monarch butterfly caterpillars feed on a narrowleaf milkweed plant at twilight

black macro photography monarch butterflies yellow milkweed butterfly nature plant summer lepidopterology leaves larvae insects insect green banding caterpillar caterpillars closeup danaus plexippus animal banded milk weed natural outdoor spring leaf eat cycle creature chrysalis garden larva life lifecycle metamorphosis species stage wildlife pupae worm antennae beautiful bug