Distribution and biological peculiarities in Armenia: The species is widely distributed in temperate belt of Eurasia. Armenia is inhabited by nominate subspecies, which is mainly found in deciduous forests and woodlands, occupying elevation range from 1000 to 2200 m a.s.l. The species mainly uses variousCentaurea spp as the host plant, although caterpillars have also been recorded on Cirsium arvense and Plantago spp. The species gives one generation per year, the earliest butterflies have been recorded at the beginning of June, the flight lasts until late July.
Population dynamics: The species is rather uncommon within typical habitat having stable population trend in 2003-2013 (p>0.05). The latest could be justified by an assumption that the species doesn't need shade, as for example Argynnis spp, and by the fact the host plants of the Knapweed Fritillary are not eatable for the livestock, which grazes in the forests and woodlands.
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. Preliminary evaluation of the species for Armenia suggests the same conservation status. At current the species' distribution is covered by number of Protected Areas and Emerald Sites, however significant part of its range is located inside forestry enterprises. Although there is no necessity for special conservation measures, however continuation of species' monitoring is essential for tracking its further population trend.