Circular Polarization Insensitivity in Scarab Beetles with Circularly Polarizing Exocuticle

Anomala corpulenta scarab beetles possess metallic green, left-circularly-polarizing exocuticle. In laboratory choice experiments, the mating behaviour of this species was not influenced by circular polarization (CP). Until now, no evidence has been found for behavioural responses to CP light in Anomala vitis, Anomala dubia, Anomala corpulenta (Rutelinae), Cetonia aurata and Protaetia cuprea (Cetoniinae) in the family Scarabaeidae (Coleoptera), all possessing metallic green, left-circularly-polarizing exocuticle.