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 Diuncus dossuarius (Eggers, 1923) Fig. 49E, F, K Xyleborus dossuarius Eggers, 1923: 187. Diuncus dossuarius (Eggers): Hulcr and Cognato 2009 : 30. Type material. Paratype (NHMUK). Diagnosis. 2.6 mm long (mean = 2.6 mm; n = 5); 2.0-2.17 x as long as wide. This species is distinguished by the elytral summit transversely impressed with a saddle-like depression; declivital base armed by two pairs of denticles, one pair on interstriae 2 and the other on interstriae 3; bicolored elytra and pronotum that are darker on the apical areas; interstrial setae recumbent, finer, almost hair-like, in two or three confused rows on interstriae 2-4; and striae setose, setae similar to those of interstriae. Similar species. Diuncus corpulentus , D. javanus . Distribution. Brunei, Philippines, Vietnam. Host plants. Recorded from Swietenia , Toona ( Meliaceae ), and Ficus ( Moraceae ) ( Schedl 1966a ; Nobuchi 1979 ).