Andricus oblongus Monzen, 1953

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 : 46

Andricus oblongus Monzen, 1953 Species inquirenda

Andricus oblongus Monzen, 1953: 17 , ♀.

Distribution. Japan (Honshu) ( Monzen 1953: 17).

Remarks. According to Pénzes et al. (2018), Yukawa & Masuda (1996) said that ‘ Monzen’s (1953) description of Andricus oblongus is actually an Andricus symbioticus gall attacked by inquilines’. Therefore, they left this species as a synonym of A. symbioticus even though they found 11 pins with adults thought to be of A. oblongus in Monzen’s collection (Kyoto University) that actually belong to a Synergus species. According to Ide & Abe (2020), the tribal placement of A. oblongus in Cynipini or Synergini should be revised in future.

Biology. The gall is recorded as forming masses on the bark of Q. serrata (sect. Quercus ) ( Monzen 1953; Pénzes et al. 2018).