Latin name - Colias croceus

Flight period – May to October

Wingspan – 5.2 to 6.2 cm, 2 to 2.5 inch.

Description - Greenish yellow with two silver-white spots. Always rests with wings closed. Upperwings are a deep orange-yellow with broad dark wing margins. The Clouded Yellow is a migratory butterfly, originating from North Africa and southern Europe, with numbers varying greatly from year to year and is famous for occasional mass immigrations.