Distribution and biological peculiarities in Armenia: The species is widely distributed in Europe, Asia Minor, Southern Russia, Southern Urals, Caucasus and Transcaucasia. Armenia is inhabited by subspecies C. a. caucasica (Jachontov, 1914), which occupies deciduous forests throughout the country at the elevation range between 800 and 2000 m a.s.l. Unlike the other forest species, the Pearly Heath occurs even in rather degraded forests, such as the one at Aragats Mountain. The larvae are using wide variety of Gramineae as host plants. The species gives one generation per year having butterflies on wing from early June till late July (depending on elevation).
Population dynamics: The species density varies from slightly uncommon to quite common within typical habitat. Although the Pearl Heath inhabits degraded forests, but its density there is much lower than in less disturbed areas. The latest feature allows use of the species as indicator of forest ecosystems, which can be used in forestry management. The population trend in 2003-2013 shows slight decrease although not at significant level (p>0.05), which can be justified by the fact that major forest degradation took place in 1990-2000, but logging is still goes through unsustainable practices.
Conservation measures: The species is not included in the Global and National Red Lists, as well as in CITES and Bern Conventions, while for European Red Book it was evaluated as Least Concern. The same status is suggested for Armenia, though with reservation that the further monitoring is required, as the Pearl Heath shows some sensitivity towards changes in forests' conditions. The current distribution range is partly covered by various Protected Areas and Emerald Sites, also the species is presented in Lichk, Gyumorats, and Kajaran Prime Butterfly Areas. It appears that the species can help in development of sustainable forest management schemes, as well as the latest ones can improve the species' populations.