Wood Whites go A-Courting!

In 1988, it was discovered that the Wood White butterfly (Leptidea sinapis (Linnaeus, 1758)) was actually two species, largely overlapping in their habitats, but virtually identical and only distinguishable by microscopic observation of their genital! (3) These so-called cryptic species are widespread in their distribution and occur together throughout the European continent, from the Iberian Peninsula to the Urals…