Ichneutica agorastis

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Ichneutica agorastis
Graphania agorastis female.jpg
Female
Graphania agorastis male.jpg
Male
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Noctuoidea
Family: Noctuidae
Genus: Ichneutica
Species:
I. agorastis
Binomial name
Ichneutica agorastis
(Meyrick, 1887) [1]
Synonyms
  • Mamestra agorastisMeyrick, 1887
  • Graphania agorastis(Meyrick, 1887)
  • Melanchra agorastis(Meyrick, 1887)

Ichneutica agorastis is a moth of the family Noctuidae. [1] This species is endemic to New Zealand. This moth is similar in appearance to two other species in the genus but can be distinguished through the colour and size of its forewings. This species is found in the South Island and Stewart Island in open habitats in the subalpine zone. However, in Southland I. agorastis can be found down to sea-level. Adult moths are on the wing between January and April. The life history and host species are unknown.

Contents

Taxonomy

This species was first described by Edward Meyrick in 1887 from specimens collected at Lake Guyon and Akaroa and named Mamestra agorastis. [2] [3] The male lectotype specimen, collected by Richard William Fereday at Lake Guyon, is held at the Natural History Museum, London. [3] [4] In 1988 John S. Dugdale, in his catalogue of New Zealand Lepidoptera, placed this species within the Graphania genus. [3] In 2019 Robert Hoare undertook a major review of New Zealand Noctuidae species. [4] During this review the genus Ichneutica was greatly expanded and Graphania Hampson, 1905 was subsumed into that genus as a synonym. [4] As a result of this review, this species is now known as Ichneutica agrorastis. [4]

Description

Ichneutica agorastis Ichneutica agorastis 112754568.jpg
Ichneutica agorastis

Meyrick described this species as follows:

Male, female. — 35 mm. Head, palpi, and thorax reddish-fuscous ; thorax with small anterior and median crests. Antennae fuscous, in male with rather short strongly ciliated pectinations. Abdomen grey, anal tuft light reddish. Legs reddish-fuscous, irrorated with ochreous whitish. Forewings moderately dilated, costa almost straight, apex obtuse, hindmargin waved, obliquely rounded ; rather dark reddish-fuscous, lines greyish-tinged, edged with dark reddish-fuscous, tolerably defined ; claviform small, obscure, greyish ; orbicular and reniform dark grey, margined with white and then with dark reddish-fuscous, orbicular round, reniform oblong : a tolerably distinct median shade ; subterminal whitish-ochreous, obscure, waved ; a hind-marginal series of black lunules : cilia reddish-fuscous. Hindwings fuscous ; cilia whitish, with a fuscous line. [2]

I. agorastis is very similar in appearance to I. hartii and has also been confused with I. alopa. [4] I. agorastis can be distinguished from I. hartii as the former species normally has a larger wingspan. [4] I. agorastis also has a more reddish tinge to their forewings in comparison to I. hartii whose forewings tend to have a purplish colouration. [4] I. agorastis can be distinguished from I. alopa as the former has more distinctive and paler crosslines on its forewings. [4] The wingspan of I. agorastis is between 32 and 39 mm. [4]

Distribution

Ichneutica agorastis is endemic to New Zealand. [1] It can be found in the South Island and Stewart Island, however the presence of this species in the North Island has yet to be confirmed. [4]

Habitat

This species can be found in subalpine zones in open habitats such as tussock grasslands but has been found as low as sea level in locations in Southland. Specimens have been collected in string mires. [4]

Behaviour

Adults of this species are on the wing from January to April. [4]

Life history and host species

The life history of this species is unknown as are the host species of its larvae. [4]

Related Research Articles

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

Ichneutica lithias is a moth of the family Noctuidae. This species is endemic to New Zealand. It is a small moth but distinctive as a result of the markings on its forewings. Although this species is widespread in the South Island, it has only been collected in the Rangipo Desert in the North Island. The species prefers habitat that is scrubland ranging in altitude from coastal to alpine. Adults are on the wing from October to April and larvae have been collected and reared on the New Zealand endemic plant species Melicytus alpinus.

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

Ichneutica mollis is a moth of the family Noctuidae. It is endemic to New Zealand and is found from the Coromandel peninsular and Mount Te Aroha southwards including in the South and Stewart Islands. It lives in a variety of habitats including mountainous beech forest, podocarp forest and also grasslands. The larvae feed on grasses and herbs. The adults of this species are on the wing from October to March and are attracted to light and feed on blossoms.

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

Ichneutica olivea is a moth of the family Noctuidae. It is endemic to New Zealand and is found in the central North Island down to the central South Island. It is very similar in appearance to I. lindsayorum but has a shorter basal streak and has white scaling from the subterminal line on the forewings that I. lindsayorum lacks This species prefers shrubland habitat. The life history of I. olivea is unknown as are the host species of its larvae. The adults are on the wing from December to March and are attracted to light.

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

Ichneutica omoplaca is a moth of the family Noctuidae. It is endemic to New Zealand. It is widespread from the Bay of Plenty in the North Island down to Southland in the South Island. Specimens have also been collected from the Auckland Islands. It lives in a variety of habitats including beech forest clearings and tussock grasslands. This species has been recorded that some of the larval hosts of this species include Poa cita, Dactylis glomerata and it has been reared on Plantago lanceolata. The larva is undescribed but pupae have been found in a pine plantation in soil under weeds. Adults of this species are on the wing from October to March. The adult moths are variable in appearance but the diagnostic feature is the pale ochreous to white colouring between the basal streak and the costa which contrasts with the ground colour of the forewing.

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

Ichneutica pelanodes is a moth of the family Noctuidae. It is endemic to New Zealand and has been found in scattered locations in the North, South and Stewart Islands. I. pelanodes is easily confused with I. skelloni as the two species are visually extremely similar. In the North Island though the range of the two species appears not to overlap. Generally of the two species I. pelanodes tends to be darker in appearance. I. pelanodes inhabits wetlands but the life history of this species is unknown as are the host species of its larvae. Adults are on the wing from October to February and are attracted both to sugar and light traps.

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

Ichneutica petrograpta is a moth of the family Noctuidae. This species is endemic to New Zealand where it is found in the southwest districts of the South Island, including Westland, Otago Lakes and Fiordland. It is very similar in appearance to I. mutans. It inhabits tussock and shrubland in the alpine to subalpine zones. Adults of I. petrograpta are on the wing from December to February and are attracted to sugar traps. The life history of this species is unknown as are the host species of its larvae.

<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 sericata</i> Species of moth

Ichneutica sericata is a moth of the family Noctuidae. It is endemic to New Zealand. This species is variable and difficult to distinguish from I. skelloni specimens. It is known from the southern part of the South Island and from Stewart Island. There has been one specimen collected in Taranaki but although Robert Hoare determined the species, he expressed reservations given the location of collection. I. sercata inhabits shrubland at altitudes of between 470 and 900m. The life history of this species is unknown as are the host species of its larvae. The adults of this species are on the wing in August at Stewart Island and in November and December in the South Island.

<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 hartii</i> Species of moth

Ichneutica hartii is a moth of the family Noctuidae. This species is endemic to New Zealand and can be found only in the North Island. I. hartii is similar in appearance to Ichneutica agrorastis but can be distinguished as it tends to be smaller in size and have a more purplish shade to its fore wings. I. hartii tends to be found inhabiting lowland native forest or forests found in the hilly ranges of the North Island. It is attracted to light and the adults of this moth are on the wing between January and March. Much of its life history is currently unknown as are the larvae host species.

<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 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 similis</i> Species of moth

Ichneutica similis is a moth of the family Noctuidae. It is endemic to New Zealand. This species is found only in certain parts of the North Island, in the western side of the South Island and on Stewart Island. It inhabits peatlands as well as inland and coastal wetlands. The life history of this species is unknown and the host species of its larvae has yet to be confirmed. It has been hypothesised that larval host species might be within the Empodisma genus as well as possibly the species Apodasmia similis.

<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 panda</i> Species of moth

Ichneutica panda is a species of moth in the family Noctuidae. It is endemic to New Zealand and only found in central and southern parts of the South Island. The species has not been collected in Canterbury since the late 1950s and has not been seen at The Wilderness scientific reserve since 1941. This species is similar in appearance to Ichneutica falsidica however I. panda lack or have indistinct black dashes on their edge of their hindwings. I. panda inhabit shrubland from alpine zones down to river terraces and adults are on the wing between December to February. The life history of this species is unknown as is the host species of the larvae.

<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 to January. The life history of the species and the host species of its larvae are unknown.

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

Ichneutica bromias is a moth of the family Noctuidae. This species is endemic to the Chatham Islands of New Zealand where is found on the Chatham, Pitt and Rangatira Islands. This species is similar in appearance to Ichneutica mutans but is darker and duller in its overall appearance. However, as I. mutans is not present in the Chathams this similarity is unlikely to cause confusion. The adults of the species are on the wing from November to March. The life history and the larval host species are unknown.

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

Ichneutica fenwicki is a moth of the family Noctuidae. This species is endemic to New Zealand and is found in the southern parts of the South Island and on Stewart Island. It is a distinctively coloured moth that is unlikely to be confused with closely related species. It is a spring flying moth being on the wing from September to November. The life history and host species of the larvae of I. fenwicki are unknown.

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

Ichneutica paracausta is a moth of the family Noctuidae. This species is endemic to New Zealand. It is found locally in the central North Island, is widespread in the South Island and can also be found in Stewart Island. I. paracausta is variable in colour, but as it has a distinctive black streak on its forewing as well as a wing pattern that is characteristic, I. paracausta is unlikely to be confused with other species. It is present on the North Island volcanic plateau as well as Little Bush Reserve in Hawkes Bay in the North Island as well as in tussock grassland, alpine and subalpine shrubland and in alpine forest. Larvae have been recorded as feeding on grasses, a pupa has been found in a cocoon under the bark of a tree and adult moths are on the wing from October to January.

<i>Physetica homoscia</i> Species of moth endemic to New Zealand

Physetica homoscia is a species of moth of the family Noctuidae. It is endemic to New Zealand and is found throughout New Zealand including in the Auckland Islands. This species inhabits places where its host plants are common and this includes costal dune habitat. It lives at a wide range of altitudes from sea-level up to at least 1750 m. The larvae of P. homoscia feed on Ozothamnus leptophyllus and Ozothamnus vauvilliersii. They are very active and drop to the ground when disturbed. Larvae are parasitised by a species of fly. This species pupates in the soil and the pupa life stage lasts for approximately 6 weeks. The adult moths are on the wing from September to June and are attracted to light. The adults of P. homoscia might possibly be confused with Ichneutica moderata however this latter species lacks the small white dots on the forewing veins of P. homoscia. Adults might also be confused with P. temperata but P. homoscia is significantly larger in size.

References

  1. 1 2 3 "Ichneutica agorastis (Meyrick, 1887)". www.nzor.org.nz. Retrieved 14 July 2021.
  2. 1 2 Meyrick, Edward (1887). "Monograph of the New Zealand Noctuina". Transactions and Proceedings of the New Zealand Institute. 19: 3–40 via Biodiversity Heritage Library.
  3. 1 2 3 Dugdale, J. S. (1988). "Lepidoptera - annotated catalogue, and keys to family-group taxa" (PDF). Fauna of New Zealand. 14: 202. Archived from the original (PDF) on 27 January 2019. Retrieved 24 January 2018.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 13 Hoare, Robert J. B. (9 December 2019). "Noctuinae (Insecta: Lepidoptera: Noctuidae) part 2: Nivetica, Ichneutica". Fauna of New Zealand. 80: 1–455. doi:10.7931/J2/FNZ.80.

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