Blue angle



Wall - Wall Brown

  • National Status: Rapid range contraction since 1980s. Occurs as far north as southern Scotland, main strongholds coastal. Population trend 10 years -25%; since 1976 -87%.
  • West Midlands Status: Most remaining populations in the north and west. Range contracting. Population trend 10 years – decreasing.
  • Hotspots: Bury Ditches, Caer Caradoc Hill, Wenlock Edge quarries, Titterstone Clee all in Shropshire. Bury Ditches, Lea Quarry.
  • Habitat: Warm, sunny spots with short grass and rough stony ground. Has a liking for warm microclimates. Colonial but will wander occasionally into gardens.
  • Flight Period: Double-brooded flying May/June and late July/September. Second generation more numerous. Third brood occasionally in southern Britain but very rare in the West Midlands.
  •  Wingspan 45–53 mm. Female larger than male.

Caterpillar Food Plant: The main foodplants are Bents (various) (Agrostis spp.), Cock’s-foot (Dactylis glomerata), False Brome (Brachypodium sylvaticum), Tor-grass (Brachypodium pinnatum), Wavy Hair-grass (Deschampsia flexuosa) and Yorkshire-fog (Holcus lanatus).

Wall Life Cycle

Click on the image


The Charts show the distribution in 2016 and 2017 (due to recording problems)
The Population Trend from Transect Records Considered stable but very few records
Phenology from Casual Records

Gallery by Dave Williams