8 Crazy Cool Caterpillars You Could Find in Your Backyard
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Polyphemus Moth
This unique caterpillar boasts a lime green hue and geometric shape instead of the usual rounded body. The adult moth is one of the largest in North America, with a wingspan of nearly 6 inches. Silk moths like the polyphemus don’t eat when they are adults, so their larvae are especially voracious. Polyphemus caterpillars grow up to 4 inches long.
Range: United States and lower Canada
Host Plants: Birch, willow, maple, oak and others
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Atala Hairstreak
As you might guess, its bright colors are a warning—this little creature carries toxins in its body, but it’s safe to touch. Atala butterflies were nearly wiped out in the 20th century due to habitat destruction, but they are making a comeback in southern Florida and spreading north. Newly hatched caterpillars are light tan and relatively unimpressive, but they grow into their fantastic color in a day or two.
Range: Southern Florida and a few Caribbean islands
Host Plants: Coontie and other cycads
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Question Mark
This insect is carpeted in tiny, nonvenomous spikes that make it an unfortunate mouthful for most predators to swallow. They also are smaller than most larvae shown here, topping out at about 13/4 inches long, and varying in color. The caterpillars are black with white or yellow lines and sport barbs ranging from yellow to orange to black. You’re most likely to find these spiny bugs in yards next to moist woodlands.
Range: Eastern and southern United States, west to Arizona
Host Plants: Elm, hackberry, nettles and hops
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