Caterpillar is the common name for the larvae of members of the order Lepidoptera. As with most common names, the application of the word is arbitrary and the larvae of sawflies commonly are called caterpillars as well. Caterpillars of most species are herbivores, but not all; some are insectivorous, even cannibalistic. Some feed on other animal products. For example, clothes moths feed on wool, and horn moths feed on the hooves and horns of dead ungulates. Caterpillars as a rule are voracious feeders and many of them are among the most serious of agricultural pests
So, the correct answer is 'Caterpillar'