Chigger mites (trombiculid crickets) - Chigger mites

Japanese: ツツガムシ(恙虫) - ツツガムシ

A general term for mites belonging to the family Trombiculidae. Only the larvae (with three pairs of legs) parasitize on the surface of the body of mice and other animals, while the nymphs and adults (with four pairs of legs) live underground. More than 2,000 species have been found worldwide, and more than 80 species in Japan, but only a few of them transmit scrub typhus. In Japan, the mites that transmit scrub typhus are Akatsugamushi (red cricket), whose larvae appear in the summer in the Shinano River, Agano River, Mogami River, and Omono River basins; Tosatsugamushi (tosatsugamushi), whose larvae appear in the summer in some coastal areas of Shikoku; and Scutellaria scutellaria, whose larvae appear mainly in the fall and are scattered throughout Yamagata Prefecture and south, especially in the Izu Seven Islands.
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Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

ケダニ類ツツガムシ科に属するダニの総称。幼虫（脚は３対）だけがノネズミなどの体表に寄生し，若虫や成虫（脚は４対）は土中で自活する。世界で2000種以上，日本で約80種以上発見されているが，ツツガムシ病を媒介するものはその一部に限られる。日本でツツガムシ病を媒介するのは，信濃川，阿賀野川，最上川，雄物川流域で夏に幼虫が発生するアカツツガムシ（アカムシ），四国の海岸地方の一部で夏に幼虫が発生するトサツツガムシ，山形県以南の各地に散在し，特に伊豆七島に多く，主として秋に幼虫が発生するタテツツガムシである。
→関連項目ケダニ｜ダニ

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