In Belarus, the genus Chrysoperla Steinmann, 1964 has until recently been represented by one species, Ch. саrnеа (Stephens, 1836). However, at present this taxon is considered as a complex of cryptic species, of which Ch. lucasina (Lacroix, 1912) and Ch. pallida Henry, Brooks, Duelli et Johnson, 2002 are recorded for the fauna of Belarus for the first time. A key to Chrysoperla species of the Belarusian fauna is given. Diagnostic characters of imagoes are described and illustrated in detail. Brief information about species distribution, as well as biological and ecological features are provided. Problems of species identification of the common green lacewing complex Ch. carnea s. l. are discussed. New data on distribution of Ch. саrnеа s. str. are given.