Yellow Sac Spider   Print   |  Home  |  Close Window
     
Cheiracanthium punctorium, commonly known as the yellow sac spider, reaches a length of about 15 mm (a little more than 1/2 inch), and can penetrate human skin; the bite is similar to a wasp sting, perhaps a bit more severe, although susceptible persons can have stronger reactions, like nausea. Females build an eggsac of about 4 cm in high grass. It opens below and is aggressively defended.

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