challenge: What characteristic did Anton Ausserer use to erect the genus Ischnocolus in 1872?
  
  A. The presence of a specific pattern on the spider's abdomen
  B. The shape of the spider's pedipalps
  C. The coloration of the spider's cephalothorax
  D. The division of the scopulae on the tarsi of the third and fourth legs
  Answer: 