Ichneutica semivittata

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Ichneutica semivittata
Tmetolophota semivittata male.jpg
Male
Tmetolophota semivittata 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. semivittata
Binomial name
Ichneutica semivittata
(Walker, 1865) [1]
Synonyms [2]
  • Leucania semivittataWalker, 1865
  • Tmetolophota semivittata(Walker, 1865)

Ichneutica semivittata is a moth of the family Noctuidae. [1] 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.

Contents

Taxonomy

This species was first described by Francis Walker in 1865 using a male specimen collected in Nelson by T. R. Oxley. [2] Walker originally named the species Leucania semivittata. [3] J. S. Dugdale discussed this species in his 1988 catalogue and placed it within the Tmetolophota genus. [4] In 2019 Robert Hoare undertook a major review of New Zealand Noctuidae. [2] During this review the genus Ichneutica was greatly expanded and the genus Tmetolophota was subsumed into that genus as a synonym. [2] As a result of this review, this species is now known as Ichneutica semivittata. [2]

Description

Ichneutica semivittata illustrated by George Hudson Fig 21 Pl 4 New Zealand Moths and Butterflies (1898) (cropped).jpg
Ichneutica semivittata illustrated by George Hudson
Living specimen of Ichneutica semivittata Ichneutica semivittata 96859355.jpg
Living specimen of Ichneutica semivittata

George Hudson described the larvae of I. semivittata as follows:

The larva, which feeds on native grasses, is about 1+14 inches in length, subcylindrical, slightly tapering at each end; dull green, very finely streaked with reddish-brown; the dorsal and subdorsal lines are indicated by fine double reddish lines; there is a series of white dots, one on each segment, except on the second and last; the lateral line is very distinct, dark reddish-brown, shaded with cream colour below; the spiracles are blackish; the underside of the larva and the whole of the second segment is a paler and clearer green than the rest of the body. [5]

Walker described the adults of this species as follows:

Male, Very pale fawn-colour. Palpi hardly ascending, as long as the breadth of the head; second joint fringed beneath; third lanceolate, less than half the length of the second. Antennae setose. Abdomen extending somewhat beyond the hind wings. Wings with black marginal points. Fore wings acute, with a short black basal line ; the latter is accompanied by an ochraceous line which extends irregularly along the hind side of a brownish streak in the disk ; this streak is traversed by a curved line of black points ; veins towards the exterior border brownish, with brownish lines between them ; under side with a brownish patch in the disk beyond the middle. Hind wings brownish above, except along the interior border. Length of the body 9 lines ; of the wings 22 lines. [3]

The wingspan of the adult male of this species is between 30 and 42 mm and for the female is between 31 and 40 mm. [2] This species is distinctive and can be distinguished from other species as it has a reddish ochreous streak on the forewing. [2] 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 on to three spots located behind the middle of the forewing in comparison to the 8 or 9 of I. semivittata. [2]

Distribution

It is endemic to New Zealand. [6] The species can be found from Three Kings Islands down to and including Stewart Island. [2]

Habitat

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. [2] It is relatively rare in the tussock grasslands of the MacKenzie country and in Canterbury. [2]

Behaviour

Adults of this species are on the wing from August to April and are attracted to light. [2]

Life history and host species

Carex secta a larval host species of I. semivittata Carex secta 53528960.jpg
Carex secta a larval host species of I. semivittata

Larval host species include Juncus procera , Carex secta as well as on tussock grasses such as Poa cita , P. colensoi and Festuca novae-zelandiae . [2]

Related Research Articles

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

Ichneutica lignana is a moth of the family Noctuidae. It is endemic to New Zealand. This species is found on the Three Kings Islands as well as the North, South and Stewart Islands. This species lives in a variety of habitats including coastal areas, tussock grasslands, shrublands, and native forest, at a range of altitudes from sea level to over 1300 m. I. lignana is quite distinctive in appearance with its dark markings on the abdomen and forewings although it is possible to confuse Ichneutica morosa, Meterana pansicolor and Meterana pascoi with this species. Adults are on the wing throughout the year in the northern parts of the New Zealand but are restricted to the months of October to April in the more southern parts of the country.

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

Ichneutica insignis is a moth of the family Noctuidae. It is endemic to New Zealand. This species is found throughout New Zealand, although it appears to be scarce in inland sites of tussock grasslands. The adults are on the wing throughout the year. It is a variable species and as such can be easily confused with I. skelloni and I. plena. The larvae of this species have been recorded as feeding on Trifolium pratense.

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

Ichneutica ustistriga is a moth of the family Noctuidae. It is endemic to New Zealand and can be found from the Three Kings Islands to Stewart Island. This species lives in a wide variety of habitats including domestic gardens, horticultural areas, orchards, native and exotic grasslands, as well as native forest. The larvae eat a variety of herbaceous plants. Recorded food plants include Muehlenbeckia australis, Muehlenbeckia complexa, Olearia hectorii, and Plantago lanceolata. This moth has a mauvish grey wing colour and is unlikely to be confused with other species as the patterns on its forewing are distinctive. This species is on the wing throughout the year and is attracted to both sugar and light traps. Adult moths can be found at rest on fences and tree trunks during the day.

<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 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 pagaia</i> Species of moth

Ichneutica pagaia is a moth of the family Noctuidae. I. pagaia is endemic to New Zealand and can only be found on the Snares Islands. This species is unlikely to be confused with moths with a similar appearance as it is the only noctuid found in the Snares Islands. Its preferred habitat is tussock grasslands and the hosts for its larvae are likely Poa astonii and Poa tennantiana. Adults of this species are on the wing from November to February.

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

Ichneutica sulcana, the dark underwing wainscot, is a moth of the family Noctuidae. It is endemic to New Zealand and can be found throughout the North, South and Stewart Islands at a range of altitudes from the lowlands to the alpine zone. This species prefers to live in native grass, shrub and wetland habitats as well as in native forest. The larval host plants of this species are forest grasses and sedges and larvae have been reared on Microlaena avenacea and species within the genus Carex. The larva pupates in the soil. Adults are on the wing from December to May but have also been recorded in August and September in the northern parts of the North Island. They are attracted to sugar traps as well as to light. I. sulcana and I. supersulcana are very similar in appearance but can be distinguished as there are differences in the male abdomen and genitalia of the two species. Also these two species do not appear to share a range as I. supersulcana seems to prefer to live at higher altitudes than I. sulcana. I. sulcana might also be confused with I. semivittata but I. sulcana is a larger species with a much darker abdomen and hindwing, and has only 1 to 3 dots on the forewing postmedian line.

<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 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 marmorata</i> Species of moth

Ichneutica marmorata is a moth of the family Noctuidae. This species is endemic to New Zealand and can be found in the North Island at the Tongariro National Park and at Puketitiri near the Kaweka Range. In the South Island it is widespread. It prefers alpine to subalpine habitat but occurs down to sea level altitudes in more southern locations. Adults are on the wing from late October to February. Larvae of this species may use tussock grasses in the genus Chionochloa as their host and they have been reared on Festuca novae-zelandiae.

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

Ichneutica disjungens is a moth of the family Noctuidae. This species is endemic to New Zealand and can be found on the central volcanic plateau of the North Island and in the eastern as well as the south western parts of the South Island. I. disjungens inhabits tussock grasslands in the alpine and subalpine zones. The hosts of the larvae of this species include Poa cita, P. colensoi, and Festuca novae-zelandiae. The adults of this species are distinctive and are unlikely to be confused with other species. They are on the wing between October and March.

<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>Ichneutica infensa</i> Species of moth

Ichneutica infensa is a moth of the family Noctuidae. This species is endemic to New Zealand. It is found throughout the North and South Islands but appears to be rarely seen or collected in the north and west parts of the North Island. As at 2019 the northern limit to the range of this species is Titirangi. I. infensa inhabits tussock grasslands and native forest. Larvae are nocturnal and its host plants are in the genus Carex including Carex solandri. Larvae have also been raised on Bromus catharticus. Adults of this species are on the wing from late October to February. Adults are narrow winged with patterns on the forewings that are relatively distinctive. However this species can possibly be confused with I. inscripta.

Ichneutica supersulcana is a moth of the family Noctuidae. This species is endemic to New Zealand and is only known from the Tararua Ranges and at Tongariro National Park. This species has been collected in subalpine tussock grasslands as well as subalpine shrubland and at the margins of Fuscospora cliffortioides forest. 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 February and are attracted to light. It appears to be restricted to higher altitudes in comparison to its close relative I. sulcana.I. sulcana and I. supersulcana are very similar in appearance with no reliable visible differences between the two having been discovered. However, there are distinct differences in the male abdomen and genitalia of these two species.

References

  1. 1 2 "Ichneutica semivittata (Walker, 1865)". www.nzor.org.nz. 2021. Retrieved 2021-08-06.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 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.
  3. 1 2 Walker, Francis (1865). "Catalogue of Lepidoptera Heterocera". List of the Specimens of Lepidopterous Insects in the Collection of the British Museum. XXXII: supplement, part 2: 323–706 via Biodiversity Heritage Library.
  4. Dugdale, J. S. (1988). "Lepidoptera - annotated catalogue, and keys to family-group taxa" (PDF). Fauna of New Zealand. 14: 210. Archived from the original (PDF) on 27 January 2019. Retrieved 24 January 2018.
  5. Hudson, G. V. (1928). The Butterflies and Moths of New Zealand. Wellington: Ferguson & Osborn Ltd. p. 53. OCLC   25449322.
  6. "Ichneutica semivittata (Walker, 1865)". nztcs.org.nz. 2021. Retrieved 2021-08-06.