Insecta : Lepidoptera : GeometridaeButterflies and Moths

Eulithis pyraliata (Denis & Schiff., 1775)

Barred Straw

Eulithis pyraliata

Description: Wingspan 33-38mm. A distinctive species particularly in the peculiar resting posture. The narrow forewings are held well away from the body and the abdomen is raised. The hindwings are hidden completely behind the forewings. Forewings are generally yellow with brown median cross lines. From the beginning of July to the late August.

World Distribution: Across Europe and Asia to eastern Siberia.

Irish Distribution: Common and widespread in southern counties with a scattered distribution further north.

Ecology: Found in a wide variety of habitats especially woodland, bogs, and coastal grassland, where it is often seen in good numbers at light. The larvae feed on bedstraws Galium spp. It overwinters as an egg.

Key Identification Features:

  • Narrow forewings
  • Abdomen is held raised at rest

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

iNaturalist: Eulithis pyraliata at iNaturalist World Species Observations database.

 Thompson, R. & Nelson, B. (2023). Eulithis pyraliata. (Denis & Schiff., 1775). [In] Moths of Northern Ireland.
https://habitas.org/moths/species.php?item=5838. Accessed on 2026-11-02.