| Iolas blue | |
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| Female from Adalbert Seitz | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Lepidoptera |
| Family: | Lycaenidae |
| Genus: | Iolana |
| Species: | I. iolas
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| Binomial name | |
| Iolana iolas Ochsenheimer, 1816
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| Distribution | |
Iolana iolas, the iolas blue, is a butterfly of the family Lycaenidae. It is found in northern Africa, southern Spain, southern France, southern Europe, Asia Minor and Iran. The wingspan of the male is 18–21 mm. The flight period is May to June in rocky places at around 2,000 m. The larva feeds on Colutea arborescens.