They were already able to perceive polarized light [0], like many other arthropods, though AFAIK it's not clear what they normally use this perception for. [0]

They were already able to perceive polarized light [0], like many other arthropods, though AFAIK it's not clear what they normally use this perception for. [0]https://www.researchgate.net/publication/317167346_Head_tracking_response_in_Polyspilota_griffinii_demonstrates_polarisation_vision_in_a_praying_mantis_for_the_first_time https://www.researchgate.net/publication/317167346_Head_trac...