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Flea legs end in strong claws that are adapted to grasp a host. [1] Unlike other insects, fleas do not possess compound eyes but instead only have simple eyespots with a single biconvex lens; some species lack eyes altogether. [2] Their bodies are laterally compressed, permitting easy movement through the hairs or feathers on the host's body.
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 ]
They are one of the largest representatives of flea beetles and with Podontia lutea adults being around 2 centimeters long, it is reputed that it is the largest flea beetle species in the world. [3] They are distinguished from other genera in the Blepharida-group by their bifurcate prosternum, saddle-shaped mesosternum and strongly inwardly ...
Daphnia magna is a typical water flea of the genus Daphnia. The females reach up to 5 mm in size, the males about 2 mm, thus they are among the largest species in the genus. [ 2 ] The body is protected by a translucent carapace made of chitin , a transparent polysaccharide. [ 3 ]
Belostomatidae is a family of freshwater hemipteran insects known as giant water bugs or colloquially as toe-biters, Indian toe-biters, electric-light bugs (because they fly to lights in large numbers), alligator ticks, or alligator fleas (in Florida).
Insect morphology is the study and description of the physical form of insects.The terminology used to describe insects is similar to that used for other arthropods due to their shared evolutionary history.
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The name sand flea is misleading, though, because these talitrid amphipods are not siphonapterans (true fleas), do not bite people, and are not limited to sandy beaches. [ 1 ] Marine amphipods are often washed up in the strandline , but die rapidly on drying out.