Distribution and biological peculiarities in Armenia: The species is distributed in Europe, North Africa, and Asia as far to the east as Mongolia. Armenia is inhabited by subspecies G. r. meridionalis Röber, 1907, which predominantly occupies forests and woodlands, although sometimes occurs at the mountain meadows, alternated with some groups of trees and bushes, including Rhamnus cathartica - the host plant of the Common Brimstone. Thus the elevation range taken by the species is from 1000 to 2400 m a.s.l. The species gives one generation per annum, the imago hatch out in late June - early July and at lower elevations are flying until end of September, when hibernate and begin their flight again in late April.
Population dynamics: The species is slightly uncommon to within typical habitat, and shows stable population trend during 2003-2013 (p>0.05); probably because the host plant of the species is not suffering from human induced threats.
Conservation measures: The species is not included in the Global and National Red Lists, as well as in CITES and Bern Conventions, however is assessed for European Red Book as Least Concern. It appears that the Brimstone deserves the same status for Armenia. At current the species is protected in number of Protected Areas and National Parks, and also is presented in Prime Butterfly Areas Gyumorats, Gudemnis, Lichk, Kajaran, and Gnisheek. At current, there is no need for special conservation measures, however it is important to continue the species' monitoring as a part of species diversity.