Leptidea juvernicaLeptidea juvernica, the Cryptic wood white, is a butterfly in the family Pieridae.TaxonomyA 2011 study using karyotype analysis and analysis of mitochondrial nuclear DNA markers concluded that the complex of cryptic species that includes Leptidea sinapis and Leptidea reali also included a third, new species Leptidea juvernica.DistributionL. juvernica ranges from Ireland and France in the west to Kazakhstan in the east. The population in Ireland was formerly thought to be Leptidea reali, but is now known to be L. juvernica.AppearanceIt has been noted that specimens of L. juvernica from Ireland, originally thought to be L. sinapis, had a noticeably stronger green tinge.