I discovered that larger caterpillars in a terrarium will eat newly emerged smaller ones. I now keep each new caterpillar in a smaller cup till it is 1/2 inch long or so. I put a bit of paper towel in the bottom with a few drops of water for humidity and cover with a coffee filter secured by a rubber band. Each one is given a fresh milkweed leaf daily. I transfer by carefully cutting off the piece of leaf with the caterpillar and laying on the new leaf.
Interesting....I have never had this happen with my caterpillars. I put my caterpillars on a stem of milkweed in a narrow neck small vase. Sometimes I have 2 stems in the vase....maybe put the newly emerged on one stem and the larger caterpillars on a different stem. Just a thought.
Thanks for sharing your method.
Join in and write your own page! It's easy to do. How? Simply click here to return to Monarch Butterfly Stories.