- Subfamily: Pyrginae
- Wingspan: 24-28 mm
- Flight period: Jun - Aug
- Spread: Common
- Host plants: Potentilla reptans, Fragaria vesca...
The Pyrgus armoricanus also called Oberthür's Grizzled Skipper is a small/medium sized moth with a wingspan of 24-28 mm.
It is distributed throughout Europe with the exception of Ireland, the United Kingdom (from which no data is available) Norway, Finland, Belarus and some Baltic countries. In Italy it is present everywhere including the islands. *
The wings of the Pyrgus armoricanus are, in the male, of a dark brown color tending to black with well developed white spaces. There is a costal androconial fold. The hind wings are dark brown, also these tending to black with little evident designs.
In the female the wings are similar to the male but without a rib fold in the front. The reverse in both sexes is reddish brown, not uniform with white spaces and lighter veins. **
The Pyrgus armoricanus is a bivoltine species with flickers between the end of May and August. It overwinters at the egg stage. It is found in various environments of the plain up to about 1200 meters.
The host plants are Potentilla reptans, Fragaria vesca, Helianthemum nummularium
* Lepidoptera mundi https://lepidoptera.eu/ - European Fauna https://fauna-eu.org/
** Bestimmungshilfe für die in Europa nachgewiesenen Schmetterlingsarten - http://lepiforum.de/