Crassa unitella
Crassa unitella
Larva • Late September. In decaying debris under bark of dead tree stump. • © Ian Smith

28.014 BF642

Crassa unitella

(Hübner, 1796)


Wingspan 12-16 mm.

This species is locally common in southern England, and occurs more scarcely as far north as Lancashrie and Yorkshire. It is rather less colourful than its close relatives lambdella and lunaris.

The adult flies from late June to August and sometimes comes to light It is associated with wooded areas because the larvae, late September to May, feed on fungus on and under dead bark.


  • More details »