What feature is essential for distinguishing an adult male spongy moth?

Answer

Distinctly feathery or comb-like antennae

Adult males possess distinctly feathery or comb-like antennae, which they use to detect pheromones released by the females. They also have creamy white to light tan wings with wavy, dark brown lines.

What feature is essential for distinguishing an adult male spongy moth?
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