The star-tongued gulper lost the front legs and "wings" because it doesn't need them anymore. For balance, the star-tongued gulper uses its long tail. For stability, the legs evolved "wooden bones" inside. These happen to divide into two pieces, so that the legs can be bent backwards. The tongue formed a star-like tip at the end, which allows the star-tongued gulper to grab worms and podions and feed them to the mouth. Because the tongue is now mostly outside the body, it obtained thicker and drier skin, so now it can't be used for tasting anymore. Instead, the tasting cells evolved into smelling cells, and the star-tongued gulper uses its tongue for rummaging in the foliage for worms and podions. Though they don't hunt twelve-winged worms actively, they won't condemn them if they find one.