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Poecilopachys australasia
''Poecilopachys australasia'' is an orb-weaving spider species. An immigrant from Australia, these nocturnal spiders have been recorded in New Zealand since the early 1970s. The common name is the Two spined Spider. The female is about 8 mm in length and when mature has two spines or horns. The females can be commonly found on the undersides of citrus tree leaves during the day 〔http://www.tepapa.govt.nz/ResearchAtTePapa/Enquiries/SpidersWeb/What/Pages/Twospined.aspx retrieved 2011〕 The male, lacks horns and is much smaller (2.5 mm - 3 mm in length) and looks very different. So different that it was first thought to be a different species and was named Cyrtarachne setosa 〔http://www.thebookshelf.auckland.ac.nz/docs/Tane/Tane-20/26%20Two-spined%20Australian%20Spider.pdf retrieved 2011〕
== Colouration and body hair ==
Bright colours characterize the adult females and various descriptions have been given. 1. The upper surface of the female's abdomen is yellow and olive with two white horn-like ‘spines' that give this spider its common name. Yellow and white bands and some red-brown markings are also visible (Te Papa, New Zealand).〔http://www.tepapa.govt.nz/ResearchAtTePapa/Enquiries/SpidersWeb/What/Pages/Twospined.aspx retrieved 2011〕 2. The female has two dorsal yellow and cream abdominal spines. The anterior (front) of the abdomen has a broad band of cream and yellow, an upward pointing chevron marking against a red/yellow background of the posterior abdomen.〔http://www.thebookshelf.auckland.ac.nz/docs/Tane/Tane-20/26%20Two-spined%20Australian%20Spider.pdf retrieved 2011〕
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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