Chapman’s blue

Polyommatus thersites gravesi

One of the small blue butterflies with a wingspan of 28-30 mm, resembles the common but males are a brighter violet-blue and the spots on the forewing undersides are absent; there are differences between broods. The Chapman’s lives in different types of habitats primarily in the north of the country, in farmland, sainfoin fields, thickets, dry meadows, scrubland, warm grassland, and on stony slopes. Host plants associated with this butterfly are the sainfoin (Onobrychis viciifolia) and cock’s-head sainfoin (O. caput-galli). It flies April through August in a number of broods.

Video

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