For every species the status of the presence in Europe is indicated.
1 (Indigenuous):Native to Europe
2a (Alien: established):Introduced into Europe by man and maintained populations for at least 10 years in a row. Example: Acheta domesticus.
2b (Alien: incidentally introduced):Introduced into Europe by man and not forming lasting populations (< 10 year).
3a (Insufficiently known):Insufficiently known
3b (Record incorrect):Recorded wrongly for Europe, e.g. based on an identification error.