bellis. The adults of this species are on the wing from November to April.

<i>Asaphodes periphaea</i> Species of moth

Asaphodes periphaea is a moth in the family Geometridae. It is endemic to New Zealand and has only been collected in the mountains near Lake Wakatipu in the South Island. The male is fuscous coloured sprinkled with whitish colouration. The female is brachypterous. The preferred habitat of this species are alpine bluffs as well as mountainous open country. This species is on the wing from January to March.

<i>Asaphodes philpotti</i> Species of moth

Asaphodes philpotti is a moth in the family Geometridae. It is endemic to New Zealand and has been found in the South Island as well as one observation in Wainuiomata in the North Island. This species inhabits native forest and larvae are hosted by species in the genera Hydrocotyle and Cardamine.

<i>Helastia christinae</i> Species of moth endemic to New Zealand

Helastia christinae is a moth of the family Geometridae. 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".

<i>Helastia cryptica</i> Species of moth endemic to New Zealand

Helastia cryptica is a moth of the family Geometridae. It was first described by Robin C. Craw in 1987. This species is endemic to New Zealand and is found from mid Canterbury south. This preferred habitat of H. cryptica is native forest and scrub at altitudes ranging from lowland to subalpine. It has also been observed in human modified habitat. The larvae of this species has been observed on Melicytus alpinus, likely feeding on perched dead leaves and have been hypothesised as feeding on epiphytic mosses. Adults are nocturnal and are on the wing from November until January. Externally this species is indistinguishable from its close relative H. cymozeucta. However the distribution of these two species can assist in the correct identification of specimens.

<i>Helastia corcularia</i> Species of moth endemic to New Zealand

Helastia corcularia is a moth of the family Geometridae. This species is endemic to New Zealand and is found only in the South Island and the Chatham Islands. It inhabits a wide variety of habitats including native forest and scrubland, gardens, parks, subalpine and coastal areas. Larvae feed on herbs, lichen and moss. The adults of the species are on the wing from September until May and are nocturnal and attracted to light. H. corcularia is considered an orchard and pack house contaminant.

<i>Helastia cymozeucta</i> Species of moth endemic to New Zealand

Helastia cymozeucta is a moth of the family Geometridae. It was first described by Edward Meyrick in 1913. This species is endemic to New Zealand and is found in both the North and the upper parts of the South Island. The adults of this species have been observed on the wing from November to January as well as in March.

<i>Helastia semisignata</i> Species of moth endemic to New Zealand

Helastia semisignata is a moth of the family Geometridae. This species is endemic to New Zealand and is only found in the North Island. The life history of this species is in need of further investigation as sources differ about what plants host the larvae. Adults are on the wing commonly from October until March.

References

  1. 1 2 "Helastia alba Craw, 1987 - Biota of NZ". biotanz.landcareresearch.co.nz. Retrieved 2023-03-08.
  2. 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): 269–293. doi:10.1080/03014223.1987.10422997. ISSN   0301-4223. Wikidata   Q54670161.
  3. 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.
  4. 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.
  5. "Helastia alba Craw, 1987". www.nzor.org.nz. Retrieved 2022-03-01.
  6. 1 2 Crown Pastoral Land Tenure Review Castle Dent Conservation Resources Report - Part 1 (PDF) (Report). Land Information New Zealand. August 2005.
  7. 1 2 Robert J. B. Hoare (2014). A Photographic Guide to Moths & Butterflies of New Zealand. Illustrator: Olivier Jean-Philippe Ball. p. 96. ISBN   978-1-86966-399-5. Wikidata   Q59396160.
  8. "Helastia alba". iNaturalist. Retrieved 2023-04-29.