Although this species definitely occurs in Bulgaria, we have no real idea how common it is, or it's distrbution. Genitalia examination (or DNA analysis) is needed to separate it with any degree of certainty from it's common sibling species the Wood White (Leptidea sinapis).

Looking at photographs and illustrations of the two species, some of the Leptidea specimens we have encountered seem more likely to be this species (more heavily dusted with dark scales), such as the examples illustrated above from photographs taken in the Osogovska Planina near the western border of Bulgaria.

The Eastern Wood White (L. duponcheli) can usually be spearated from both Wood White (L. sinapis) and Cryptic Wood White (L. juvernica) in the field. See Eastern Wood White for ID features that separate it from the other two species.