The colour of this moth varies from tawny to reddish brown, with females being darker and smaller than the male.  A paler kidney mark on the forewing and two wavy cross lines help to characterise this species. May occasionally be found flying on sunny afternoons but flies mainly after dark.

Size and Family

  • Family – Brocades, Quakers and allies (Hadenines)
  • Small Sized 

Conservation status

  • UK BAP: Not listed
  • Vulnerable (Red Data Book category 2)

Particular Caterpillar Food Plants

Bilberry (Vaccinium myrtillus) and Heath Bedstraw (Galium saxatile).


    • Countries – England and Wales
    • Only found in the hills of north-west Monmouthshire and on the Herefordshire-Monmouthshire border. 


        High moorland areas with Bilberry.


      Silurian (male) - Ilia Ustyantsev

      Silurian (male)

      Silurian (female) by Roy Leverton

      Silurian (female)

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