Cricket (insect)
1
Cricket (insect)
Cricket
Common black cricket
(Gryllus assimilis)
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Orthoptera
Superfamily:
Grylloidea
Family:
Gryllidae
Bolívar, 1878
Subfamilies
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 about 900 species of
crickets. They tend to be nocturnal[1] and are often confused with grasshoppers because they have a similar body
structure including jumping hind legs. Crickets are harmless to humans.
Cricket chirping
The sound emitted by crickets is commonly referred to as chirping; the scientific name is stridulation. Only the male
crickets chirp. The sound is emitted by the stridulatory organ, a large vein running along the bottom of each wing,
covered with "teeth" (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 he does this, the cricket 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.
Cricket (insect)
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.[2]
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.[3]
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 Arrhenius equation. This equation describes the activation energy or threshold energy required
to induce a chemical reaction. For instance, crickets, like all other organisms, have many chemical reactions
occurring within their bodies. As the temperature rises, it becomes easier to reach a certain activation or threshold
energy, and chemical reactions, like those that occur during the muscle contractions used to produce chirping,
happen more rapidly. As the temperature falls, the rate of chemical reactions inside the crickets' bodies slow down,
causing characteristics, such as chirping, to also slow down.
Crickets have tympanic membranes located just below the middle joint of each front leg (or knee). This enables them
to hear another cricket's song.
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.[4] 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.[5]
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.[citation needed] Species Acheta domestica however lays eggs almost
continually, with the females capable of laying at least twice a month. Female crickets have a long needlelike
egg-laying organ called an ovipositor.
Crickets are popular as a live food source for carnivorous pets like frogs, lizards, tortoises, salamanders, 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.
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Cricket (insect)
3
Taxonomy
Subfamilies of the family Gryllidae:
• Eneopterinae – (true) bush crickets, not to be
confused with the katydid family, in British English
also called bush crickets
• Gryllinae – common or field crickets; brown or
black; despite the name, some of them enter houses
(e.g. Acheta domesticus, the house cricket). This
family includes the genera Gryllus, Platygryllus,
Acheta and Gryllodes.
• Nemobiinae – ground crickets
• Oecanthinae – tree crickets; usually green with
broad, transparent wings; frequent trees and shrubs.
• Phalangopsinae - spider crickets
• Podoscirtinae – anomalous crickets
African field cricket Gryllus bimaculatus
• Pteroplistinae
• Trigonidiinae – sword-tail crickets
In addition to the above subfamilies in the family Gryllidae, several other orthopteran groups outside of this family
also may be called crickets:
•
•
•
•
•
•
•
•
Cave crickets - also called camel crickets
Jerusalem crickets / Sand crickets
Mogoplistidae – scaly crickets
Mole crickets
Mormon crickets
Myrmecophilidae – ant crickets
Parktown prawns
Tettigoniidae – katydids or bush crickets
Folklore and myths
The folklore and mythology surrounding crickets is extensive.[6] 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.[7] In Caraguatatuba, Brazil, a black cricket in a room is said
to portend illness; a gray one, money; and a green one, hope.[7] In Alagoas state, northeast Brazil, a cricket
announces death, thus it is killed if it chirps in a house.[8] In the village of Capueiruçu in Bahia State, a constantly
chirping cricket foretells pregnancy, but if it pauses, money is expected.[9] 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.[10] 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.[11] In Zambia, the Gryllotalpa africanus cricket is held to bring good
fortune to anyone who sees it.[12]
Crickets are popular pets and are considered good luck in some countries; in China, crickets are sometimes kept in
cages.[13] 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.
Cricket (insect)
4
Consumption
Various species of crickets are a part of people's diets in some countries, and are considered delicacies of high
cuisine in places like Mexico. In Cambodia and southern part of Vietnam, cricket is well known as a delicious food.
It is prepared by deep frying the soaked and cleaned insect in oil.
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.[14] 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.
• The Walt Disney Company has used a number of notable cricket characters in their animated movies. In the
1940s Pinocchio, Jiminy Cricket becomes the title character's conscience, and in Mulan, Cri-kee is carried in a
cage as a symbol of luck, as in many Asian countries.
• Chester Cricket is the main character in the children's book The Cricket In Times Square by George Selden, which
was named a Newbery Honor Book in 1961.
• The Crickets were the band of legendary rock and roll pioneer Buddy Holly. In Lubbock, Texas, Holly's home
town, a baseball team in the Texas-Louisiana League were called the Lubbock Crickets. "Cricket" is also
musician's slang for a harmonica. Van Morrison may be heard calling for the "cricket" in the studio version of
"Bright Side of the Road", introducing the harmonica solo.
• 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.
Gallery
Scanning electron micrograph of
a spiracle valve—the organ that
allows fresh air to pass into the
cricket's respiratory system
Gryllus
campestris female
juvenile form
A cricket
Two adult Acheta
domestica crickets feeding
Cricket (insect)
Cricket found in Kerala, India.
References
Notes
[1]
[2]
[3]
[4]
[5]
[6]
University of Arizona, Cricket Info (http:/ / insected. arizona. edu/ cricketinfo. htm)
(http:/ / www. accuracypluscalifornia. com/ pest-control-blog/ how-and-why-do-crickets-chirp/ 2011/ 02/ )
Urban Legends Reference Pages: Cricket Chirp Thermometer (http:/ / www. snopes. com/ science/ cricket. asp)
Cade, W. H. 1975. Acoustically orienting parasitoids: Fly phonotaxis to cricket song. Science 190: 1312-1313.
J.R.S.C. (1879). Journal of Horticulture and Practical Gardening, Volume 37, p.503.
"Cricket singing means rain: semiotic meaning of insects in the district of Pedra Branca, Bahia State, northeastern Brazil" (http:/ / www.
scielo. br/ scielo. php?script=sci_arttext& pid=S0001-37652006000100007)
[7] Lenko and Papavero 1996
[8] Araújo 1977
[9] K.L.G. Lima, unpublished data
[10] Fowler 1994
[11] Forde 1988
[12] Mbata 1999
[13] Carrera 1991
[14] "Chirping Crickets" (http:/ / tvtropes. org/ pmwiki/ pmwiki. php/ Main/ ChirpingCrickets) at TV Tropes
Bibliography
• Gorochov, A.V. & Mostovski, M.B. 2008. Apterous crickets of the tribe Gryllini from South Africa and Namibia
(Orthoptera: Gryllidae) (http://www.africaninvertebrates.org.za/GorochovMostovski_49_1_2008_188.aspx).
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 (http://books.google.com/books?id=25M5mMH4qfQC). China
Books. ISBN 0-8351-2576-9.
• Franz Huber, Thomas Edwin Moore, Werner Loher (1989). Cricket behavior and neurobiology (http://books.
google.com/books?id=nAP2LkQV0X0C). Cornell University Press. ISBN 0-8014-2272-8.
5
Cricket (insect)
External links
• The cricket suicide (http://en.ird.fr/the-media-library/videos-on-line-canal-ird/a-manipulative-parasite/
a-manipulative-parasite)
• Intro on house crickets (http://www.the-piedpiper.co.uk/th2f.htm)
• Singing Insects of North America (http://buzz.ifas.ufl.edu/) An online field guide
• house cricket (http://entomology.ifas.ufl.edu/creatures/misc/crickets/Adomest.html) on the UF / IFAS
Featured Creatures Web site
• tropical house cricket (http://entomology.ifas.ufl.edu/creatures/misc/crickets/Gsigilla.html) on the UF /
IFAS Featured Creatures Web site
• field crickets, Gryllus spp. (http://entomology.ifas.ufl.edu/creatures/misc/crickets/Gryllus.html) on the UF /
IFAS Featured Creatures Web site
• Web article: The recent evolution of a population of silent Hawaiian crickets (http://whyfiles.org/296evolution/
index.php?g=5.txt) WhyFiles.org
• "Tuning in to Cricket Radio" (http://www.berfrois.com/2011/03/tuning-in-to-cricket-radio/), John
Himmelman, Berfrois (http://www.berfrois.com/)
6
Article Sources and Contributors
Article Sources and Contributors
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Image Sources, Licenses and Contributors
file:Snodgrass Gryllus assimilis.png Source: http://en.wikipedia.org/w/index.php?title=File:Snodgrass_Gryllus_assimilis.png License: Public Domain Contributors: Dysmorodrepanis, Eveha,
Ghouston, Pengo, Thiotrix, 1 anonymous edits
File:Red Pencil Icon.png Source: http://en.wikipedia.org/w/index.php?title=File:Red_Pencil_Icon.png License: Creative Commons Zero Contributors: User:Peter coxhead
File:african.field.cricket.arp.jpg Source: http://en.wikipedia.org/w/index.php?title=File:African.field.cricket.arp.jpg License: Public Domain Contributors: Arpingstone, Kevmin, Rocket000
File:Spiraclevalves.jpg Source: http://en.wikipedia.org/w/index.php?title=File:Spiraclevalves.jpg License: Creative Commons Attribution-Sharealike 2.5 Contributors: Chsh, 1 anonymous
edits
File:Gryllus campestris MHNT.jpg Source: http://en.wikipedia.org/w/index.php?title=File:Gryllus_campestris_MHNT.jpg License: Creative Commons Attribution-Sharealike 3.0
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File:Cricket900ppx crop.jpg Source: http://en.wikipedia.org/w/index.php?title=File:Cricket900ppx_crop.jpg License: Creative Commons Attribution-Sharealike 3.0 Contributors: Fastily;
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File:Tettigoniidae unknown.jpg Source: http://en.wikipedia.org/w/index.php?title=File:Tettigoniidae_unknown.jpg License: Creative Commons Attribution-Sharealike 3.0 Contributors:
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