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’s 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’s life cycle and life form.
A small butterfly with a green underside and dark brown upperside. The butterfly usually rests on bushes with its wings closed which enables it to be quite distinctive, although difficult to spot without movement. The underside can have a series of white spots on the hindwing. Male and female are similar. It has one brood a year. The green underside is quite distinctive and can’t be confused with any other species.
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.
Found in a variety of habitats, most frequently maquis or garrigue. Usually found as singletons, except where nectar rich flowers are grown (see observations).
Alder Buckthorn Frangula alnus - not on Corfu, Rhamnus alaternus, Buckthorn Rhamnus cathartica - not on Corfu, Rhamnus lycioides, Cornelian Cherry Cornus mas, Dogwood Cornus sanguinea, Arbutus andrachne, Strawberry Tree Arbutus unedo, Mediterranean Kidney Vetch Anthyllis vulneraria subsp. rubriflora, Chamaecytisus hirsutus, Broom Cytisus scoparius - not on Corfu, Cytisus villosus, Dorycnium Dorycnium hirsutum, Genista acanthoclada, Genista sylvestris, Rubus canescens, Rubus sanctus.
A highly territorial spring butterfly that shows a polyphagous (feeding on many different plants) approach to host plant utilisation. A very photogenic species, which as John Denne demonstrated can easily be attracted to gardens, in considerable abundances, by planting large numbers of the tall growing spikes of Echium candicans (Blue Spires).
*The information provided in the tables below is based on verified sightings of the Green Hairstreak submitted via this website since 1st January 2021.