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Fleas are wingless insects, 1.5 to 3.3 millimetres (1 ⁄ 16 to 1 ⁄ 8 inch) long, that are agile, usually dark colored (for example, the reddish-brown of the cat flea), with a proboscis, or stylet, adapted to feeding by piercing the skin and sucking their host's blood through their epipharynx.
The human flea (Pulex irritans) – once also called the house flea [1] – is a cosmopolitan flea species that has, in spite of the common name, a wide host spectrum.It is one of six species in the genus Pulex; the other five are all confined to the Nearctic and Neotropical realms. [2]
There are more than 2,000 species of tiny (0.04 to 0.15 inches), wingless, blood-sucking fleas that live on the body of the host they infest. Although fleas cannot fly, they have developed ...
Cat fleas originated in Africa [4] but can now be found globally. [5] As humans began domesticating cats, the prevalence of the cat flea increased and it spread throughout the world. Of the cat fleas, Ctenocephalides felis felis is the most common, although other subspecies do exist, including C. felis strongylus, C. orientis, and C. damarensis ...
Snow flea is a common name for several arthropods, not including true fleas: Boreidae, a family of scorpionflies known as snow fleas in the British Isles, especially: Boreus hyemalis, a species of scorpionfly that crawls on snow; Hypogastrura nivicola, a species of springtail known as snow flea in North America
While not a flea, the biting insect no-see-ums (family Ceratopogonidae) are sometimes mistaken for sand fleas.These are small flies found in salt marshes and swamps that leave itchy bites. There ...