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The red-headed mouse spider (''Missulena occatoria'') is found almost everywhere in Southern Australia,〔Platnick, N. I. 2012. (The world spider catalog ), version 13.0. American Museum of Natural History 〕 from open forests to desert shrublands. It is the largest (females up to 24 mm, males up to 12 mm) and most widely distributed ''Missulena'' species, because the spiderlings are wind-dispersed (ballooning). Normally this only occurs with araneomorph spiders, mygalomorph spiders normally disperse by walking. Mouse Spider venom may be very toxic, but few cases of serious envenomation have been recorded. Most recorded bites only caused minor effects, with funnel-web spider antivenom having proved effective as a treatment.〔Australian Museum: (Red-headed Mouse Spider, ''Missulena occatoria'' )〕 The spiders dig a burrow up to 55 cm deep, with two trapdoors. While the females are black with a red tinge, the males have a bright red head and jaws, and a gunmetal blue-black abdomen. ==External links== * (Information and pictures of ''M. occatoria'' ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Missulena occatoria」の詳細全文を読む スポンサード リンク
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