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 medium white butterfly, with black tips to the forewing upperside, and with pale yellow hindwing underside. The male and female are similar, the male has one black spot and the female two black spots on the forewing upperside. Both have two black spots on the forewing underside. The first brood markings can be faint. The black apical patch on the forewing upperside, which is more along the costa (leading edge) of the wing, than along the margin, enables separation from other members of the genius which it can be easily confused with.
Generalised wing venation diagram
A generalised diagram of butterfly wing venation, with anatomical labels - by Gillian Elsom.
Pieridae wing venation diagram
The wing venation of a male Brimstone butterfly Gonepteryx rhamni an example of a butterfly from the family Pieridae - by Gillian Elsom.
Ubiquitous - found everywhere.
Arabis Arabis collina (flowers white to purplish-pink), Arabis Arabis turrita (flowers pale yellow), Arabis Arabis verna (flowers white to pale violet),Mustard Brassica cretica, Black Mustard Brassica nigra, Turnip or Field Mustard Brassica rapa (cultivated & naturalised), Swine-cress Lepidium coronopus, Lesser Swinecress Lepidium didymum, Hoary Cress Lepidium draba, White Mustard Sinapis alba (yellow flowers), Hedge Mustard Sisymbrium officinale, Wild Mignonette Reseda lutea, Nasturtium Tropaeolum majus - introduced.
Whilst this highly migratory species clearly breeds on Corfu, population numbers must be massively inflated by migration events. Its use of Brassicas and Nasturtiums as host plants makes it widely considered a pest.
*The information provided in the tables below is based on verified sightings of the Small White submitted via this website since 1st January 2021.