Rosy-striped Knot-horn

This distinctive moth is found in three distinct areas in Somerset - the calcareous grasslands of the Mendips and Poldens, and the extreme south of the county around Chard, where the underlying bedrock is chalk.&nbsp; It can sometimes be found by day but is usually recorded at light.

Brown Powdered Knot-horn

Only separated from <i>D. dilutella</i> in 2015.&nbsp; Like that species, it is associated with thyme.&nbsp; Only one record, from Brean Down in 2021.&nbsp; Almost certainly this does not tell the whole story, as it is likely some of the historic records of <i>D. dilutella</i> refer to this species, and undoubtedly it is under-recorded because a valid record requires dissection.

Scarce Aspen Knot-horn

One record from Shapwick Heath in 1995.&nbsp; The larval host plant is aspen, which is not a common species in Somerset.

Sciota hostilis

Aspen Knot-horn