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Redback spider
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===Web=== The redback is mainly nocturnal;<ref name="andrade1998"/> the female remains concealed during the day, and spins her web during the night,<ref name=SMH1907/> usually remaining in the same location for most of her adult life.<ref name=Andrade2002/> Classified as a gum-footed tangle web, the web is an irregular-looking tangle of fine but strong silk. Although the threads seem random, they are strategically placed for support and entrapment of prey.{{sfn|Brunet|1997|p=141}} The rear portion of the web forms a funnel-like retreat area where the spider and egg sacs are found. This area has vertical, sticky catching threads that run to ground attachments.<ref name="Amo-Redback"/> The vertical strands act as trip wires to initially alert the spider to the presence of prey or threats. They also snare and haul prey into the air when weaker horizontal strands that hold them down, known as [[Guy-wire|guy lines]], break when prey thrash around.<ref name=AWV_youtube>{{cite web|title=Web Design ... Redback Style|url=https://www.youtube.com/watch?v=tvjhc6BXQDM|publisher=Absolutely Wild Visuals|access-date=4 September 2013|date=4 July 2011|archive-date=21 September 2013|archive-url=https://web.archive.org/web/20130921064736/http://www.youtube.com/watch?v=tvjhc6BXQDM|url-status=live}}</ref> These webs are usually placed between two flat surfaces, one beneath the other.<ref>{{cite web |url=https://www.youtube.com/watch?v=bQABY9H1h1Y |title=Red Back Spider β Attenborough: Life in the Undergrowth |publisher=BBC Earth |author=Attenborough, David |date=28 August 2009 |access-date=4 September 2013 |archive-date=21 September 2013 |archive-url=https://web.archive.org/web/20130921064931/https://www.youtube.com/watch?v=bQABY9H1h1Y |url-status=live }}</ref> The female spends more time in the funnel and less time moving around during cooler weather.<ref name="Forster95">{{cite journal|last=Forster|first=Lyn|year=1995|title=The Behavioural Ecology of ''Latrodectus hasselti'' (Thorell), the Australian Redback Spider (Araneae: Theridiidae): a Review|journal=Records of the Western Australian Museum Supplement|volume=52|pages=13β24|issn=0313-122X}}</ref> The individual web filaments are quite strong, able to entangle and hold small reptiles.
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