Northern brown argus  (Aricia artaxerxes)

Range

Found in Scandinavia, mountainous parts of central Europe and North Africa. A. a. artaxerxes is found in Scotland and possibly northern England, and A. a. salmacis is found in Co. Durham (3).

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Habitat

Inhabits sheltered areas of free draining unimproved grasslands with patches of bare ground, supporting the main caterpillar foodplant common rock-rose, Helianthemum nummularium (3). Preferably there should be light grazing on the site (3).