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Cricket (insect)

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Cricket (insect)

Common black cricket
(Gryllus assimilis (nl))
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Suborder: Ensifera
Superfamily: Grylloidea
Family: Gryllidae
Bolívar, 1878

See Taxonomy section

Crickets, family Gryllidae (also known as "true crickets"), are insects somewhat related to grasshoppers, and more closely related to katydids or bush crickets (family Tettigoniidae) and Weta (families Anostostomatidae and Rhaphidophoridae). They have somewhat flattened bodies and long antennae. There are more than 900 species of crickets.[1] They tend to be nocturnal[2] and are often confused with grasshoppers because they have a similar body structure including jumping hind legs. Crickets are not harmful to humans.

Cricket chirping

The sound emitted by crickets is commonly referred to as chirping; the scientific name is serration) much like a comb. The chirping sound is created by running the top of one wing along the teeth at the bottom of the other wing. As the male cricket does this, he also holds the wings up and open, so that the wing membranes can act as acoustical sails. It is a popular myth that the cricket chirps by rubbing its legs together.

There are four types of cricket song: The calling song attracts females and repels other males, and is fairly loud. The courting song is used when a female cricket is near, and is a very quiet song. An aggressive song is triggered by chemoreceptors on the antennae that detect the near presence of another male cricket and a copulatory song is produced for a brief period after a successful mating.[3]

Crickets chirp at different rates depending on their species and the temperature of their environment. Most species chirp at higher rates the higher the temperature is (approximately 62 chirps a minute at 13°C in one common species; each species has its own rate). The relationship between temperature and the rate of chirping is known as Dolbear's Law. According to this law, counting the number of chirps produced in 14 seconds by the snowy tree cricket common in the United States and adding 40 will approximately equal the temperature in degrees Fahrenheit.[4]

Crickets, like all other insects, are cold-blooded. They take on the temperature of their surroundings. Many characteristics of cold-blooded animals, like the rate at which crickets chirp, or the speed at which ants walk, follow an equation called the tympanic membranes located just below the middle joint of each front leg (or knee). This enables them to hear another cricket's song.

The calling song of a field cricket.

In 1975, Dr. William H. Cade discovered that the parasitic tachinid fly Ormia ochracea is attracted to the song of the male cricket, and uses it to locate the male in order to deposit her larvae on him. It was the first example of a natural enemy that locates its host or prey using the mating signal.[5] Since then, many species of crickets have been found to be carrying the same parasitic fly, or related species. In response to this selective pressure, a mutation leaving males unable to chirp was observed amongst a population of field crickets on the Hawaiian island of Kauai, giving these crickets the obvious advantage of eluding their parasitoid opponents.

Diet and life cycle

Crickets are omnivorous scavengers who feed on organic materials, including decaying plant material, fungi, and some seedling plants. Crickets eat their own dead when there are no other sources of food available, and exhibit predatorial behavior upon weakened, crippled crickets.

Crickets have relatively powerful jaws, and several species have been known to bite humans.[6]

Crickets mate in late summer and lay their eggs in autumn. The eggs hatch in the spring and have been estimated to number as high as 200 per fertile female. Species Acheta domestica however lays eggs almost continually, with the females capable of laying at least twice a month. Female crickets have a long needle-like ovipositor.


African field cricket Gryllus bimaculatus

Subfamilies of the family Gryllidae:

In addition to the above subfamilies in the family Gryllidae, several other orthopteran groups outside of this family also may be called crickets:

Folklore and myths

The folklore and mythology surrounding crickets is extensive.[7] The singing of crickets in the folklore of Brazil and elsewhere is sometimes taken to be a sign of impending rain, or of a financial windfall. In Álvar Núñez Cabeza de Vaca's chronicles of the Spanish conquest of the Americas, the sudden chirping of a cricket heralded the sighting of land for his crew, just as their water supply had run out.[8] In Caraguatatuba, Brazil, a black cricket in a room is said to portend illness; a gray one, money; and a green one, hope.[8] In Alagoas state, northeast Brazil, a cricket announces death, thus it is killed if it chirps in a house.[9] In the village of Capueiruçu in Bahia State, a constantly chirping cricket foretells pregnancy, but if it pauses, money is expected.[10] The mole cricket locally known as "paquinha", "jeguinho", "cachorrinho-d'água", or "cava-chão" (genera Scapteriscus and Neocurtilla, Gryllotalpidae) is said to predict rain when it digs into the ground.[11] In Barbados, a loud cricket means money is coming in; hence, a cricket must not be killed or evicted if it chirps inside a house. However, another type of cricket that is less noisy forebodes illness or death.[12] In Zambia, the Gryllotalpa africanus cricket is held to bring good fortune to anyone who sees it.[13]

Crickets are popular pets and are considered good luck in some countries; in China, crickets are sometimes kept in cages.[14] It is also common to have them as caged pets in some European countries, particularly in the Iberian Peninsula. Cricket fighting as a gambling or sports betting pastime also occurs, particularly in China, Mexico and Southeast Asia.


Deep-fried Acheta domesticus at a market in Thailand

Various species of crickets are a part of people's diets in some countries, and are considered delicacies of high cuisine in certain countries. In Cambodia, Thailand and the southern part of Vietnam, cricket is commonly eaten as a snack. It is prepared by deep frying the soaked and cleaned insect in oil.

Crickets are popular as a live food source for carnivorous pets like frogs, lizards, tortoises, salamanders, wasps and spiders.

Feeding crickets with nutritious food in order to pass the nutrition onto animals that eat them is known as gut loading. In addition to this, the crickets are often dusted with a mineral supplement powder to ensure complete nutrition to the pet.

In popular culture

  • Since the days of radio entertainment, the sound of crickets chirping has been used as an indication that a scene is taking place late at night. In comedy formats, the sound of crickets may be used to humorously indicate a dead silence when a response, such as laughter after a punch line, is expected.[15] Similarly, in online communication, writers may use the concept of "crickets chirping" in a rhetorical sense to signal that the writer believes that he or she has made a point that a hypothetical opponent cannot answer. The space that would have been occupied by the nonexistent answer is instead occupied by the symbolic word *crickets* or *chirp chirp* to symbolize this silence.
  • Cricket is the name of a US children's literary magazine founded in 1973. Advanced concepts in the stories and poems are explained by a cast of insect and other small creatures drawn in the margins. The lead of these cartoon characters is Cricket, the magazine's namesake.


See also


  1. ^ Garber, Stephen (2013). The Urban Naturalist. Courier Dover Publications. p. 61. ISBN 0486148327
  2. ^ University of Arizona, Cricket Info
  3. ^ [1]
  4. ^ Urban Legends Reference Pages: Cricket Chirp Thermometer
  5. ^ Cade, W. H. 1975. Acoustically orienting parasitoids: Fly phonotaxis to cricket song. Science 190: 1312-1313.
  6. ^ J.R.S.C. (1879). Journal of Horticulture and Practical Gardening, Volume 37, p.503.
  7. ^ "Cricket singing means rain: semiotic meaning of insects in the district of Pedra Branca, Bahia State, northeastern Brazil" [2]
  8. ^ a b Lenko and Papavero 1996
  9. ^ Araújo 1977
  10. ^ K.L.G. Lima, unpublished data
  11. ^ Fowler 1994
  12. ^ Forde 1988
  13. ^ Mbata 1999
  14. ^ Carrera 1991
  15. ^ "Chirping Crickets" at TV Tropes
  • Gorochov, A.V. & Mostovski, M.B. 2008. Apterous crickets of the tribe Gryllini from South Africa and Namibia (Orthoptera: Gryllidae). African Invertebrates 49 (1): 109-121.
  • Lisa Gail Ryan, Berthold Laufer, Lafcadio Hearn (1996). Insect musicians & cricket champions: a cultural history of singing insects in China and Japan. China Books. ISBN 0-8351-2576-9.
  • Franz Huber, Thomas Edwin Moore, Werner Loher (1989). Cricket behavior and neurobiology. Cornell University Press. ISBN 0-8014-2272-8.

External links

  • The cricket suicide
  • Intro on house crickets
  • Singing Insects of North America An online field guide
  • house cricket on the UF / IFAS Featured Creatures Web site
  • tropical house cricket on the UF / IFAS Featured Creatures Web site
  • spp.Gryllusfield crickets, on the UF / IFAS Featured Creatures Web site
  • Web article: The recent evolution of a population of silent Hawaiian crickets
  • "Tuning in to Cricket Radio", John Himmelman, Berfrois
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