Aporia crataegi (Linnaeus, 1758) Black-veined White, Baum-Weibling, Gaze ou Pieride de l'aubepine, Боярышница обыкновенная, Ալոճաթիթեռ
Distribution and biological peculiarities in Armenia: The species occurs throughout most of Europe, North America, temperate Asia and Japan. In Armenia the nominate subspecies occupies woodlands and the steppe areas, where the Crataeguscurvisepala, Prunus domestica, or Pyrus communis - the host plants of the species can be found. Therefore it occurs at the elevation range from 1000 to 2200 m a.s.l. The species gives one generation per year, with the butterflies on wing from late May to late July.
Population dynamics: The species is usually common within typical habitat, and shows stable population trend in 2003-2013 (p>0.05), which can be justified by lack of disturbance for its host-plants - the fruit trees, which are used by local communities for collecting of wild harvest.
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, and the same status is suggested for Armenia after the preliminary assessment. The Black-veined White is distributed throughout number of Protected Areas, Emerald Sites, and Prime Butterfly Areas, and at current there is no need for development of special conservation measures. Moreover the species can be a good example of win-win situation, when it uses the leaves of the host-plants, and the fruits are used by local rural communities. Also it is important to continue the species' monitoring, as it can demonstrate the situation with wild fruit trees.