Question: Huge 3–7 inch caterpillars (nickel-to-quarter thickness) on sidewalk near large front trees in Nevada (Yerington area). No garden nearby—alfalfa/onion fields. Look like curled leaves. Four found in a week. Not on tomato plants.
Several large caterpillars feed on tree leaves (not tomatoes). They're solitary and hard to spot in trees, but look for half-eaten leaves.
Photo ID is the only way to give accurate advice.
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