Colias croceus
Videos
Colias croceus, the clouded yellow, is a small butterfly of the family Pieridae, the yellows and whites.
Clouded yellow male underside 2
Clouded yellow female underside
Colias croceus f. helice
Male
Colias hyale
Videos
Colias hyale, the pale clouded yellow, is a butterfly of the family Pieridae, which is found in most of Europe and large parts of the Palearctic. It is a rare migrant to the British Isles and Scandina
Colias croceus
…paler colouration. These pale forms helice can be confused with Berger's clouded yellow (Colias alfacariensis) and the rarer pale clouded yellow (Colias hyale). Even the palest C. croceus tends to have more black on the upperside, however, in particular on the hindwings. Young caterpillars are yellow-green…
Colias hyale Novy Jicin Moravie Czech Republic male dorsal
Colias hyale Novy Jicin Moravie Czech Republic male ventral
Illustration from John Curtis's British Entomology Volume 5
Colias hyale ♀