Neoscapteriscus abbreviatus | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Orthoptera |
Suborder: | Ensifera |
Family: | Gryllotalpidae |
Genus: | Neoscapteriscus |
Species: | N. abbreviatus |
Binomial name | |
Neoscapteriscus abbreviatus (Scudder, 1869) | |
Synonyms [1] | |
Scapteriscus abbreviatusScudder, 1869 |
Neoscapteriscus abbreviatus (syn. Scapteriscus abbreviatus), the short-winged mole cricket, is a species of insect in the mole cricket family, Gryllotalpidae. It is native to South America but has been introduced inadvertently into Florida, in the United States. Unlike other related species, it is unable to fly, nor do the males emit songs in order to attract females.
Neoscapteriscus abbreviatus is a medium-sized mole cricket with a length of from 22 to 29 mm (0.9 to 1.1 in). Its leathery forewings are shorter than its prothorax and its membranous hind wings are shorter than its forewings, rendering it unable to fly. [2] Members of this genus are characterized by having two sharp claws and a blade-like process with a sharp edge on their forelegs. Other mole crickets have three or four claws. [3] S. abbreviatus can be distinguished from the other members of its genus found in Florida, S. borellii and S. vicinus , by examining the two claws on its front leg. They diverge slightly and the distance between them at the base is equal or greater than the size of a claw base. The other two species have forewings that are longer than their prothorax, and hindwings that exceed the length of their abdomens. [2]
Neoscapteriscus abbreviatus is native to South America where it is found in eastern Brazil. It is now also present in Central America and the West Indies. The type locality is Pernambuco in Brazil. [4] It was accidentally introduced into Florida, United States, around 1900, probably with turf, manure or live plant material. It is mostly found in coastal regions and digs its burrows in sandy soils in grassland, fields, verges, turf and lawns. [2]
Mole crickets cause more damage to turf than do other insects in Florida. In 1988, it was reported that some forty million dollars was spent each year on mole cricket control in the state, the main species targeted being S. abbreviatus and S. vicinus. It was customary to use organophosphates to control them, but these have fallen out of favour on environmental grounds. Fenoxycarb, a juvenile hormone analogue has been researched and was found to greatly reduce the number of eggs produced by each female S. abbreviatus. [5]
Biological pest control has also been used, with the introduction into Florida of certain natural enemies to the mole crickets from South America. The parasitoid wasp Larra bicolor deposits larvae on adult mole crickets and the fly Ormia depleta acts in a similar manner, laying eggs on them; in both cases, the developing larvae devour the tissues of the host. The mole cricket nematode (Steinernema scapterisci) liberates a bacterium which causes sepsis and death to its host mole cricket. [6]
Mole crickets are members of the insect family Gryllotalpidae, in the order Orthoptera. Mole crickets are cylindrical-bodied, fossorial insects about 3–5 cm (1.2–2.0 in) long as adults, with small eyes and shovel-like fore limbs highly developed for burrowing. They are present in many parts of the world and where they have arrived in new regions, may become agricultural pests.
Ensifera is a suborder of insects that includes the various types of crickets and their allies including: true crickets, camel crickets, bush crickets or katydids, grigs, weta and Cooloola monsters. This and the suborder Caelifera make up the order Orthoptera. Ensifera is believed to be a more ancient group than Caelifera, with its origins in the Carboniferous period, the split having occurred at the end of the Permian period. Unlike the Caelifera, the Ensifera contain numerous members that are partially carnivorous, feeding on other insects, as well as plants.
Gryllotalpa major,also known as the Prairie Mole Cricket, is endemic to the United States and is the largest cricket in North America. Its natural habitat is temperate grassland and it belongs to the family Gryllotalpidae. It is threatened by habitat loss, and is currently only found in Oklahoma, Kansas, Missouri, Nebraska and Arkansas. Males of this species produce sounds by rubbing their fore wings together. They sing from special burrows they construct in the prairie soil to attract females for mating, and they can be heard at distances up to 400 m from the burrow. Males aggregate their acoustic burrows in a lek arena and are very sensitive to vibrations carried through the ground. Males communicate with neighboring males through vibrational signals, and the songs they project to flying females are harmonic chirps, rather than the trills produced by most mole crickets.
Larra bicolor is a parasitoid wasp native to South America. It was introduced into Florida as a biological pest control of invasive mole crickets.
Crickets are orthopteran insects which are related to bush crickets, and, more distantly, to grasshoppers. In older literature, such as Imms, "crickets" were placed at the family level, but contemporary authorities including Otte now place them in the superfamily Grylloidea. The word has been used in combination to describe more distantly related taxa in the suborder Ensifera, such as king crickets and mole crickets.
Sam W. Heads is a British palaeontologist, a Fellow of the Linnean Society of London, a Fellow of the Royal Entomological Society, as well as a former Officer and Editor-in-Chief at the Orthopterists' Society.
Pheropsophus aequinoctialis is a species of ground beetle from Central and South America that feeds as larvae on the eggs of mole crickets but as an adult is a generalist feeder.
Gryllus rubens, commonly known as the southeastern field cricket, is one of many cricket species known as a field cricket. It occurs throughout most of the Southeastern United States. Its northern range spans from southern Delaware to the extreme southeastern corner of Kansas, with a southern range stretching from Florida to eastern Texas.
The Tridactylidae are a family in the insect order Orthoptera. They are small, mole-cricket-like insects, almost always less than 20 mm (0.79 in) long when mature. Generally they are shiny, dark or black, sometimes variegated or sandy-coloured. They commonly live in short tunnels and are commonly known as pygmy mole crickets, though they are not closely related to the true "mole crickets" (Ensifera), as they are included in the Caelifera suborder.
Scapteriscus is a genus of insects in the family Gryllotalpidae, the mole crickets. Members of the genus are called two-clawed mole crickets. They are native to South America. Some species have arrived in other regions, including parts of North America, where some have become invasive and have become established as pests.
Grylloidea is the superfamily of insects, in the order Orthoptera, known as crickets. It includes the "true crickets", scaly crickets, wood crickets and other families, some only known from fossils.
Steinernema scapterisci, the mole cricket nematode, is a species of nematode in the order Rhabditida. It is a parasite of insects in the order Orthoptera, the grasshoppers, crickets and their allies. Native to southern South America, it was introduced into Florida in the United States in an effort to provide a biological control of pest (Neoscapteriscus) mole crickets.
Ormia depleta, sometimes called the Brazilian red-eyed fly, is a species of fly in the family Tachinidae. It is a parasitoid of mole crickets in the genus Scapteriscus. It is native to South America but has been imported into the United States and elsewhere as a biological pest control agent.
Neoscapteriscus vicinus, commonly known as the tawny mole cricket, is a species of insect in the mole cricket family, Gryllotalpidae. This species is native to South America and also occurs in the Southern United States, where it arrived as a contaminant of ship's ballast around 1900. Colombian insect taxonomist Oscar Cadena-Castañeda studied specimens of the genus which had been called Scapteriscus, and decided that it included two groups; a smaller group and a larger group that he named Neoscapteriscus in 2015. North American mole cricket taxonomists agreed with his decision and altered Orthoptera Species File Online accordingly.
Scapteriscus borellii, the southern mole cricket, is a species of insect in the family Gryllotalpidae. It is native to South America but is also present in the southern United States where it was introduced around 1900.
Gryllus firmus, commonly known as the sand field cricket, is a species of cricket in the subfamily Gryllinae. It is found in the southeastern United States.
The New Zealand mole cricket is a wingless member of the mole cricket family Gryllotalpidae. Endemic to New Zealand, it lives underground and is rarely seen. It is now restricted to parts of the southern North Island.
Neoscapteriscus borellii, the southern mole cricket, is a species of mole cricket in the family Gryllotalpidae.
Neoscapteriscus is a genus of two-clawed mole crickets in the family Gryllotalpidae. At least 23 described species are placed in Neoscapteriscus.
The Gryllotalpoidea are a superfamily of insects that includes the mole crickets and the ant crickets. The type genus is Gryllotalpa.