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Water spider: Difference between revisions
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[[File:Aquatica.jpg|thumb|150px|left|''A. Aquatica'' roaming around.]] | [[File:Aquatica.jpg|thumb|150px|left|''A. Aquatica'' roaming around.]] | ||
The body is greatly adapted to the water. Fine setae covers the opisthosoma which is used as an aquatic | The body is greatly adapted to the water. Fine setae covers the opisthosoma which is used as an aquatic | ||
lung that allows the spider to breathe | lung that allows the spider to breathe underwater by the setae trapping an air bubble against the spider's body and connected to the tracheal spiracles. The oxygen in the water surrounding the air-bell is diffused which can be exchanged in the tracheal system the normal way. [[Oxygen]] and [[Carbon dioxide]] can be increased and decreased so that the air bubble replenishes it's air [http://www.americanarachnology.org/JoA_Congress/JoA_v30_n2/arac-30-02-189.pdf 2]. The female water spiders can grow to 8mm all the way to 15mm, the male can grow up to 9mm to 12mm and are both light to dark yellow-brown. Although the female has a greater range, the male tends to be bigger to some degree than the females in most cases [http://www.the-piedpiper.co.uk/th11f(5).htm 3]. | ||
Like every other spider, the water spider has a cephalothorax and an abdomen. Every part of a normal spider internally is the same as the water spider. Externally the water spider has the fine setae that help the air bubble surround the spider [http://frank.itlab.us/zoo/spider_anatomy.gif 9]. | Like every other spider, the water spider has a cephalothorax and an abdomen. Every part of a normal spider internally is the same as the water spider. Externally the water spider has the fine setae that help the air bubble surround the spider [http://frank.itlab.us/zoo/spider_anatomy.gif 9]. | ||
