A male black spider is about half the size of the female. He has yellow and red bands and spots on his back.

• 雄性的黑寡妇蜘蛛的大小是雌蜘蛛的一半左右。背上有黄色和红色的条纹和斑点。小蜘蛛不管是雄性的还是雌性的都是桔黄色和白色。