Neuroterus hakonensis Ashmead, 1904

IRENE LOBATO-VILA, ALBA SALA-NISHIKAWA, GEORGE MELIKA, GRAHAM N. STONE, CHANGTI TANG, MAN-MIAO YANG, ZHIQIANG FANG, YING ZHU, YIPING WANG, SUNGHOON JUNG, JAMES A. NICHOLLS & JULI PUJADE-VILLAR, 2022, A catalogue, revision, and regional perspective of Eastern Palaearctic and Oriental oak gall wasps and their inquilines (Hymenoptera: Cynipidae: Cynipini, Synergini, Ceroptresini), Zootaxa 5161 (1), pp. 1-71 : 28-29

Neuroterus hakonensis Ashmead, 1904

Neuroterus hakonensis Ashmead, 1904: 79 , ǒ.

Distribution. China (Shandong Province) ( Ju et al. 2022: in press), Japan (Honshu) ( Ashmead 1904: 79; Monzen 1929: 350, Monzen 1931: 193, Monzen 1954: 29; Shinji 1944: 119; Sakagami 1952: 72), and Korean Peninsula ( Pujade-Villar et al. 2020a: 1215).

Remarks. Monzen (1954) identified the host plant of N. hakonensis as Q. acutissima (sect. Cerris ) while Shinji (1944) identified the host plant as Q. serrata (sect. Quercus ). Based on very strong oak section conservatism in a single generation of almost all Cynipini ( Stone et al. 2009) , both are unlikely to be true, and we regard the host(s) of this species as in need of confirmation.

Biology. Only the asexual generation has been described, which induces detachable leaf galls on an undetermined Quercus (see Remarks above) ( Table 1; Monzen 1954).