What sex is your American Dagger caterpillar?

To determine the sex of an American Dagger caterpillar, you typically need to wait until it pupates and emerges as a moth, as the caterpillars do not exhibit obvious sexual dimorphism. Adult male and female moths can be distinguished by their size and antennae; males usually have larger, feathery antennae for detecting pheromones, while females are larger and have more slender antennae. Therefore, the sex of the caterpillar itself cannot be accurately identified until it becomes an adult moth.