Euchloe ausonia on Sinapis arvensis flowers. Both species are common and Sinapis arvensis is the first to bloom in vast areas early on, even in the winter. Euchloe ausonia adjusts its color to this tide of yellow.
The 4th photo -of Pontia edusa-, is to show the similarities and differences between the two species and comes from my 2018 spotting: https://www.projectnoah.org/spottings/89...
Lat: 37.95, Long: 23.91
Spotted on Feb 22, 2019
Submitted on Feb 23, 2019
and 6 other people favorited this spotting