Davey, P., 2009: A species confined mainly to south-east England where it is local, the larva feeding on the lower stems and roots of various grasses. In Dorset, the moth occurs in two biotypes. On unimproved chalky grassland it is local and rarely common; for example there is a strong colony at Durlston but there have been no recent records from Portland. Singletons encountered in the Poole Basin suggest colonisation of acid grassland, but in these situations it is rare. Dispersed singletons occasionally turn up elsewhere.

The moth is similar to Light Arches2322. Diagnostics include: a tawny ground colour, not straw-coloured; an almost continuous sub-terminal line bounded by short black streaks, not dots; a squarer moth more akin to a Clouded-bordered Brindle2326, less like a Pale Pinion2236; tawny-coloured thorax.

Recorded in 28 (70%) of 40 10k Squares.
First Recorded in 1892.
Last Recorded in 2019.
(Data up to end 2019)