Distribution and biological peculiarities in Armenia: The species is is found in steppe zone of Ukraine, Moldova and Russia; east to Transbaikalia, Mongolia, Korea; south to Balkan Peninsula, Turkey, Transcaucasia, Greater Caucasus, Iran, Northern Pakistan, Central Asia (including Chitral and Ladakh in Kashmir), Kazakhstan.The species is monotypic and inhabits semi-desert areas of Armenia, mostly occurring in the elevation range of 400 to 1500 m a.s.l. Although several Cruciferae are known as the host plants of the species in other parts of its world distribution (including Sisymbrium spp., Sinapis spp., Descurainia spp.sp., and some others), its host plant in Armenia is not yet proven. The species stably gives two generations per year, one of those is on wing from early March till late April, and second – from late May till end of June. However sometimes the butterflies were recorded even in early September, thus indicating possibility of third generation.
Population dynamics: The Lesser Bath White is a rare butterfly even within a typical habitat, and its recording is usually more occasion rather than planned act. That is why, at current the computation of its population trend in Armenia is hardly possible.
Conservation measures: The species is another candidate for Data Deficient category, although for European Red List it was assessed as Least Concern. In addition the species has not been evaluated for IUCN and National Red Lists, and is not included in Bern and CITES Conventions. Currently the species is somewhat safe as its distribution range is partly covered by Protected Areas, Emerald Sites, and Prime Butterfly Areas, however significant portion of its habitat is still in the public lands and requires knowledge on the species for further decisions.