Abraham Mignon
Marrel's stepdaughter Maria Sibylla Merian (1647–1717), daughter of the engraver Matthew Merian, who lived with Marrel and thus studied with Mignon, achieved distinction as a flower painter. Besides Merian, his other pupil was Ernst Stuven. He left two daughters when he died; Catharina and Anna.
Maria Sibylla Merian
Merian in her detailed studies made several other unique observations. In relation to larvae she recorded that "many shed their skins completely three or four times". She illustrated this with a drawing showing a shed exoskeleton. She also detailed the ways in which larvae formed their cocoons, the possible effects of climate on their metamorphosis and numbers, their mode of locomotion, and the fact that when caterpillars "have no food, they devour each other". Such information was recorded by Merian for specific species.