Week 2 Caterpillar

Its been 1 week since last post of my baby caterpillar.  Below is the picture showing how much our baby has grown in 1 week.  Notice the black trail behind it?  that is the skin that it molted out of.  The periods between molting (shedding of skin) is called instars.  The caterpillar goes through 5 instar stages before it makes a chrysalis