domatium
/doʊˈmeɪʃiəm/
noun
- A small, specialized structure on a plant (such as a hollow or a tuft of hairs) that provides shelter for insects or other small organisms.
- The acacia tree's domatia house ants that protect it from herbivores.
- Botanists found domatia on the underside of the leaves.
- Some plants grow domatia to attract beneficial insects.