Cricket Meaning In Bengali – Crickets are orthopteran insects related to bush crickets and, more distantly, to grasshoppers. In older literature such as Imms,
“Crickets” were placed at the family level (ie Gryllidae), but contemporary authorities, including Otte, now place them in the superfamily Gryloidea.
Cricket Meaning In Bengali
Crickets have mainly cylindrical bodies, round heads and long antennae. Behind the head is a smooth and firm pronotum. Abdominal pain in long cerci pair; Females have a long, cylindrical ovipositor. Diagnostic features include legs with 3-segmented tarsi; Like many Orthoptera, the hind legs have large shins that provide power for jumping. The forewings are hard, leathery like the elytra, and some parrots do this by rubbing their parts together. Hind wings folded and folded, not used for flight; However, most species are flightless. The largest members of the family are the bull crickets, Brachytropes, up to 5 cm (2 in).
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Crickets are distributed worldwide except at latitudes of 55° or higher, with the greatest diversity occurring in the tropics. They are found in a variety of habitats, from grasslands, thickets and forests to swamps, beaches and caves. Crickets are primarily nocturnal, and while some species are silent, males are known for their loud, constant, chirping songs when trying to attract females. Singing species have good hearing through the tympana on the toes of the forelegs.
Crickets often appear as characters in literature. The Talking Cricket is based on Carlo Collodi’s 1883 children’s book The Adventures of Pinocchio and the films based on the book. The insect appears in Charles Dix’s 1845 The Cricket on the Hearth and George Seld’s 1960 The Cricket in Times Square. Crickets are celebrated in the poetry of William Wordsworth, John Keats and Du Fu. They are kept as pets in countries from China to Europe, sometimes to fight crickets. Crickets are efficient in converting their food into body mass, making them a candidate for food production. They are used as human food in Southeast Asia, where they are sold as fried snacks in markets. They are also used to feed carnivorous pets and zoo animals. In Brazilian folklore, crickets are represented as signs of various events.
Crickets are small to medium-sized insects with mostly cylindrical and somewhat vertically flattened bodies. The head is spherical with long sludder antennae arising from cone-shaped scapes (first segments) and behind these are two large compound eyes. There are three ocelli (normal eyes) on the forehead. Pronotum (first thoracic segment) trapezoidal in shape, robust and well sclerotized. It is smooth and has no dorsal or lateral keels (ridges).
A pair of long cerci at the end of abdomen (pair of appendages at posterior point), in female, ovipositor cylindrical, long, narrow, smooth and shiny. The femora (third segments) of the hind legs are too large for jumping. The tibiae (fourth segments) of the hind legs are armed with several movable spurs, the arrangement of which is characteristic of each species. The tibia of the forelegs have one or more tympani, which are used to receive sound.
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Wings extend over the body and vary greatly between species, being reduced in size in some parrots and absent in others. The forewings have elytra, made of hard chitin, which act as a protective covering for the soft parts of the body and, in males, carry the stridulatory organs for sound production. The rear pair folds into a fan below the front wings. Wings are not adapted to flight in many species.
The largest members of the family are the 5 cm (2 in) long bull crickets (Brachytropes), which dig burrows a meter or more deep. Tree crickets (Oecanthinae) are delicate white or pale green insects with transparent forewings, while field crickets (Gryllinae) are robust brown or black insects.
Crickets have a cosmopolitan distribution in all parts of the world except for colder regions above 55° north and south latitudes. They colonized many islands, large and small, sometimes transported to these locations by flying or floating logs across the ocean or by human activity. The greatest diversity is found in tropical regions such as Malaysia, where 88 species of chirps have been heard from one location near Kuala Lumpur. A higher number of Perst may be due to the fact that some species are silent.
Crickets are found in many habitats. Members of several subfamilies are found in the upper canopies and shrubs among grasses and herbs. They occur on the ground and in caves, and some dig underground, shallow or deep burrows. Some make their homes out of rotting wood, and some beach-dwelling species can run across the water’s surface.
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Crickets are relatively harmless and delicate insects. Most species are nocturnal, hiding during the day in cracks, bark, curled leaves, rocks or fallen logs, leaf litter or crevices in the ground where they thrive in dry weather. Some dig their own shallow holes in rotting wood or underground and fold in their antennae to hide their front part. Some of these burrows are used as temporary shelters only for a day, while others serve as permanent habitats and places for mating and egg-laying. Crickets dig by loosening the soil with their mandibles, carrying it with their feet, moving it backwards with their hind legs, or pushing it with their heads.
Other defense strategies include hiding, fleeing, and attacking. Some species have adopted colors, shapes and patterns that make it difficult for hunters to spot them. They are dull browns, grays and grays that blend into their background, while desert species are pale. Some species can fly, but the flight mode of tides is idiosyncratic, so the most common response to danger is to flee to find a hiding place.
While some crickets have a weak bite, a member of the Australian Gryllacrididae or Raspy cricket has been found to have the best bite of any insect.
A male Gryllus cricket chirping: its head against its burrow; The skinned forewings (tegmina; singular “tegm”) are raised (in contrast to the more delicate hindwings) and scraped against each other to produce song (stridulation). The cavities act as resonators amplifying the sound.
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Most male crickets produce a loud chirping sound by stridulation (scraping two specially shaped body parts together). The stridulatory organ is located in the tegum or forewing and is leathery in structure. A large vein passes through the cter of each tegnum, along with comb-like serrations forming a file-like structure with a scraper at the posterior end of the tegnum. The tegmina is positioned at an angle to the body and rhythmically moves up and down, causing the scraper on one wing to slide against the file on the other. The ctral portion of the tegmin contains the “harp,” an area of dense, sclerotized membrane that resonates and amplifies the volume of sound like an air pocket between the tegmina and the body wall. Most female crickets lack the adaptations necessary to stridulate and therefore do not vocalize.
A variety of cricket songs are present in the repertoire of some species. The calling song attracts females and repels other males and is very loud. A courting song is used when a female cricket is nearby and encourages her to mate with the caller. After a successful mating a victory song is produced for a short period of time, and the mating is reinforced to encourage the female to lay a few eggs without finding another male.
An aggressive song is initiated by contact chemoreceptors on the antennae that detect the front of another male cricket.
Crickets spend at different rates depending on their species and their virion temperature. Most species molt at high temperatures (a typical species has 62 molts per minute at 13 °C (55 °F); each species has its own rate). The relationship between temperature and rate of evaporation is known as Dalbier’s Law. According to this rule, the temperature in degrees Fahrenheit is calculated by counting the number of chirps produced by the Snowy Tree Cricket, common in the United States, in 14 seconds and adding 40.
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In 1975 Dr. William H. Cade was attracted to the song of the parasitic tachinid fly cricket, Ormea ochracea, and used it to deposit male bird larvae in him. This is the first example of a natural emy using a mating signal to identify its host or prey.
Since then, many species of crickets have been found to harbor the same parasite or related species. In response to this selection pressure, a mutation was observed in a population of Teleogrillus oceanicus on the Hawaiian island of Kauai that rendered males unable to treat, allowing these crickets to evade their parasitic predators.
A different mutation with the same effect
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