Ichneutica unica

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Ichneutica unica
Tmetolophota unica male.jpg
Male
Tmetolophota unica female.jpg
Female
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Noctuoidea
Family: Noctuidae
Genus: Ichneutica
Species:
I. unica
Binomial name
Ichneutica unica
(Walker, 1856) [1]
Synonyms
  • Leucania unicaWalker, 1856
  • Tmetolophota unical(Walker, 1856)
  • Nonagria juncicolorGuenee, 1856
  • Graphania juncicolor(Guenee, 1856)
  • Graphania unica(Walker, 1856)

Ichneutica unica is a species of moth in the family Noctuidae. [1] It is endemic to New Zealand and is found in the centre of the North Island and throughout the South Island. This moth is very similar in appearance to its close relatives Ichneutica phaula and Ichneutica toroneura. I. phaula can be distinguished as there is a difference in pectinations on the male antennae and I. toroneura can be distinguished as the black vein markings on the forewings is more uniform for that species in comparison to I. unica. I. unica is variable in appearance with the North Island specimens having a darker brown colour on the forewings and having a darker underside of the hindwings. This species inhabits open tussock grassland at various altitudes, coastal dunes, and inland volcanic dunes. Larvae feed on tussock grasses such as Chionochloa pallens and species in the genus Poa . Adult moths are on the wing from November to February and are attracted to both sugar and light traps.

Contents

Taxonomy

This species was first described by Francis Walker in 1856 using specimens collected at Waikouaiti by Percy Earl. [2] [3] Walker originally named the species Leucania unica. [2] [4] The holotype specimen is held at the Natural History Museum, London. [4] In 1868 Achille Guenée, thinking he was describing a new species, named the species Nonagria juncicolor. [4] George Hudson discussed and illustrated this species under the name Leucania unica both in his 1898 book New Zealand moths and butterflies (Macro-lepidoptera), [5] and his 1928 publication The Butterflies and Moths of New Zealand. [6] In his 1898 publication Hudson synonymised the name given to the species by Guenée. [4] [5] In 1971 John S. Dugdale transferred all the New Zealand species in the genus Leucania to the genus Tmetolophota. [7] [4] In 2019 Robert Hoare undertook a major review of New Zealand Noctuidae species. [3] During this review the genus Ichneutica was greatly expanded and the genus Tmetolophota was subsumed into that genus as a synonym. [3] As a result of this review, this species is now known as Ichneutica unica. [3]

Description

Edward Meyrick described the species as follows:

Male, female. — 34-35 mm. Head, palpi, antennae, thorax, abdomen, and legs whitish-ochreous, slightly brownish-tinged ; antennae in male moderately bipectinated, pectinations strongly ciliated. Forewings moderately dilated, costa almost straight, apex obtuse, hindmargin waved, somewhat oblique, rounded beneath ; whitish-ochreous, slightly brownish-tinged, sometimes with a few scattered black scales ; first Iine represented by three pairs of obscure black dots ; a posterior curved series of black dots : cilia whitish-ochreous. Hindwings grey, more or less tinged with whitish-ochreous ; cilia pale whitish-ochreous. [8]

The wingspan of the male adult of this species is between 32 and 37 mm and the female is between 32 and 36 mm. [3] I. unica is variable in appearance with the North Island specimens having a darker brown colour on the forewings and having a darker underside of the hindwings. [3] This species is very similar in appearance to I. phaula but does not have the dentate antennae on the male of that species. [6] It is also similar in appearance to I. toroneura but can be distinguished as the black vein markings are more patchy on the I. unica forewings. [3]

Distribution

Tussock habitat of T. unica at Waiouru 20130606 OH H1013410 0010.JPG - Flickr - NZ Defence Force.jpg
Tussock habitat of T. unica at Waiouru

This species is endemic to New Zealand. [9] It is found in the centre of the North Island and throughout the South Island. The species has been collected in the North Island at Waiouru and Ohakune and in the South Island at Blenheim, Raikaia, Quail Island, Dunedin, Lake Wakatipu, Alexandra and Macetown. [8] [6] [10]

Habitat

This species prefers a variety of habitats including open tussock grassland at various altitude, [6] coastal dunes, and inland volcanic dunes. [7]

Behaviour

The species is on the wing from November to February. [6] It has been collected through sugar trapping. [6] This species is also attracted to light and specimens have been collected through light trapping. [11] It has been shown that artificial warming increases the body size of this moth. [12]

Life history and host species

Some part of this species life history is unknown but larvae are herbivorous and feed on the leaves of grasses including Chionochloa pallens as well as species within the genus Poa . [7] [13] [10]

Related Research Articles

<i>Ichneutica</i> Genus of moths, endemic to New Zealand

Ichneutica is a genus of cutworm or dart moths in the family Noctuidae. The genus is found in New Zealand and surrounding islands. There are more than 80 described species in Ichneutica, the largest known genus of Lepidoptera in New Zealand. In 2019 this genus was revised and greatly expanded with the genera Graphania Hampson, 1905, Tmetolophota Hampson, 1905 and Dipaustica Meyrick, 1912 all subsumed within it.

<i>Ichneutica semivittata</i> Species of moth

Ichneutica semivittata is a moth of the family Noctuidae. It is endemic to New Zealand. It can be found from the Three King Islands down to Stewart Island. The similar species I. sulcana can be distinguished from I. semivittata as the former is much larger, has a darker hindwing and abdomen and has only one to three spots located behind the middle of the forewing in comparison to the 8 or 9 of I. semivittata. This species lives in a variety of habitats from open grasslands to clearings in forest and at a range of altitudes from the sea level to the alpine zone. Larval host species include Juncus procera, Carex secta as well as on tussock grasses such as Poa cita, P. colensoi and Festuca novae-zelandiae. Adults of this species are on the wing from August to April and are attracted to light.

<i>Ichneutica lissoxyla</i> Species of moth

Ichneutica lissoxyla is a moth of the family Noctuidae. It is endemic to New Zealand. It is found in the central and southern parts of the North Island and in most parts of the South Island. The species prefers snowgrass habitat in the alpine zone. I. lissoxyla is similar in appearance to I. paraxysta but can be distinguished as I. lissoxyla lack the black streaks on the forewings that can be found on the latter species and the male I. lissoxyla also has longer pectinations on antennae. The life history of this species is unknown as are the host species of its larvae. Adults are on the wing from January to April and are attracted to the light.

<i>Ichneutica scutata</i> Species of moth

Ichneutica scutata is a moth of the family Noctuidae. It is endemic to New Zealand. This species can be found in the southern parts of the North Island as well as the eastern parts of the South Island. It is similar in appearance to I. insignis and I. skelloni but can be distinguished as I. scutata is much paler in appearance. It is likely this species inhabits lowland tussock grasslands as well as coastal dunes although it is not common in inland tussock grasslands. The larvae feed on a variety of herbaceous plants such as Plantago and Convolvulus species, Plagianthus divaricatus. It pupates on soil near its host plants. The adults are on the wing from late March to July.

<i>Ichneutica acontistis</i> Species of moth

Ichneutica acontistis is a moth of the family Noctuidae. It is endemic to New Zealand and is found only in the South Island, mainly on the eastern side although not in the Nelson district. This species is similar in appearance to I. paraxysta,I. stulta and I. toroneura. I. acontistis is unlikely to be confused with I. paraxysta as the later is only found in the North Island. I. acontistis can be distinguished from I. stulta as the latter species has a strongly curved forewing edge where as I. acontistis' is straight. I. acontistis can be distinguished from I. toroneura as the former has a dark stroke of colour starting from the base of the forewing that I. toroneura lacks. I. acontistis inhabits tussock grasslands and the larvae of this species feed on species of grass found in the genera Poa, Elymus and Rytidosperma. It pupates under rocks and adults are on the wing from September to January. I. acontistis are attracted to light.

<i>Ichneutica arotis</i> Species of moth

Ichneutica arotis is a moth of the family Noctuidae. It is endemic to New Zealand. This species is found throughout the North and South Islands but has yet to be recorded on Stewart Island. I. arotis is variable in appearance and have been described as having a "northern dark form", a "typical" form and a "swamp" form. Robert Hoare hypothesised that this species may be in the process of evolving into several distinct species. However, as these forms show no difference in antennae or genitalia so, as at 2019, they are not regarded as separate species. Larval hosts include species in the genera Cortaderia and Schoenus as well as Phormium tenax. The caterpillar feeds at night and rests in during the day amongst dead flax leaves. It pupates in a loose cocoon either hidden at the base of a stem of flax or on the ground. The adults of this species is on the wing from September to April. In the North Island there have also been records of adults being on the wing in June to August.

<i>Ichneutica alopa</i> Species of moth

Ichneutica alopa is a moth of the family Noctuidae. It is endemic to New Zealand and is found in the central and southern parts of the North Island as well as in the South Island. It inhabits tussock grasslands and wetlands and can occur at ranges from the alpine zone down to almost sea-level. The life history of this species is unknown as are the host species of its larvae in the wild. Larvae of this species have been raised in captivity on Sphagnum moss as well as on species in the genus Raoulia. Adults of this species are on the wing from late January to April and are attracted to light and to sugar traps. I. alope can be confused with I. agorastis, I. micrastra or I. sapiens but the latter three species can be distinguished externally from I. alope through differences in size, forewing pattern and the antennae of the male of the species.

<i>Ichneutica atristriga</i> Species of moth

Ichneutica atristriga is a moth of the family Noctuidae. It is endemic to New Zealand and is found through out the North, South and Stewart Islands. The larval hosts likely include tussock grasses included Poa cita, P. colensoi and Festuca novae-zelandiae. Larvae have been reared on species in the genera Bromus and Festuca. The adults of this species are on the wing from November to May. I. atristriga can possibly be confused with the smaller species I. propria. However I. atristriga has thorax and forewings that have a pinkish tinge and I. propria has a dark streak on the discal part of the forewing which I. atristriga lacks. A study has indicated that the population numbers of this species have decreased.

<i>Ichneutica blenheimensis</i> Species of moth

Ichneutica blenheimensis is a species of moth in the family Noctuidae. It is endemic to New Zealand and is found throughout the North, South and the Stewart Islands. This species appears to prefer drier eastern localities and is rarely collected in western North Island forested areas. It does not appear to be frequently collected in inland dry tussock grassland habitats. The host plant for the larvae of this species is likely to be the golden sand sedge pīngao which is now absent from the moths type locality. However Chappell has raised very young larvae on grass species and the more developed larvae consumed Phormium tenax. Adults are on the wing from November to March and are attracted to both light and sugar traps. The blackish forewing fringes are diagnostic of this species. But worn specimens of I. arotis can be confused with worn specimens of I. blenheimensis. However I. arotis can be distinguished from I. blenheimensis as it has a scale-tuft on the thorax and dark longitudinal stripes on the tegula. This species is classified as "At Risk, Naturally Uncommon" by the Department of Conservation.

<i>Ichneutica micrastra</i> Species of moth

Ichneutica micrastra is a moth of the family Noctuidae. It is endemic to New Zealand. This species has been found only in the North Island and has been collected in the Northland, Auckland, Whanganui and Wellington regions. The preferred habitat of this species is wetlands and heathlands including gum fields in Northland. Adults of this species are on the wing from October to December. The life history of this species is unknown as are the host species of its larvae however it has been hypothesised that the likely larval host is a grass or grass like plant. This species is very similar in appearance to I. phaula and I. sapiens but can be distinguished as a result of differences in male antennae, the shape, colour and size of forewings, the range of the species as well as differences in genital shape.

<i>Ichneutica phaula</i> Species of moth

Ichneutica phaula is a moth of the family Noctuidae. It is endemic to New Zealand. It is found only in the South Island in the Nelson district, the eastern side of the South Island and Stewart Island. I. phaula inhabits tussock grasslands and coastal sand dunes. Host species include Ficinia spiralis, Ammophila arenaria, Poa cita and other "tussock grasses". The adults of this species are on the wing from October to December and are attracted to sugar traps. I. phaula is similar in appearance to both I. micastra, with whom it does not share a range, and I. sapiens which differs from I. phaula as I. sapiens is darker and has a more reddish tinge.

<i>Ichneutica propria</i> Species of moth

Ichneutica propria is a moth of the family Noctuidae. It is endemic to New Zealand. This species is only known from Tongariro National Park and Pureora Forest in the North Island but is widespread in the South Island. I. propria might be confused with faded I. atristriga, however the later species lacks the distinctive marking on the prothorax nor does it have the black mark running through the middle of the forewing. It is very common and widespread in montane to alpine grassland areas. Although the larvae have yet to be described, they have been reared on Poa cita and Festuca novae-zelandiae and are known to feed on introduced grass species. The adults of this species are on the wing from December to mid May and are attracted to light.

<i>Ichneutica stulta</i> Species of moth

Ichneutica stulta is a moth of the family Noctuidae. It is endemic to New Zealand. This species has only been collected from West Plains and Tuturau in Southland but, as at 2021, no male species appears to exist in collections. I. stulta can resemble I. acontistis but can be distinguished as I. stulta has a strongly curved forewing edge as well as having a discal spot on the underside of the hindwing. I. stulta is also darker than specimens of I. acontistis obtained in the southern parts of the South Island. I. stulta is also very similar in appearance to I. emmersonorum but the later species has darker forewings and is more strongly marked on the thorax. The life history of this species is unknown as are the host species of the larvae but the adults have been recorded as being on the wing from October to December.

<i>Ichneutica steropastis</i> Species of moth endemic to New Zealand

Ichneutica steropastis, or the flax notcher moth, is a species of moth in the family Noctuidae. It is endemic to New Zealand and can be found throughout the country from the Three Kings Islands to Stewart Island as well as in the Chatham Islands. The larvae of this species feed on a variety of native and introduced plants however the New Zealand flax is one of the more well known host plants for the larvae of this moth. The larvae are nocturnal, hiding away in the base of the plants and coming out to feed at night. They create a distinctive notch in the leaf when they feed. The adults of this species are on the wing from October to March. Although adult specimens of I. steropastis are relatively easy to recognise they might possibly be confused with I. inscripta, I. theobroma or with darker forms of I. arotis. However I. steropastis can be distinguished as it has a long dark basal forewing streak that these three species lack.

<i>Ichneutica averilla</i> Species of moth

Ichneutica averilla is a moth of the family Noctuidae. It is endemic to New Zealand. This species is found in the North Island at Mount Taranaki but is widespread throughout the South Island and Stewart Island. It prefers mountainous habitat but can be found down to sea level in the southern parts of the South Island. Adults of the species are on the wing between November and March. Larvae likely exist on a variety of herbaceous plants but have been recorded as feeding on species within the genus Plantago. This species is sometimes confused with I. mutas but can be distinguished from the latter on the basis of forewing colour as well as the absence of or an indistinct antemedian forewing line.

<i>Ichneutica toroneura</i> Species of moth

Ichneutica toroneura is a moth of the family Noctuidae. It is endemic to New Zealand. This species is similar to I. unica but can be distinguished from that species by the uniform black vein markings on the forewings of I. toroneura. It is also similar in appearance to I. acontistis but the base of the forewings of I. toroneura lack the dark stripe that can be found on the forewings of I. acontistis. The males of I. toroneura have longer pectinations on their antennae. I. toroneura is found in the centre of southern South Island in the tussock grasslands of Central Otago and the Mackenzie Basin. Larvae feed on tussock grasses Poa cita and Festuca novae-zelandiae. Adults are on the wing from November to January.

<i>Ichneutica paraxysta</i> Species of moth

Ichneutica paraxysta is a moth of the family Noctuidae. It is endemic to New Zealand. This species is very similar in appearance to its close relative I. acontistis but as the range of the two species do not overlap this is unlikely to cause confusion. I. paraxysta is only found in the North Island at the subalpine zones in the Mount Taranaki region and at Mount Ruapehu. It prefers tussock grassland and shrubland habitat. The life history of this species is unknown as are the host species of its larvae however it has been hypothesised that the larval host plants are species in the genera of Poa and Festuca.

<i>Ichneutica ceraunias</i> Species of moth endemic to New Zealand

Ichneutica ceraunias is a moth of the family Noctuidae. It is endemic to New Zealand. This species is found from the central North Island to the bottom of the South Island. Hosts of the larvae are species of Chionochloa and Festuca. This colourful moth is variable in appearance and can be mistaken for Ichneutica dione. Adults are on the wing from October to February.

<i>Ichneutica chryserythra</i> Species of moth

Ichneutica chryserythra is a moth of the family Noctuidae. Living specimens have distinctive violet red coloured forewings but can be distinguished from the similar species Ichneutica marmorata as it lacks the dark edge markings of the later species. I. chryserythra can only be found in the southern parts of the South Island. Adults are on the wing between November and January. The life history of the species and the host species of its larvae are unknown.

Ichneutica sapiens is a moth of the family Noctuidae. This species is endemic to New Zealand. I. sapiens is found in the central North Island, in the South Island in Westland and also the southern parts of the South Island, and in Stewart Island. This species inhabits wetland habitat but its life history is unknown as are the host species of its larvae. The adult moths are on the wing between December and early January and are attracted to sugar traps and to light. I. sapiens is very similar in appearance to I. micrastra but is a smaller moth with a shorter wingspan, has differently formed antennae and slightly different forewing markings.

References

  1. 1 2 "Ichneutica unica (Walker, 1856)". www.nzor.org.nz. 2021. Retrieved 2021-07-31.
  2. 1 2 Walker, Francis (1856). Gray, John Edward (ed.). List of the specimens of lepidopterous insects in the collection of the British Museum. Part IX - Noctuidae. London: British Museum (Natural History). Department of Zoology. p. 112.
  3. 1 2 3 4 5 6 7 Hoare, Robert J. B. (2019-12-09). "Noctuinae (Insecta: Lepidoptera: Noctuidae) part 2: Nivetica, Ichneutica". Fauna of New Zealand. 80: 1–455. doi:10.7931/J2/FNZ.80.
  4. 1 2 3 4 5 Dugdale, J. S. (1988). "Lepidoptera - annotated catalogue, and keys to family-group taxa" (PDF). Fauna of New Zealand. 14: 1–269. ISBN   978-0477025188. Archived from the original (PDF) on 27 January 2019. Retrieved 10 June 2018.
  5. 1 2 Hudson, G. V. (1898). New Zealand moths and butterflies (Macro-lepidoptera). London. p. 12. doi:10.5962/bhl.title.7912. OCLC   727236768 . Retrieved 10 June 2018.{{cite book}}: CS1 maint: location missing publisher (link)
  6. 1 2 3 4 5 6 Hudson, G. V. (1928). The Butterflies and Moths of New Zealand. Wellington: Ferguson & Osborn Ltd. p. 52. OCLC   25449322. Archived from the original on 2020-09-28. Retrieved 2018-06-11.
  7. 1 2 3 Dugdale, J.S. (1971). "Entomology of the Aucklands and other islands south of New Zealand: Lepidoptera, excluding non-crambine Pyralidae" (PDF). Pacific Insects Monograph. 27: 55–172.
  8. 1 2 Meyrick, Edward (1887). "Monograph of New Zealand Noctuina". Transactions and Proceedings of the New Zealand Institute. 19: 3–40 – via Biodiversity Heritage Library.
  9. ↑ "Ichneutica unica (Walker, 1856)". nztcs.org.nz. 2021. Retrieved 2021-07-31.
  10. 1 2 Patrick, H.J.H.; Bowie, M.H.; Fox, B.W.; Patrick, B.H. (2011). "The moths of Quail Island (Otamahua): a faunal comparison of an island under restoration with other sites on Banks Peninsula" (PDF). New Zealand Natural Sciences Journal. 36: 57–72. Archived from the original (PDF) on 2016-03-03. Retrieved 2018-06-11.
  11. ↑ Patrrick, B. H.; Archibald, R. D. (January 1988). "Lepidoptera light-trapped at Owaka, South Otago" (PDF). New Zealand Entomologist. 11 (1): 70–72. doi:10.1080/00779962.1988.9722541. Archived from the original (PDF) on 9 February 2013. Retrieved 11 June 2018.
  12. ↑ Xi, Xinqiang; Yang, Yangheshan; Yang, Xiaocheng; Nylin, Sören; Eisenhauer, Nico; Sun, Shucun (13 November 2017). "Differential responses of body growth to artificial warming between parasitoids and hosts and the consequences for plant seed damage". Scientific Reports. 7 (1): 15472. Bibcode:2017NatSR...715472X. doi:10.1038/s41598-017-15453-y. PMC   5684347 . PMID   29133829.
  13. ↑ "PlantSynz - Invertebrate herbivore biodiversity assessment tool: Database". plant-synz.landcareresearch.co.nz. Retrieved 2018-06-11.
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