Other butterflies will only lay eggs on specific plants such as the famous Monarch butterfly (Danaus plexippus), which lays eggs on, and whose caterpillars eat only Milkweed plants (Asclepias spp.). The female, after mating with a male, will seek out an appropriate host plant on which to lay her eggs.
The iliac crest is the curved superior border of the ilium, the largest of the three bones that merge to form the os coxa, or hip bone. It is located on the superior and lateral edge of the ilium very close to the surface of the skin in the hip region. When a person places their hands on their hips, it is the skin above the iliac crest that they rest their hands on.
The Iliac Crest skinfold is one of the commonest regions used to assess the amount of body fat in athletes. The top of the hip bone or the area just above the crest is checked for body fat examination. The arm adjacent to the crest should be kept away from the body to help in measuring Iliac Crest waist circumference.