Dragonfly head, note yellow pigment in dorsum of compound eye
Image: Wernet & Colleagues*
The eye of the dragonfly is specialized for tracking and capturing fast flying insect prey. Tracking requires a rapid rate of signaling. A notable feature of the dragonfly eye is the yellow pigment in the upper half of the eye that is absent in the lower half of the eye. What does the yellow pigment do?
Insect photoreceptors have proteins called rhodopsins that exist in two states, rhodopsin and…
Source: Living With Insects Blog