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Aega antarctica
''Aega antarctica'' is a species of isopod crustacean. It is a temporary ectoparasite of fish, feeding on the fish's blood and then dropping to the seabed to digest its meal over a period of several months. It is found in the seas around Antarctica.
==Description==
''Aega antarctica'' can grow to a length of up to but most individuals are less than long. This isopod is an elongate oval when viewed from above and has two large compound eyes and two pairs of antennae. The first pair of antennae are short with thirteen whip-like segments (known as articles) and the second pair longer with fifteen articles. The long slender maxillae and mandible are specialised for puncturing the skin of the host fish. There are seven free thoracic segments, the first three with a pair of short pereiopods (legs) ending in hooked claws. The pleotelson consists of five partially fused abdominal segments each with a pair of short pleopods (legs). The pleotelson is bent slightly downwards and ends in a pointed terminal segment, the telson, which bears a pair of appendages, the uropods. The last three thoracic segments, the pleopods and the uropods are clothed in setae (bristles) on the margins.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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