(Freyer, 1838)
Blue Argus
Description:
The Blue Argus is a species of flower-rich grasslands and rocky slopes with grassy vegetation. Sometimes, they are also seen on scrub or in woodland clearings. This butterfly it is often found where the soil is calcareous.
Various sorts of crane's-bills (Geranium spp.) are used as food plant, including G. asphodeloides, Bloody Crane's-bill (G. sanguineum), and Rock Crane's-bill (G. macrorrhizum).
The caterpillars feed on the leaves and are attended by ants.
Depending on the altitude, the Blue Argus has one to three generations a year.
Habitat:
Alpine grasslands
Dry calcareous grasslands
Mesophile grasslands
Screes
Similar species:
Polyommatus eros
Polyommatus eroides