Chrysopidae possess which sensory adaptation to detect bat activity?

• A. Detecting pheromones in air
• B. Detecting water vibrations
• C. Tympanal organs near the base of the forewings
• D. Thermoreceptors on the antennae

Answer: (C)

Chrysopidae rely on ultrasonic hearing to detect approaching bats, which is why their specialized auditory organs are the key adaptation. They have tympanal organs near the base of the forewings that function as ears, vibrating in response to the ultrasonic echolocation calls bats use. This allows the lacewings to sense danger and execute quick escape maneuvers before the predator closes in. The other options don’t address predator-detection via sound: pheromones relate to mating signals, water vibrations aren’t relevant to a terrestrial aerial predator, and thermoreceptors on the antennae sense heat rather than ultrasonic cues.