The male of this common species has a brownish forewing that is quite variable but can be distinguished by a row of black dots along the edge of both fore- and hindwing. The similar looking Mottled Umber lacks these markings and are less conspicuous in the Scarce Umber.
Caterpillars can be found between April and mid-June. Overwinters as a pupa underground
Males come to light and sometimes in large numbers while the female can be found by day resting on tree-trunks.