Heath Rivulet

  • Heath Rivulet
    Heath Rivulet

Scientific name: Perizoma minorata

July to August. Scotland, rare in northern England and Ireland. A small grey moth often found near Eyebright inhabiting limestone grassland, moorland and upland pasture.

Superficially similar to the Barred Carpet, although the Heath Rivulet is generally smaller and grey, with coarse whitish markings. Flies in the afternoon and can be very active in hot sunshine, particularly amongst its foodplant, Eyebright. Also flies from dusk and into the night.

Size and Family

  • Family – Carpets and Allies (Larentiines)
  • Small Sized 
  • Wingspan range - 16-20mm

Conservation status

  • UK BAP: Not listed
  • Scarce (Nationally Notable B)

Caterpillar Food Plants

Flowers and seed capsules of Eyebright (Euphrasia spp.).


Found on moorland, upland pasture and limestone hills.


  • Countries – England, Scotland, Ireland
  • A northern species, found widely, but patchily, over Scotland north to Caithness and Orkney. It has a very restricted distribution in England, occurring in Cumbria and on the Pennines, with a few records elsewhere in northern England. There is also a single record from Carmarthenshire. In Ireland the species is known from the Burren and the Mourne Mountains.

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