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Dimidamus dimidiatus (Simon, 1897)

A small to medium red and black spider found in Queensland and NSW, with a red posterior half of the abdomen. The adult female has red patellas of the pedipalps and the legs. Trochanta of all legs and femurs of leg IV are also red. The legs are otherwise mostly black, especially the front legs. The peanut shaped abdomen is shiny black with a red rear end (a bit more than a third of the length). The abdomen is widest about where it joins the cephalothorax when looked at from above. The legs are slender and quite long. The cephalothorax is bright red. These spiders have small sheet webs in moister areas including rainforests. The species was first described as Nicodamus dimidiatus by Simon in 1897. It was changed to Dimidamus dimidiatus by Harvey in 1995. Dimidamus dimidiatus occurs as far north as Jimna State Forest, Queensland, and as far south as Myall Lakes, New South Wales. Adults have been collected mostly from July to December, with fewer records from March to June. (Harvey 1995).

Female from above on bark


Dimidamus dimidiatus
Photo: Dr Greg Anderson

Female from above slightly facing on bark


Dimidamus dimidiatus
Photo: Dr Greg Anderson

Female from above on leaf


Dimidamus dimidiatus
Photo: Dr Greg Anderson

References


  • Harvey 1995 - The Systematics of the Spider Family Nicodamidae (Araneae : Amaurobioidea) Invertebr. Taxon., 1995,9,279-386
 

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