two black and yellow monarch caterpillars crawling on a flower stem before turning into a butterfly

caterpillar monarch butterfly wild detail closeup striped caterpiller creature larvae metamorphosis macro larva fauna wildlife insect entomology plant green animal nature summer arthropod cycle garden metamorphism antennas outdoors colorful young milkweed natural beautiful endangered life reproduction lepidoptera stripes flower yellow vegetation asclepia leaf machaon close two worm background watercolor isolated