Ceroptres kovalevi Belizin, 1973

Ceroptres kovalevi Belizin, 1973 . Revue d’Entomologie d’URSS 52(1): 37. Type material: ZIN.

Ceroptres masudai Abe, 1997 . Appl. Entomol. Zool. 32 (1): 253. Type material: KPU. Synonymized by Lobato-Vila and Pujade-Villar (2019: 33).

Material examined (43 and 128): Deposited in ZAFU with the following data: Quqianjia Forestry Farm, Liupan Mountain (Ningxia Hui Autonomous Region), Ex undetermined small spherical galls on leaves, unknown tree, 07.vii.2008, Zhemin Rao leg. (13 and 68); Qianqingtang, Qingliangfeng (Zhejiang), Ex unknown gall, unknown tree, 16.v.2012, Rui Guo leg. (18); same data, but Q. aliena, 03.iv.2016 (18); Shizifeng, Ludai (Henan), Ex unknown gall, unknown tree, 24.viii.1996, Ping Cai leg. (18); Dongling, Shenyang (Liaoning), Ex unknown gall, unknown tree, 07.vi.1994, Juxian Lou leg. (18); South Meiling Road, Xihu (Zhejiang), Ex unknown gall, unknown tree, 29.iv.2011, Xiaogui Zhou leg. (18); West Tianmu Mountain (Zhejiang), Ex undetermined small spherical galls on leaves, Q. fabri, (28.v.2011) 10.vi.2011, Rui Guo leg. (18); Changhua Town (Zhejiang), Ex unknown gall, Q. serrata, 25.vii.2014, Rui Guo leg. (13); Firebreak of West Tianmu Mountain (Zhejiang), Ex unknown gall, unknown tree, (22.viii.2014) 2 5.v iii. 2 0 1 4, J ie S h en leg. (1 3); B an q iao g o u, Huoditang Forestry Farm (Shanxi), Ex unknown gall, unknown tree, 05.vi.1998, Zizhou Du leg. (13).

Diagnosis: See Lobato-Vila and Pujade-Villar (2019).

Distribution: Far Eastern Russia, Japan, South Korea and mainland China (Henan, Liaoning, Shaanxi and Zhejiang Provinces, and Ningxia Hui Autonomous Region) (Belizin 1973; Abe 1997; Abe et al. 2007; Wang et al. 2012; Lobato-Vila and Pujade-Villar 2019; Lobato-Vila et al. 2020d; this study).

Biology: Originally reared from an unknown gall (Belizin 1973). According to Pénzes et al. (2012), reared from galls of Andricus kashiwaphilus Abe, A. mukaigawae (Mukaigawa) and Ussuraspis nervosa Kovalev collected in Japan and Far Eastern Russia (Abe 1997; Melika 2012); from galls of Andricus targionii Kieffer and A. pseudoflos (Monzen) in Japan (Abe 1997; Abe et al. 2007); from leaf galls of an undescribed Ussuraspis species in Far Eastern Russia (Melika 2012) and, occasionally, from galls of Andricus hakonensis (Ashmead) (= A. attractus Kovalev, = A. symbioticus Kovalev) (Wachi and Abe 2010). The galls from which C. kovalevi has traditionally been reared have been collected on Q. dentata Thunb. and Q. serrata Murray (Abe 1997; Abe et al. 2007; Wang et al. 2012). Reared also from asexual galls of Plagiotrochus kunugiphagus (Ide and Abe) (new combination after Pujade-Villar et al. 2020a) on Q. acutissima Carruth in South Korea (Lobato-Vila et al. 2020d). The new material presented here was reared from unknown small spherical galls on leaves on Q. fabri Hance, from unknown galls on Q. serrata and Q. aliena Blume, and from other unknown galls on undeterminate Quercus .

a Quercus sections were assigned following http://oaks.of.the.world.free.fr/liste.htm [Last entry: September 2020] and the new classification of oaks proposed by Denk et al. (2017). b Only one species, Lithosaphonecrus papuanus (Nieves-Aldrey and Butterill), was excluded from the table, as it was described from Papua New Guinea (Australasian region). c According to the notes about S. connatus provided by Schwéger et al. (2015b).

Remarks: Ceroptres kovalevi is the only species currently known from the Eastern Palaearctic since Pujade-Villar et al. (2019) transferred C. distinctus Wang, Liu and Chen, 2012 and C. setosus Wang, Liu and Chen, 2012, both species described from mainland China (Wang et al. 2012), to the newly described genus Xestophanopsis Pujade-Villar and Wang (Diastrophini) and Periclistus Förster, respectively. Ceroptres kovalevi has not yet been found in the Oriental region.