Ufeus faunus is a moth in the Noctuidae family. It is found in the south-western United States, from south-western California to southern New Mexico. The length of the forewings is 15–17 mm for males and 17–19 mm for females. Both sexes have pale buffy-brown forewings with black defining a zigzagged antemedial line and a toothed postmedial line with dark shading and streaks in the outer half of the terminal area. In females there usually is a thin dark streak extending from the reniform spot to the postmedial line and, in extreme forms, from the antemedial line into the subterminal area. In both sexes the hindwing is translucent white with some buffy-brown shading on the terminal line.