Pieris rapae (Linnaeus, 1758) Small White , Kleiner Kohlweibling, Pieride da la rave, Белянка репная, Ռապա սպիտակաթիթեռ
Distribution and biological peculiarities in Armenia: The species is widespread and populations are found across Europe, North Africa, Asia, South America, and Great Britain. It has also been accidentally introduced to North America, Australia and New Zealand. Armenia is inhabited by subspecies P. r. transcaucasica (Stauder, 1925), which occurs mostly in the dryer areas of Southern and South-eastern parts of the country, at the elevations from 400 to 2000 m a.s.l. The species uses wide variety of wild and cultivated Cruciferae as the host plants and gives up to four generations per year, having butterflies on wing from late April till late October and early November.
Population dynamics: The species is rather common within typical habitat, and shows stable population trend during 2003-2013 (p>0.05). Probably, the high level of its adaptability help the Small White to survive in the conditions of intensive grazing and habitat transformation.
Conservation measures: The species is not included in the Global and National Red Lists, as well as in CITES and Bern Conventions, but is assessed for the European Red Book as Least Concern, the same status that is suggested for Armenia. Its distribution range is covered by several protected areas, Emerald Sites, and Prime Butterfly Areas, and so the species doesn't require special conservation measures. However, its monitoring remains important as can indicate the habitat degradation.