Insecta : Lepidoptera : GeometridaeButterflies and Moths

Eupithecia subfuscata (Haworth, 1809)

Grey Pug

Eupithecia subfuscata

Description: Wingspan 17-21 mm. Forewings pale grey occasionally with an ochreous tinge. Adults have an overall mottled appearance with a pale sub-marginal line and a small distinct discal spot. Hindwings similar in appearance with a small black discal spot. Beginning of May to late August. Skinner gives May and June and occasionally August as the normal flight period in Britain.

World Distribution: Widespread across most of northern and central Europe including Russia and north America.

Irish Distribution: Common and widespread across southern counties with small scattered populations further north.

Ecology: This is a widespread species that has been recorded from a variety of habitats including woodland, bogs and some mature suburban gardens, Adults are attracted to light in small numbers. The larvae feed from August to October on a wide variety of trees and flowers.

Key Identification Features:

  • Mottled appearance
  • Pale sub-marginal line and black discal spot
  • Small discal spot on hindwing

Distribution Map from NBN: Eupithecia subfuscata at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Eupithecia subfuscata at iNaturalist World Species Observations database.

 Thompson, R. & Nelson, B. (2023). Eupithecia subfuscata. (Haworth, 1809). [In] Moths of Northern Ireland.
https://habitas.org/moths/species.php?item=5925. Accessed on 2026-11-02.