Aporophyla lutulenta, also known as the deep brown dart, is a moth of the family Noctuoidea.

The species was first described by Michael Denis and Ignaz Schiffermüller in 1775.

Forewing fuscous brown with a purplish grey gloss, which is more pronounced in the females, the males varying from dark to pale rufous brown; lines and markings obscure; median area often darker; hindwing in male white, with the terminal line dark, in female uniform brownish; — ab.

(30 b)., is a very distinct dull brown and iron-grey form, with the outer edge of the reniform whitish, slightly smaller than typical.

[1] The larvae feed on various plants including grasses, Ericaceae (Calluna), Rosaceae (Crataegus), Leguminosae (Cytisus).