Dorsal, lateral and declivital view of Microperus sagmatus holotype, 1.75–1.95 mm (A, B, E), and M. undulatus, 2.0–2.1 mm (C, D, F).

 
 
  Part of: Smith SM, Beaver RA, Cognato AI (2020) A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630