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[[Image: flea.jpg|thumb|right|250px|Robert Hooke's famous flea from Micrographia]]
[[Image: flea.jpg|thumb|right|250px|Robert Hooke's famous flea from Micrographia]]
[[Image:Flea Diagram.jpg|thumb|right|150px|Flea Diagram - Wikimedia Commons]]
[[Image:Flea Diagram.jpg|thumb|right|150px|Flea Diagram - Wikimedia Commons]]
=Overview=
Fleas make up the taxonomical order ''Siphonaptera'' containing approximately 2500 species all of which are very similar in morphology. All are obligate blood feeders, which is apparent in the morphology of the mouthparts. Though they are all small, between 1 and 6mm, there is considerable sexual dimporphism, the females being larger than the males. The body of the flea is laterally flattened
The terms '''ctenidia''' and '''combs''' can be used interchangably for spines on the head/thorax. Spines on the cheeks are referred to as '''genal''' and spines on the thorax are called '''pronotal''' combs. The presence and location of the chitinous spines are important in differentiating between the different flea species. The chitinous anal struts are also used for identification and help the flea larvae with vigorous motility.
The terms '''ctenidia''' and '''combs''' can be used interchangably for spines on the head/thorax. Spines on the cheeks are referred to as '''genal''' and spines on the thorax are called '''pronotal''' combs. The presence and location of the chitinous spines are important in differentiating between the different flea species. The chitinous anal struts are also used for identification and help the flea larvae with vigorous motility.
[[Category:Fleas]]
[[Category:Fleas]]
[[Category:To_Do_-_Parasites]]
[[Category:To_Do_-_Parasites]]
[[Category:To_Do_-_NickJ]]
[[Category:To_Do_-_NickJ]]