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Siphon (insect anatomy)
A siphon is a tubular organ of the respiratory system of some insects that spend a significant amount of their time underwater, that serves as a breathing tube.
The larvae of several kinds of insects, including mosquitoes, tabanid flies, and Belostomatidae) live in the water and breathe through a siphon.
Some adult insects which spend considerable time underwater have an abdominal breathing tube. For example adult water scorpions have the caudal process which consists of a pair of half-tubes capable of being locked together to form a siphon by means of which air is conducted to the tracheae at the apex of the abdomen when the tip of the tube is thrust above the surface of the water. In immature forms the siphon is undeveloped and breathing takes place through six pairs of abdominal sperms.〔Dr. Jonathan Wright (1997) (Water Scorpions ) Northern State University, South Dakota〕
==References==
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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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