Zygoballus sexpunctatus is a species of jumping spider which occur in the southeastern United States where it can be found in a variety of grassy habitats . Adult spiders measure between 3 and 4 @.@ 5 mm in length . The cephalothorax and abdomen are bronze to black in color , with reddish brown or yellowish legs . The male have distinctive enlarged chelicerae ( the mouthparts used for grasping prey ) and front femora ( the third , and typically largest , leg segments ) . Like many jumping spiders , Z. sexpunctatus males exhibit ritualized courtship and agonistic behavior .