This is a brown butterfly common in many parts of Southern and Central
Europe, though not found in England. It is a rare insect in Teneriffe,
and is only met with high up in the mountains, chiefly at Vilaflor, and
on the south part of the island, about July and August. It measures in
expanse from two to three inches, and is of a uniform brown colour,
having a few white markings, which vary much in different specimens,
on the fore-wings. Two large brown spots are seen at the outer margin
of each fore-wing, interspersed with small white spots. The hind-wings
are brown, shading to lighter colour at the base. The under-side is
prettily mottled, and streaked with grey-brown, the two dark spots seen
on the margin being well defined. The larva and chrysalis have not been
observed.