A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China Author Smith, Sarah M. Department of Entomology, Michigan State University, 288 Farm Lane, East Lansing, Michigan 48824, USA https://orcid.org/0000-0002-5173-3736 camptocerus@gmail.com Author Beaver, Roger A. 161 / 2 Mu 5, Soi Wat Pranon, T. Donkaew, A. Maerim, Chiangmai 50180, Thailand Author Cognato, Anthony I. Department of Entomology, Michigan State University, 288 Farm Lane, East Lansing, Michigan 48824, USA text ZooKeys 2020 983 1 442 http://dx.doi.org/10.3897/zookeys.983.52630 journal article http://dx.doi.org/10.3897/zookeys.983.52630 1313-2970-983-1 7DED4CE2934C4539945F758930C927F9 C890C7FD4B2D57A8B1A062305ED42D53 Microperus quercicola (Eggers, 1926) Fig. 69E, F, K Xyleborus quercicola Eggers, 1926: 146. Microperus quercicola (Eggers): Smith et al. 2018b : 396. Xyleborus izuensis Murayama, 1952: 16. Synonymy: Smith et al. 2018b : 396. Type material. Holotype Xyleborus quercicola (NMNH). New records. China: Guizhou, Zunyi, 28.x.2015, Y. Li, ex Cinnamomum camphora (MSUC, 5). Hong Kong, Tai Po Kau, vi.2017, J. Skelton, ex Lauraceae (MSUC, 1). Jiangxi, Nanchang, 12.iii.2018, Y. Li (UFFE, 1). Sichuan, Chengdu, 570 m; 8.vi.1960, Huifen Yin, Cinnamomum 78 (NMNH, 1). Zhejiang, Fuyang, 11.iv.1984, Guangpu Shen, Cinnamomum sp. (NMNH, 2). Taiwan: Nantou, Huisun, 24.x.2017, Y-T Huang, J. Hulcr, ex Diospyros morrisiana (MSUC, 1); as previous except: Zhushan, 11.vii.2017, C.-S. Lin (MSUC, 1). Diagnosis. 1.8-2.0 mm long (mean = 1.96 mm; n = 5); 2.38-2.86 x as long as wide. This species is distinguished by the elytral disc flat; declivity short, steep; declivity granulate from base to apex, granules small, as abundant as strial punctures; granules dense, separated by the width of one granule; declivital surface shiny; posterolateral costa strongly carinate; interstriae densely setose, setae fine, hair-like as long as the width of an interstria; and strial punctures setose, setae recumbent, hair-like, less than a strial width. Similar species. Microperus kadoyamaensis , M. pometianus . Distribution. China* (Guizhou, Hong Kong*, Jiangxi, Sichuan, Zhejiang), Japan, Russia (Far East), South Korea, Taiwan*. Host plants. This species is polyphagous and has been recorded from Cinnamomum ( Lauraceae ) ( Murayama 1952 ), Diospyros ( Ebenaceae ), Fraxinus ( Oleaceae ), Carpinus ( Betulaceae ) ( Mandelshtam et al. 2018 ) and "oak trees" ( Fagaceae ) ( Eggers 1926 ).