A small butterfly, the male upperside is blue with a black margin, whereas the female if dark brown with a blue suffusion. The underside of the wings are distinctive with are a light greyish brown. The forewing has a row of prominent black spots with a white border; the hindwing has a prominent turquoise basal suffusion, which is more greenish in the female. The hindwing black spots are noticeably smaller than those on the forewing. The butterfly could potentially be confused with Cyaniris semiargus, which has black spots are of equal size, and only a small blue basal suffusion.
Wet meadows and areas with lush vegetation.
Wild Liquorice Astragalus glycyphyllos, Calicotome villosa, Bladder-senna Colutea arborescens, Broom Cytisus scoparius - not on Corfu, Cytisus villosus, Goat's-rue Galega officinalis, Black Medick Medicago lupulina, Hairy Medick Medicago polymorpha, Lucerne Medicago sativa, Onobrychis aequidentata, Onobrychis caput-galli, Crown Vetch Securigera varia - not on Corfu, Spanish Broom Spartium junceum, Vicia cordata, Tufted Vetch Vicia cracca, Spring Vetch Vicia lathyroides
A relatively common butterfly in the spring.
*The information provided in the tables below is based on verified sightings of the Green underside Blue submitted via this website since 1st January 2021.
|Year||Number of observations|
The chart below shows flight data by month for 2023 submitted online since 1st January 2023 to 8th June 2023.
The chart below shows flight data by month based on all data submitted online since 1st January 2019 to 8th June 2023.
For a list of references, please see our bibliography page.