retinulae
/rɪˈtɪnjəli/
noun
- Plural of retinula; multiple small groups of light-sensitive cells in compound eyes.
- Damage to the retinulae can impair an insect's ability to detect movement.
- The retinulae of different insect species vary in the number of cells they contain.
- Each compound eye is made up of thousands of ommatidia, each containing its own retinulae.