Leptidea reali

Leptidea reali, the Réal's wood white, is a butterfly of the family Pieridae.

Appearance, behaviour and distribution
Réal's wood white has been found in many western Europe countries but has not been found in Britain. In Ireland, where it was only positively identified in 2001, it is more common and far more widespread than the wood white (L. sinapis). Since it looks and behaves like its close relative further research is needed to discover its true distribution, indeed on the continent its current known distribution is suspiciously patchy. The only conclusive way to separate the two species is by close examination of the genitalia.

A 2011 study concludes that L. reali is one of three members of a cryptic species complex which comprises L. sinapis and a new species L. juvernica. This study was based on karyotype analysis and analysis of mitochondrial nuclear DNA markers. L. reali was found to occur only in Spain, Italy and southern France. L. juvernica ranges from Ireland and France in the west to Kazakhstan in the east. Measurements of genitalia for the three species allow separation of these two species from L. sinapis, L. juvernica and L. reali could not be separated based on genitalia measurements. L. juvernica is also named the cryptic wood white.

Field lepidopterists have reported behavioural differences between L. reali and L. sinapis with Réal's being described as a stronger flier and with a preference for more open habitats. It had also been noted that specimens from Ireland thought to L. sinapis had a noticeably stronger green tinge.

Life cycle and food plants
The life cycle, flight period and food plants appear at present to be similar to the wood white.