The article \"The Role of Niche Breadth, Resource Ayailability and Range Position on the Life History of Butterflies\" (A. Komonen, A. Grapputo, et at, Dims, 2DD4:4154} describes a study of several species of butterflies found in Finland. The following table presents the mean wingspan [in mm] and the ight period, defined as the mean number of days of appearance in the winged state, for 23 species in the family Lycaenidae - ingspan Period