poisonous io moth caterpillars

actias animal antheraea attractive backyard bug butterfly catepillar caterpillar chomping cluster colony control crawl crawly creepy critter deadly destructive eating florescent flower green group insect leaves luna lunar maple moth nature oak pest plant poisonous polyphemus predator prey protection scary silk silkworm slimy spiky spines stick strange sweetgum tree venom venomous weird wild wildlife worm