At least three independent records from different recorders/locations/dates.
Breeds and has its complete lifecycle throughout the year on Corfu. Population is self-sustaining.
Regular immigrant and/or emigrant from Corfu. May also breed but is usually not present all the year around.
Found outside its normal range, such as outside its known habitat. Not enough records to confirm as a Resident or a Migrant.
A species that is expanding its range, but is not self-sustaining, and is reliant on migrants to sustain its population. This is the stage before a species becomes a resident, or a species which is right on the edge of its known distribution.
Records that have not been substantiated and therefore the existence of such a species on Corfu is uncertain.
EU Red Data Status Definitions
Not Evaluated (NE)
A taxon is Not Evaluated when it has not yet been evaluated against the criteria
Data Deficient (DD)
A taxon is Data Deficient when there is inadequate information to make a direct, or indirect, assessment of its risk of extinction based on its distribution and/or population status. Data Deficient is therefore not a category of threat. Listing of taxa in this category indicates that more information is required and acknowledges the possibility that future research will show that threatened classification is appropriate.
Least Concern (LC)
A taxon is Least Concern when it has been evaluated against the criteria and does not qualify for Critically Endangered, Endangered, Vulnerable or Near Threatened. Widespread and abundant taxa are included in this category.
Near Threatened (NT)
A taxon is Near Threatened when it has been evaluated against the criteria but does not qualify for Critically Endangered, Endangered or Vulnerable now, but is close to qualifying for or is likely to qualify for a threatened category in the near future.
A taxon is Vulnerable when the best available evidence indicates that it meets any of the criteria A to E for Vulnerable (see Section V), and it is therefore considered to be facing a high risk of extinction in the wild.
A taxon is Endangered when the best available evidence indicates that it meets any of the criteria A to E for Endangered (see Section V), and it is therefore considered to be facing a very high risk of extinction in the wild.
Critically Endangered (CR)
A taxon is Critically Endangered when the best available evidence indicates that it meets any of the criteria A to E for Critically Endangered (see Section V), and it is therefore considered to be facing an extremely high risk of extinction in the wild.
Extinct in the Wild (EW)
A taxon is Extinct in the Wild when it is known only to survive in cultivation, in captivity or as a naturalized population (or populations) well outside the past range. A taxon is presumed Extinct in the Wild when exhaustive surveys in known and/or expected habitat, at appropriate times (diurnal, seasonal, annual), throughout its historic range have failed to record an individual. Surveys should be over a time frame appropriate to the taxon鈥檚 life cycle and life form.
A taxon is Extinct when there is no reasonable doubt that the last individual has died. A taxon is presumed Extinct when exhaustive surveys in known and/or expected habitat, at appropriate times (diurnal, seasonal, annual), throughout its historic range have failed to record an individual. Surveys should be over a time frame appropriate to the taxon鈥檚 life cycle and life form.
A small butterfly, the male upperside is blue with a black margin, whereas the female is dark brown with a blue suffusion. The underside of the wings are distinctive and 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 but of equal size, and only a small blue basal suffusion.聽
Generalised wing venation diagram
A generalised diagram of butterfly wing venation, with anatomical labels - by Gillian Elsom.
Lycaenidae wing venation diagram
The wing venation of a male Small Blue butterfly Cupido minimus an example of a butterfly from the family Lycaenidae - by Gillian Elsom.
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.