Psylla peregrina Foerster 1848, p 74; Kuwayama 1908, p 166; Oshanin 1912, p 127; Aulmann 1913, p 22; Sasaki 1954, p 35; Miyatake 1964a, p 21; Konovalova 1988, p 532. Type locality: Germany (Aachen).
Cacopsylla peregrina: Ossiannilsson 1992, p 132; Lauterer 1999, p 133.
Distribution. The whole Palaearctic from Europe to Japan (Hokkaido, Honshu), Russian Far East; USA (introduced).
Host plants. Unknown in Japan. Crataegus spp. (Rosaceae) in Europe and USA (Ossiannilsson 1992; Wheeler and Stoops 2001).