a group of io moth caterpillars on a leaf.

actias animal antheraea attractive automeris backyard branch bulls bullseye catepillar caterpillar caterpillars cluster covered crawl crawly creeping creepy critter destructive eating endemic florescent green group insect leaf leaves luna lunar maple moth nature oak pest poisonous polyphemus scary silk silkworm spiky spines strange sweetgum weird wild wildlife willow worm zephyr