Wolf spider (babysitter spider) - Wolf spider (English spelling)

Japanese: コモリグモ(子守蜘蛛) - コモリグモ（英語表記）wolf spider

A general term for spiders belonging to the Lycosidae family. They are so named because they walk around with egg sacs attached to their silk warts and carry the hatched spiderlings on their back and ventral sides for a while. Some species that live underground do not exhibit this babysitting behavior. Their body length varies from 5 to 15 mm, and they have three claws at the end of their walking legs. Some spiders, like the grass spider, spin webs, showing their affinities with web-building spiders, but most of them hunt by walking around without spinning webs, and like jumping spiders, their courtship behavior relies on their sense of sight.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

コモリグモ科Lycosidaeに属するクモの総称。卵囊を糸疣（しゆう）につけて歩き回り，かえった子グモをしばらく腹背にのせておく習性をもつのでこの名がついた。地中に住居をつくる種類ではこのような子守行動をもたないものもある。体長は5～15mmと大きさはまちまちで歩脚末端につめが3本あり，中にはクサグモのように網を張るものがあるなど造網性のクモとの類縁を示すが，大部分は網を張らずに歩き回って捕食をし，またハエトリグモと同様に視覚に依存した求愛行動を行う。

出典　株式会社平凡社世界大百科事典第２版について　情報

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