The Checkered blue (Scolitantides orion) is a butterfly of the Lycaenidae family, with wingspan of about 13-16 mm.
It is widespread in Europe (more localized in the south), in Russia and in the east between the Paleartica ecozone and Japan.
It is the only representative of the genus Scolitantides Hübner, 1819 and is easily recognizable. To be a member of the subfamily of Polyommatinae,
presents the rather opaque high side, devoid of the usual bright blue typical of the males of this subfamily,
but with a very luminous and distinctive underside. The female is similar but usually brown-black with only a splash of blue flakes,
which in some cases are preponderant, leaving the barrier of sexual dimorphism very fragile.
The background color of the lower part of the male generally looks like a pure white, while the female seems to have a slight yellowish tinge.
Univoltina has a rather early flight season, in fact it has flickering from mid-May to around June.
In certain particularly favorable years, in certain geographical areas there may be a second generation in July.
The Scolitantides orion lives in rocky slopes, stone walls, bushes, rocky prairies, edges of woodlands and riverbanks,
secondly, also walls of vineyards, in any case, rocky areas where there is a feeding platform from 0 up to 1000 m.
The larva feeds on various species of Sedum.