Ceroptres kovalevi Belizin, 1973

Ceroptres kovalevi Belizin, 1973: 37, ♀.

Ceroptres masudai Abe, 1997: 253, ♀ & ♂ [syn. in Lobato-Vila & Pujade-Villar (2019: 33)].

Distribution. Russian Far East (Belizin 1973: 37; Melika 2012: 146; Pénzes et al. 2012: 56), Japan (Honshu) (Abe 1997: 253; Abe et al. 2007: 201), South Korea (Abe 1997: 253; Lobato-Vila et al. 2020d: 182), and China (Hebei, Henan, Liaoning, Shaanxi, Zhejiang Provinces, and Ningxia Hui Autonomous Region) (Wang et al. 2012: 384; Pujade-Villar et al. 2016b: 20; Lobato-Vila & Pujade-Villar 2019: 33; Lobato-Vila et al. 2021b: 4).

Remarks. Andricus hakonensis (Ashmead, 1904) was mentioned as a host gall of C. kovalevi for the first time in Pénzes et al. (2012), who stated that Wachi & Abe (2009) obtained C. masudai occasionally from these galls. However, this host gall association is neither mentioned in Wachi & Abe (2009) nor Wachi & Abe (2010), and other authors have never recorded C. kovalevi from galls of A. hakonensis . Therefore, we consider this association as doubtful and have not included it in Table 2.

Biology. Ceroptres kovalevi has been recorded from host galls in the genera Andricus, Plagiotrochus, Ussuraspis, as well as from other undetermined galls, on oaks ( Quercus) of the sections Quercus ( Q. aliena Blume, Q. dentata Thunb., Q. fabri Hance, Q. serrata Murray) and Cerris ( Q. acutissima Carruth.) (Table 2; Lobato-Vila et al. 2021b).