When arctic woolly bear moths are exposed to bat - like ultrasound ( 26 kHz and 110 dB sound pressure level root mean square at 1m ) , males respond by reversing their flight course .
G. groenlandica , however , continues to possess this defensive behavior .
When arctic woolly bear moths are exposed to bat - like ultrasound ( 26 kHz and 110 dB sound pressure level root mean square at 1m ) , males respond by reversing G. groenlandica 's flight course .
G. groenlandica , however , continues to possess this defensive behavior .