may be in a different orientation and the structures differ in shape.

Tympanal organs have evolved in Lepidoptera to allow them to detect the echolocation calls of predatory bats. The range of frequencies that the moth is most sensitive to is usually associated with the frequencies used in echolocation by the sympatric bat community. In the presence of predatory bats, it has been shown that the Lepidoptera species Mythimna unipuncta