Cacopsylla kwonorum Cho & Burckhardt, nom. nov.

Psylla (Hepatopsylla) silvestris Kwon, 1983: 58, nec Psylla silvestris Bajeva, 1969: 70; junior primary homonym.

Cacopsylla silvestris; Park (1996: 272).

Cacopsylla (Hepatopsylla) silvestris; Kwon & Kwon (2020: 181).

Distribution in Korea. GB, JB (Kwon 1983, as Psylla (Hepatopsylla) silvestris; Anonymous 1994, as P. silvestris; Park 1996, as C. silvestris; Paek et al. 2010, as C. silvestris; Lee et al. 2014, as C. silvestris; Kwon et al. 2016, as C. silvestris; Kwon & Kwon 2020, as C. (Hepatopsylla) silvestris) (NHMB).

Host plant. Unknown.

Comments. Psylla (Hepatopsylla) silvestris Kwon, 1983 is a junior primary homonym of Psylla silvestris Bajeva, 1969 (ICZN 1999/2012: Art. 57.4) and, hence, Psylla (Hepatopsylla) silvestris Kwon, 1983, the junior homonym, is permanently invalid (ICZN 1999/2012: Art. 57.2). Here we propose Cacopsylla kwonorum Cho & Burckhardt, nom. nov. as a replacement name for Psylla (Hepatopsylla) silvestris Kwon, 1983 . The new name is dedicated to Yong Jung and Jin Hyung Kwon in recognition of their fundamental work on the Korean Psylloidea . Based on the study of type material (ZIN) and the description by Bajeva (1969), Psylla silvestris Bajeva, 1969 belongs to Cacopsylla Ossiannilsson, 1970 and, therefore, we propose the following new combination: Cacopsylla silvestris (Bajeva, 1969), comb. nov.