flea

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Related to cat flea: human flea

flea,

common name for any of the small, wingless insectsinsect,
invertebrate animal of the class Insecta of the phylum Arthropoda. Like other arthropods, an insect has a hard outer covering, or exoskeleton, a segmented body, and jointed legs. Adult insects typically have wings and are the only flying invertebrates.
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 of the order Siphonaptera. The adults of both sexes eat only blood and are all external parasites of mammals and birds. Fleas have hard bodies flattened from side to side and piercing and sucking mouthparts. Their legs are powerful and adapted for fast movement and jumping, enabling them to find new hosts as well as to escape quickly the attempts of the hosts to remove them. The adults can survive away from a host for several weeks without eating. Flea eggs are usually laid in dirt or in the nest of the host; the larvae feed on organic material and the feces of adult fleas. Metamorphosismetamorphosis
[Gr.,=transformation], in zoology, term used to describe a form of development from egg to adult in which there is a series of distinct stages. Many insects, amphibians, mollusks, crustaceans, and fishes undergo metamorphosis, which may involve a change in habitat,
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 is complete; the larvae spin silken cocoons when ready to pupate. Many species are not specific to a particular host species, and cat and dog fleas, as well as the human flea of the warmer parts of Europe and Asia, attack humans. Certain rat fleas transmit typhustyphus,
any of a group of infectious diseases caused by microorganisms classified between bacteria and viruses, known as rickettsias. Typhus diseases are characterized by high fever and an early onset of rash and headache.
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 and bubonic plagueplague,
any contagious, malignant, epidemic disease, in particular the bubonic plague and the black plague (or Black Death), both forms of the same infection. These acute febrile diseases are caused by Yersinia pestis (Pasteurella pestis
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 to humans, and another species transmits tularemiatularemia
or rabbit fever,
acute, infectious disease caused by Francisella tularensis (Pasteurella tularensis). The greatest incidence is among people who handle infected wild rabbits.
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 from rabbits. Fleas also transmit several species of tapewormstapeworm,
name for the parasitic flatworms forming the class Cestoda. All tapeworms spend the adult phase of their lives as parasites in the gut of a vertebrate animal (called the primary host).
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 that sometimes infest humans. The chigoechigoe
or jigger,
small parasitic flea (Tunga penetrans) of the tropics and subtropics, including the S United States. Humans and their domestic animals are the main hosts.
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 is a flea. Water fleas and beach fleas are crustaceanscrustacean
, primarily aquatic arthropod of the subphylum Crustacea. Most of the 44,000 crustacean species are marine, but there are many freshwater forms. The few groups that inhabit terrestrial areas have not been particularly successful in an evolutionary sense; most require
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 and not closely related to the insects. Fleas are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Siphonaptera.

flea

[flē]
(invertebrate zoology)
Any of the wingless insects composing the order Siphonaptera; most are ectoparasites of mammals and birds.

flea

1. any small wingless parasitic blood-sucking insect of the order Siphonaptera, living on the skin of mammals and birds and noted for its power of leaping
2. any of various invertebrates that resemble fleas, such as the water flea and flea beetle
References in periodicals archive ?
Caption: The cat flea is most common flea in the United States.
Patterson, "Effect of methoprene and diflubenzuron on larval development of the cat flea (Siphonaptera: Pulicidae).," Journal of Economic Entomology, vol.
Lappin, "Evaluation of topical application of 10% imidacloprid-1% moxidectin to prevent Bartonella henselae transmission from cat fleas," Journal of the American Veterinary Medical Association, vol.
But cat fleas? All of a sudden, animal rights was put into perspective.
(6) Recently, a new transitional species of rickettsiae, Rickettsia felis transmitted by cat fleas, has been described that shares clinical and phylogenetic characteristics with both the SF and typhus groups.
Influence of temperature and humidity on survival and development of the cat flea, Ctenocephalides felis (Siphonaptera: Pulicidae).
Actually, most dogs have the cat flea, which will feed on both dogs and cats.
There also have been rare instances in which the infection has been directly transmitted from cats to humans via a cat flea bite, rather than a cat scratch.
A female cat flea lays one egg an hour, every hour of her adult life (which is usually about three months).
Most cat flea products state that they are safe for cats eight weeks old and older.
FLOUR MITE Actual size 0.66mm BLUEBOTTLE MAGGOT Actual size 20mm COMMON HOUSEFLY Actual size 10mm CAT FLEA Actual size 2.5mm