Divided-compound-eyes
Guides
Dineutus sublineatus
whirligig beetle
Dineutus sublineatus is a species of whirligig beetle in the family Gyrinidae, found in Central America and the Southwestern United States. Like other members of its genus, it possesses two separate pairs of compound eyes—one pair viewing above and one below the water surface—an adaptation for simultaneous aerial and underwater vision. Neuroanatomical studies have shown this species exhibits a unique sensory modality switch: its mushroom body calyces, brain structures typically associated with olfactory processing in insects, receive exclusive visual input from the dorsal eye optic lobes rather than olfactory input.