SeasonalityAdults fly from mid-July to mid-October.
IdentificationAdult antennae are reddish brown with the scapes banded black and yellow, vertically. Vertex of the head is dark brown except for the warts. Spurs are light brown. Forewings are pale yellow to light brown. In males, segment 10 is hidden by the cercus. The clasper has a short, acuminate, dorsal lobe directed dorsad. Lateral arms of the aedeagus are asymmetrical (Nimmo, 1971).