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Brief Summary

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The owlets belong to a very large family of moths with more than 25,000 known species. They are stoutly built. The front wings are often somber while the hind wings are sometimes very brightly colored. When resting, owlets fold their wings as a roof above their body or flatten them, overlapping one another. You see a silver-y in the picture above, named after the silvery-colored y-shaped marking on its wings. Silver-y moths are also active during the day. Owlet caterpillars are usually plump and have few hairs.
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Noctuidae

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The Noctuidae, commonly known as owlet moths, cutworms or armyworms, are a family of moths. They are considered the most controversial family in the superfamily Noctuoidea because many of the clades are constantly changing, along with the other families of the Noctuoidea.[1][2][3] It was considered the largest family in Lepidoptera for a long time, but after regrouping Lymantriinae, Catocalinae and Calpinae within the family Erebidae, the latter holds this title now.[4] Currently, Noctuidae is the second largest family in Noctuoidea, with about 1,089 genera and 11,772 species.[5] This classification is still contingent, as more changes continue to appear between Noctuidae and Erebidae.

Description

Noctuidae wings venation
Noctuidae wings venation

Adult: Most noctuid adults have wings with a variety of shades of browns, grays, and other varied shades and colourations but some subfamilies, such as Acronictinae and Agaristinae, are very colorful, especially those from tropical regions (e.g. Baorisa hieroglyphica). They are characterized by a structure in the metathorax called the nodular sclerite or epaulette, which separates the tympanum and the conjunctiva in the tympanal organ. It functions to keep parasites (Acari) out of the tympanal cavity. Another characteristic in this group is trifine hindwing venation, by reduction or absence of the second medial vein (M2).[6]

Markings present on the wings of noctuid adults can be helpful in distinguishing species. From the basal location to the outer edge (proximal to distal) on the forewing, there is a claviform (club-shaped) stigma, horizontally oriented with the thicker end closer to the wing's outer edge, located posterior to a discal (round) stigma.[7] These are followed distally by a reniform (kidney-shaped) stigma,[8] which is typically oriented with its concave side facing the wing's outer edge. It is often not possible to discern all of the stigmata on all specimens or species.[7] Crossbands or crosslines may be present, oriented longitudinally from the leading to the trailing edge of the wing.[8]

Larva: Commonly green or brown; some species present bright colors, such as the camphorweed cucullia moth (Cucullia alfarata). Most are pudgy and smooth with rounded short heads and few setae, but there are some exceptions in some subfamilies (e.g. Acronictinae and Pantheinae).[9]

Pupa: The pupae most often range from shiny brown to dark brown. When they newly pupate they are bright brownish orange, but after a few days start to get darker.

Eggs: Vary in colors, but all have a spherical shape.

Etymology

The word Noctuidae is derived from the name of the type genus Noctua, which is the Latin name for the little owl, and the patronymic suffix -idae used typically to form taxonomic family names in animals.[10]

The common name "owlet" originally means a small or young owl. The names "armyworms" and "cutworms" are based on the behavior of the larvae of this group, which can occur in destructive swarms and cut the stems of plants.[11]

Ecology

Distribution and diversity

Setaceous Hebrew character

This family is cosmopolitan and can be found worldwide except in the Antarctic region. Some species, such as the setaceous Hebrew character (Xestia c-nigrum), can be found in the Arctic Circle, specifically in the Yukon territory of western Canada, with an elevation 1,702 m above sea level, where the temperature fluctuates between 23/-25 °C (73/-13 °F).[12] Many species of dart moths have been recorded in elevations as high as 4,000 m above sea level (e.g. Xestia elisabetha).[13] Among the places where the number of species has been counted are North America and northern Mexico, with about 2,522 species. 1,576 species are found in Europe, while the other species are distributed worldwide.[3][14][15][16][17]

Mutualism

A Lychnis moth caterpillar feeding on the seeds of red campion (Silene dioica).

Members of Noctuidae, like other butterflies and moths, perform an important role in plant pollination. Some species have developed a stronger connection with their host plants. For example, the lychnis moth (Hadena bicruris) has a strange mutualistic relationship with pink plants or carnation plants (Caryophyllaceae), in that larvae feed on the plant while the adults pollinate the flowers.[18]

The eight-spotted forester moth (Alypia octomaculata) puddling on water from a leaf of firebush (Croton lucidus).

Food guilds

Herbivory: Caterpillars of most Noctuidae feed on plants; some feed on poisonous plants and are unaffected by their chemical defences; for example, the splendid brocade moth (Lacanobia splendens) feeds on cowbane (Cicuta virosa), a plant that is notoriously toxic to vertebrates.[19]

Predation and cannibalism: During the larval stage, some cutworms readily feed on other insects. One such species is the shivering pinion (Lithophane querquera), whose larvae commonly feed on other lepidopteran larvae.[20] Moreover, many noctuid larvae, such as those of the fall armyworm (Spodoptera frugiperda) and of genera such as Heliothis and Helicoverpa, aggressively eat their siblings and often other species of caterpillar.[21]

Nectarivory and puddling: Like many Lepidoptera, many species of adult Noctuidae visit flowers for their nectar. They also seek other liquid food resources such as plant juices, honeydew, dung, urea and mud, among others.[22]

As is common in members of the order Lepidoptera, courtship in many Noctuidae includes a set of movements in which the female evaluates the male's reproductive fitness.[22]

Most noctuid moths produce pheromones that attract the opposite sex. Female pheromones that attract males occur widely and have long been studied, but the study of male pheromones has further to go.[22][23][24]

Reproduction

Lesser yellow underwing

Noctuid moths commonly begin the reproductive season from spring to fall, and mostly are multivoltine, such as the eastern panthea moth (Panthea furcilla), which reproduces over the year.[25] Nevertheless, some species have just one brood of offspring (univoltine); among the best known is the lesser yellow underwing (Noctua comes).[25]

Defense

Xanthopastis timais (Cramer), feeding on amaryllis
The Spanish moth feeding on Amaryllis sp.

This group has a wide range of both chemical and physical defenses. Among the chemical defenses three types stand out. First, the pyrrolizidine alkaloid sequestration usually present in Arctiinae is also found in a few species of noctuids, including the Spanish moth (Xanthopastis timais).[26] Another chemical defense is formic acid production, which was thought to be present only in Notodontidae, but later was found in caterpillars of Trachosea champa.[27] Finally, the last type of chemical defense is regurgitation of plant compounds, often used by many insects, but the cabbage palm caterpillar (Litoprosopus futilis) produces a toxin called toluquinone that deters predators.[28]

On the other hand, the main physical defense in caterpillars and adults alike is mimicry. Most owlet moths have drab colors with a variety of patterns suitable to camouflage their bodies.[25] The second physical defense consists in thousands of secondary setae that surround the body. The subfamilies that present this mechanism are Pantheinae and Acronictinae. The third is aposematism, represented by species of Cucullinae.[25] Finally, all adults have another mechanism for defense: a tympanal organ available to hear the echolocation spread out by bats, so the moths can avoid them.[29]

Human importance

The Old World bollworm caterpillar feeding on a strawberry.

Agriculture

Many species of owlet moths are considered an agricultural problem around the world. Their larvae are typically known as "cutworms" or "armyworms" due to enormous swarms that destroy crops, orchards and gardens every year. The Old World bollworm (Helicoverpa armigera) produces losses in agriculture every year that exceed US$2 billion.[30] Additionally, the variegated cutworm (Peridroma saucia) is described by many as one of the most damaging pests to vegetables.[31]

In West Africa, species including Busseola fusca, Heliocheilus albipunctella, Sesamia calamistis, Helicoverpa armigera, and Spodoptera exempta are major pests of staple crops such as pearl millet, sorghum, and maize.[32]

Systematics

Since molecular analysis began to play a larger role in systematics, the structure of many Lepidoptera groups has been changing and Noctuidae is not an exception. Most recent studies have shown that Noctuidae sensu stricto is a monophyletic group, mainly based on trifine venation. Some clades within Noctuidae sensu lato have yet to be studied. This taxonomic division represents the subfamilies, tribes and subtribes considered so far.[1][14][33][34]

Family Noctuidae Latreille, 1809
Subfamily Acontiinae Guenée, 1841
Tribe Acontiini Guenée, 1841
Tribe Armadini
Tribe Chamaecleini
Subfamily Acronictinae Harris, 1841
Subfamily Aediinae
Subfamily Agaristinae Boisduval, 1833
Subfamily Amphipyrinae Guenée, 1837
Tribe Amphipyrini Guenée, 1837
Tribe Psaphidini Grote, 1896
Subtribe Feraliina Poole, 1995
Subtribe Nocloina Poole, 1995
Subtribe Psaphidina Grote, 1896
Subtribe Triocnemidina Poole, 1995
Subfamily Bagisarinae Crumb, 1956
Subfamily Balsinae Grote, 1896
Subfamily Bryophilinae Guenée, 1852
Subfamily Cobubathinae Wagner & Keegan, 2021
Subfamily Condicinae Poole, 1995
Tribe Condicini Poole, 1995
Tribe Leuconyctini Poole, 1995
Subfamily Cropiinae Keegan & Wagner, 2021
Subfamily Cuculliinae Herrich-Schäffer, 1850
Subfamily Dilobinae
Subfamily Dyopsinae
Subfamily Eriopinae Herrich-Schäffer, 1851
Subfamily Eucocytiinae
Subfamily Eustrotiinae Grote, 1882
Subfamily Grotellinae
Subfamily Heliothinae Boisduval, 1828
Subfamily Metoponiinae Herrich-Schäffer, 1851
Tribe Cydosiini Kitching & Rawlins, 1998
Subfamily Noctuinae Latreille, 1809
Tribe Actinotiini Beck, 1996
Tribe Apameini Guenée, 1841
Tribe Arzamini Grote, 1883
Tribe Caradrinini Boisduval, 1840
Subtribe Athetiina Fibiger & Lafontaine, 2005
Subtribe Caradrinina Boisduval, 1840
Tribe Dypterygiini Forbes, 1954
Tribe Elaphriini Beck, 1996
Tribe Episemini
Tribe Eriopygini Fibiger & Lafontaine, 2005
Tribe Glottulini Guenée, 1852
Tribe Hadenini Guenée, 1837
Tribe Leucaniini Guenée, 1837
Tribe Noctuini Latreille, 1809
Subtribe Agrotina Harris, 1841
Subtribe Axyliina
Subtribe Noctuina Latreille, 1809
Tribe Orthosiini Guenée, 1837
Tribe Phlogophorini Hampson, 1918
Tribe Phosphilini Poole, 1995
Tribe Prodeniini Forbes, 1954
Tribe Pseudeustrotiini Beck, 1996
Tribe Tholerini Beck, 1996
Tribe Xylenini Guenée, 1837
Subtribe Antitypina Forbes & Franclemont, 1954
Subtribe Cosmiina Guenée, 1852
Subtribe Ufeina Crumb, 1956
Subtribe Xylenina Guenée, 1837
Subfamily Oncocnemidinae Forbes & Franclemont, 1954
Subfamily Pantheinae Smith, 1898
Subfamily Plusiinae Boisduval, 1828
Tribe Abrostolini Eichlin & Cunningham, 1978
Tribe Argyrogrammatini Eichlin & Cunningham, 1978
Tribe Plusiini Boisduval, 1828
Subtribe Autoplusiina Kitching, 1987
Subtribe Euchalciina Chou & Lu, 1979
Subtribe Plusiina Boisduval, 1828
Subfamily Raphiinae
Subfamily Stiriinae
Tribe Annaphilini
Tribe Stiriini Grote, 1882
Subtribe Annaphilina Mustelin, 2006
Subtribe Azeniina Poole, 1995
Subtribe Grotellina Poole, 1995
Subtribe Stiriina Grote, 1882

Genera with intervening taxonomy not available include:

References

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  11. ^ Rice, Marlin E. (1 January 2004). "Armyworm defoliating young corn". Integrated Crop Management News.
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  18. ^ Bopp, Sigrun; Gottsberger, Gerhard (1 January 2004). "Importance of Silene latifolia ssp. alba and S. dioica (Caryophyllaceae) as Host Plants of the Parasitic Pollinator Hadena bicruris (Lepidoptera, Noctuidae)". Oikos. 105 (2): 221–228. doi:10.1111/j.0030-1299.2004.12625.x. JSTOR 3548083.
  19. ^ Jacobs, Maarten (2005). "Lacanobia splendens, a new species for the Belgian fauna (Lepidoptera: Noctuidae)" (PDF). Phegea. 33 (3): 83–85.
  20. ^ Schweitzer, D. F. (1 January 1979). "Predatory behavior in Lithophane querquera and other spring caterpillars". Journal of the Lepidopterists' Society. ISSN 0024-0966.
  21. ^ Chapman, Jason W.; Williams, Trevor; Martínez, Ana M.; Cisneros, Juan; Caballero, Primitivo; Cave, Ronald D.; Goulson, Dave (1 January 2000). "Does Cannibalism in Spodoptera frugiperda (Lepidoptera: Noctuidae) Reduce the Risk of Predation?". Behavioral Ecology and Sociobiology. 48 (4): 321–327. doi:10.1007/s002650000237. JSTOR 4601817. S2CID 3947934.
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  26. ^ Vilanova, Cristina; Baixeras, Joaquín; Latorre, Amparo; Porcar, Manuel (1 January 2016). "The Generalist Inside the Specialist: Gut Bacterial Communities of Two Insect Species Feeding on Toxic Plants Are Dominated by Enterococcus sp". Frontiers in Microbiology. 7: 1005. doi:10.3389/fmicb.2016.01005. ISSN 1664-302X. PMC 4923067. PMID 27446044.
  27. ^ Nakamura, M. (1998). "The eversible cervical gland and the chemical component of its secretion in noctuid larvae" (PDF). Transactions of the Lepidopterological Society of Japan. 49: 85–92.
  28. ^ Smedley, Scott R.; Ehrhardt, Elizabeth; Eisner, Thomas (1993). "Defensive Regurgitation by a Noctuid Moth Larva (Litoprosopus futilis)". Psyche: A Journal of Entomology. 100 (3–4): 209–221. doi:10.1155/1993/67950. ISSN 0033-2615.
  29. ^ Kristensen, Niels (1 January 2003). Handbook of Zoology. Vol. 2: Morphology, Physiology, and Development. Walter de Gruyter. ISBN 9783110893724.
  30. ^ Narayanamma, V. Lakshmi; Sharma, H. C.; Gowda, C. L. L.; Sriramulu, M. (1 December 2007). "Incorporation of lyophilized leaves and pods into artificial diets to assess the antibiosis component of resistance to pod borer Helicoverpa armigera (Lepidoptera: Noctuidae) in chickpea" (PDF). International Journal of Tropical Insect Science. 27 (3–4): 191–198. doi:10.1017/S1742758407878374. ISSN 1742-7592. S2CID 86757646.
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  34. ^ Wagner, David L.; Keegan, Kevin; Bugh, Valerie G. (2019). "A Tale of Two Caterpillars and Reclassification of Cerathosia Smith and Cydosia Duncan [& Westwood] (Lepidoptera: Noctuidae)". Journal of the Lepidopterists' Society. 73 (1): 1. doi:10.18473/lepi.73i1.a1.

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Noctuidae: Brief Summary

provided by wikipedia EN

The Noctuidae, commonly known as owlet moths, cutworms or armyworms, are a family of moths. They are considered the most controversial family in the superfamily Noctuoidea because many of the clades are constantly changing, along with the other families of the Noctuoidea. It was considered the largest family in Lepidoptera for a long time, but after regrouping Lymantriinae, Catocalinae and Calpinae within the family Erebidae, the latter holds this title now. Currently, Noctuidae is the second largest family in Noctuoidea, with about 1,089 genera and 11,772 species. This classification is still contingent, as more changes continue to appear between Noctuidae and Erebidae.

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