Metacrias huttoni
| Metacrias huttoni | |
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| Female specimen | |
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| Male specimen | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Lepidoptera |
| Superfamily: | Noctuoidea |
| Family: | Erebidae |
| Subfamily: | Arctiinae |
| Genus: | Metacrias |
| Species: | M. huttoni
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| Binomial name | |
| Metacrias huttoni | |
| Synonyms[2] | |
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Metacrias huttoni is a species of moth in the family Erebidae. This species is endemic to New Zealand where it is known from the eastern areas of the South Island. The female of the species is flightless and buff coloured where as the male is brightly coloured and flies during the day.
Taxonomy
This species was described by
Description
The larvae of this species are approximately 2.5 cm (0.98 in) long, black and very hairy. The hairs on the terminal segments are the longest and the shortest hairs are reddish-ochreous-brown. There is are blue dots around each segment except the second.[6]
Adults males are brightly coloured and diurnal, while females are buff coloured and extremely short winged.[12]
Butler described the species as follows:
primaries pale ochraceous, with the borders and veins rather broadly black, a submarginal transverse black line or stripe, or these wings might perhaps better be described as black, with an abbreviated basal dash, a cuneiform discoidal dash, an interno-median longitudinal streak, five subconfluent longitudinal discal dashes, and a submarginal series of small conical spots pale ochraceous ; a basal subcostal carmine streak ; secondaries bright ochreous, greyish on interno-median area ; an oblique black spot on the discocellulars ; outer border, to beyond the first median branch, broadly black, uniting with a large subanal marginal black spot, and intersected by an interrupted macular ochreous line close to the margin ; fringe ochreous ; body black, with sordid whitish fringes to the tegulae ; abdomen with ochraceous borders ; wings below ochreous with black discocellular spots ; outer borders black, intersected by a series of ochreous dots ; costal borders dark orange, the primaries with an ill-defined subcostal carmine streak ; body black, pectus fringed with pale sericeous hair ; tibiae and tarsi of legs ochreous ; anterior femora carmine in front ; venter bordered and banded with ochreous. Expanse of wings 1 inch 3 lines.[3]
Distribution
This species is endemic to New Zealand.[8][13] It is known from the eastern areas of the South Island.[12]
Biology and behaviour
The female of the species is semiapterious and remains within her cocoon for mating and egg laying.[12][2] As a result of this, the population disbursal of the species is limited to the wanderings of the larvae.[14] The male of the species is diurnal and is on the wing from December to March.[6][2] Males are attracted to females by pheromones.[12] Males of this species can be attracted to the scent of females of different species within their genus.[12] Researchers have used females as lures to take advantage of this behaviour to detect males in new localities.[12] The larvae hibernates during winter.[6] Pupae cocoons are normally found beneath stones.[2]
Habitat and host species
This species prefers montane to low-alpine habitats.[12] The larvae of M. huttoni feed on various mountain grasses.[6][15] These include introduced species such as Trifolium repens, Arenaria serpyllifolia, Rumex acetosella, Cerastium fontanum and Taraxacum officinale as well as endemic species such as Festuca novae-zelandiae and indigenous species from the genera Acaena, Muehlenbeckia, Wahlenbergia and Raoulia.[14][2]
Threats
It has been shown that sheep grazing within the habitat of this species is detrimental to its populations.[14] M. huttoni is a host species for the parasitoid wasps Echthromorpha intricatoria and Cotesia urabae.[16][17]
References
- ^ ISBN 978-0477025188. Archived from the original (PDF) on 22 July 2019. Retrieved 4 June 2018.)
{{cite book}}:|journal=ignored (help - ^ a b c d e Gibbs, G. W. (1962). "The New Zealand genus Metacrias Meyrick (Lepidoptera: Arctiidae) systematics and distribution". Transactions of the Royal Society of New Zealand. Zoology. 2 (19): 153–167 – via Papers Past New Zealand.
- ^ a b Butler, A. G. (1879). "On a small collection of Heterocerous Lepidoptera, from New Zealand". Cistula Entomologica. 2: 487–511. Retrieved 5 June 2018.
- ^ Meyrick, E. (1886). "Revision of Australian Lepidoptera". Proceedings of the Linnean Society of New South Wales. 2. 1: 749–750. Retrieved 4 June 2018 – via Biodiversity Heritage Library.
- OCLC 727236768. Retrieved 27 May 2018.
- ^ OCLC 25449322.
- .
- ^ Wikidata Q45922947.
- ^ Hoare, R.J.B.; Rhode, B.E.; Emmerson, A.W. (March 2012). "Larger moths of New Zealand: Image gallery and online guide". Landcare Research. Landcare Research New Zealand Ltd. Retrieved 5 June 2018.
- ^ "Metacrias huttoni (Butler, 1879) (Species)". collections.tepapa.govt.nz. Retrieved 5 June 2018.
- ISBN 978-0477025188. Archived from the original (PDF) on 22 July 2019. Retrieved 4 June 2018.)
{{cite book}}:|journal=ignored (help - ^ CiteSeerX 10.1.1.523.200.
- ^ "Metacrias huttoni (Butlera, 1879a)". www.nzor.org.nz. Landcare Research New Zealand Ltd. Retrieved 6 June 2018.
- ^ .
- ^ Hudson, George Vernon (1912). "Notes on Flightless Females of certain Species of Moths, with an attempted explanation". Transactions and Proceedings of the New Zealand Institute. 45: 152–157 – via Biodiversity Heritage Library.
- ^ Ward, D. F.; Schnitzler, F. R. (2013). "Ichneumonidae: Pimplinae: Echthromorpha Holmgren, 1868". www.landcareresearch.co.nz. Landcare Research New Zealand Ltd. Retrieved 18 January 2017.
- ^ "Evaluation & Review Report for the release of Cotesia urabae. For the biological control of Gum Leaf Skeletoniser" (PDF). www.epa.govt.nz. 2004. Retrieved 5 June 2018.