Distribution and biological peculiarities in Armenia: The species is distributed in Northern Iran, Transcaucasia, Kurdistan, Turkestan, Chitral, and Northern Afghanistan. Armenia is inhabited by subspecies P. c. transcaucasicus (Rebel, 1901), which occurs predominantly in semi-deserts located along Araks river in Ararat Plain and South-eastern Armenia, thus occupying elevation range between 400 and 1000 m a.s.l. The Christoph's Blue usesAlhagi pseudalhagi as the host plant, and gives several generations per year flying from late April till late October.
Population dynamics: The species is usually uncommon to rare within typical habitat, occurring in lower numbers in transformed habitats, however its population trend demonstrates stability in 2003-2013 (p>0.05). Obviously the host plant of Christoph's Blue - the a thorny bush - is not eatable for the livestock (maybe sometimes for goats), but in some areas the semi-deserts are being transformed into orchards, and that could affect the species' population. There is a small scale trade on the species, which however cannot really affect its population.
Conservation measures: The species is not included in the Global and European Red Lists, as well as in CITES and Bern Conventions, however it is included in Red Book of Animals of Armenia as Endangered EN B1a+B2ab(iii). Reassessment of its conservation status suggests it as Vulnerable. The current distribution range of Christoph's Blue is partly covered by Khor Virap sanctuary, and by Emerald Site Arevik. Also the species is presented in Agarak, Meghri, Kaladash, and Shvanidzor Prime Butterfly Areas. Among proposed conservation measures it is important to: (1) secure careful assessment of new orchard projects; (2) development of mosaic structure for existing orchards, which can provide a habitat for the local invertebrates and in the same time to increase pollination of the fruit trees; (3) promotion of butterfly-watching in Prime Butterfly Areas, thus creating alternative income opportunities for local rural communities.