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Large Grizzled Skipper

Pyrgus alveus

  • Family: Skippers and Darts – Hesperiidae
  • Subfamily: Spread-winged Skippers – Pyrginae
  • Wing span: Small, 25–33 mm (0.98–1.29 in.). Females larger than males.
  • Wing upper side: Blackish brown, with white blotches. (Blotches slightly smaller than other Spread-winged Skippers.)
  • Wing underside: Olive–greyish green, with white blotches.
  • Habitat: Open stony habitats, with abundance of flowers.
  • Flying time: Early July–early August.
  • Overwintering form: Caterpillar.
  • Larval foodplant: Cinquefoils (Potentilla), rockrose (Helianthemum nummularium), wild strawberry (Fragaria vesca).
  • Endangerment: Near threatened.

The large grizzled skipper is rare and can be found in southern Finland, especially the south-west and south-east of the country. It resembles the grizzled skipper, and their habitats can overlap, although the grizzled skipper is usually a little earlier. The white patches on the large grizzled skipper’s wing margin are unclear, but on the grizzled skipper they have clear borders. The inside edge of the large white blotch in the middle of the underside of the hind wing is constant, but on the grizzled skipper it is not.

The large grizzled skipper flies close to the ground, and travels so quickly that it can be difficult to follow. Females lay their eggs individually on the leaves of the host plant. Caterpillars live among two leaves that have been woven together.

Other species from the same genus
Other species from the same subfamily

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