The status of the four Dioryctria species in Britain is uncertain as they are very difficult to tell apart.
D. simplicella tends to have less contrast on the forewing markings than the other three species and is usually smaller than D. abietella, which it is perhaps most often confused with.
Conifer plantations and heathland.
Recorded in 9 (3.3%) of the 270 2km squares of Huntingdonshire.
Last recorded in September 2022
Recorded date range (Adult): 05 July to 04 September