Question: what could be eating my begonia leaves?
Answer: Caterpillars, Earwigs and Other Pests Caterpillars and earwigs cause similar damage to slugs and snails. They eat small, rounded holes in the begonia's leaves. ... Whiteflies, spider mites, thrips, fungus gnats, shore flies and mealybugs all bother begonias. You can control these pests with insecticidal soap.