sentences:  The following include only records in which "A. distinctus" has explicitly been distinguished from "A. hortensis".Unfortunately with most relevant studies it is unclear to what extent the authors were dealing with populations of the sibling species "A. hortensis" or with mixed populations.However, a more recent study of a pure "A. distinctus" population in southern England reports results comparable with most others (but not with Hunter 1968, so that study might have concerned "A. hortensis").