A catalogue, revision, and regional perspective of Eastern Palaearctic and Oriental oak gall wasps and their inquilines (Hymenoptera: Cynipidae: Cynipini, Synergini, Ceroptresini) Author Al, Irene Lobato-Vila Et text Zootaxa 2022 2022-07-04 5161 1 1 71 http://dx.doi.org/10.11646/zootaxa.5161.1.1 journal article 10.11646/zootaxa.5161.1.1 1175-5326 6793652 20804225-E0CE-420A-B960-4831EE3A1E01 Andricus mesostegius Kovalev, 1965 Andricus mesostegius Kovalev, 1965: 36 , . Distribution. Russian Far East ( Kovalev 1965: 36 ). Biology. Only males of the sexual generation have been described. The gall is unknown, but it is probably an inconspicuous bud gall on Q. dentata (sect. Quercus ) (Table 1; Kovalev 1965 ; Melika 2012).