Synergus chinensis Melika, Ács & Bechtold, 2004

Synergus chinensis Melika, Ács & Bechtold in Melika et al. (2004): 321, ♀ & ♂.

Distribution. China (Beijing, Liaoning, Shaanxi, Zhejiang Provinces) (Melika et al. 2004: 323, 325; Lobato-Vila et al. 2021a: 346), South Korea (Abe et al. 2007: 202; Lobato-Vila et al. 2020d: 186–187), and the Russian Far East (Kovalev 1965: 37).

Remarks. Kovalev (1965) found Synergus gallaepomiformis (Boyer de Fonscolombe, 1832) in the Russian Far East, which was reared from asexual galls of Andricus hakonensis . According to Abe et al. (2007) and Schwéger et al. (2015a) and based on the adult description given by Kovalev, these specimens belong to S. chinensis .

Biology. Reared from galls of Andricus hakonensis ǒ & ♂ ♀, A. songshui ♂ ♀, Plagiotrochus kunugiphagus ǒ, Trichagalma serratae ǒ, T. formosana ssp. romevai ǒ and some undetermined galls on different Quercus and Cerris section oaks (Table 2; Melika et al. 2004; Abe et al. 2007; Lobato-Vila et al. 2020d, 2021a).