Day 4: July 26, 2020 4:04 PM
About 6 hours after hatching began, a tiny caterpillar has emerged. There is no sign of the egg shell, which was probably eaten by the caterpillar. At this point, it does not have the colored bands typical of monarch butterfly caterpillars. The length and width were estimated by image analysis. The volume was estimated from the length and width, assuming a cylindrical shape. Length=2.41 mm. Width=0.58 mm. Volume=0.63 cubic mm.