lucifugal
/luːˈsɪfjʊɡəl/
adjective
- Avoiding or shunning light; tending to stay in darkness.
- Some insects are lucifugal, hiding under rocks when the sun rises.
- The lucifugal behavior of the worm makes it hard to study during the day.
- Many cave-dwelling creatures are lucifugal and only come out in total darkness.
Synonyms