One hundred eighteen taxonomic changes among Xyleborine ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) Author Smith, Sarah M. 0000-0002-5173-3736 Department of Entomology, Michigan State University, 288 Farm Lane, 243 Natural Science Bldg., East Lansing, MI 48824, USA. smith 462 @ msu. edu; https: // orcid. org / 0000 - 0002 - 5173 - 3736 smith462@msu.edu Author Beaver, Roger A. 161 / 2 Mu 5, Soi Wat Pranon, T. Donkaew, A. Maerim, Chiangmai 50180, Thailand. Author Sittichaya, Wisut 0000-0001-6200-1285 Agricultural Innovation and Management Division, Faculty of Natural Resources, Prince of Songkla University, Songkhla, 90110, Thailand. wanakorn 62 @ hotmail. com; https: // orcid. org / 0000 - 0001 - 6200 - 1285 & Department of Entomology, Michigan State University, 288 Farm Lane, 243 Natural Science Bldg., East Lansing, MI 48824, USA. cognato @ msu. edu; https: // orcid. org / 0000 - 0001 - 6436 - 2447 wanakorn62@hotmail.com text Zootaxa 2022 2022-10-05 5194 2 151 175 journal article 158408 10.11646/zootaxa.5194.2.1 ca4aa334-4646-495b-9116-1766a7376728 1175-5326 7147098 C6F3069F-6EC1-4FAC-8870-FC0B53BD45EF Stictodex halli ( Schedl, 1954 ) comb. nov. Xyleborus halli Schedl, 1954: 151 . Xyleborus cuspidus Schedl, 1975: 363 . syn. nov. Remarks. The holotype of X. halli (NHMUK) was compared to images of the X. cuspidus holotype (NHMW) and found to be conspecific. The species is transferred to Stictodex Hulcr & Cognato, 2013 because of the following characteristics: antennal club very broad, obliquely truncate (type 2), with segment 1 straight, elytral declivity with first and second interstriae divergent, broadest at elytral summit, declivity flat and gradually sloped, scutellum flat, flush with elytra; mycangial tufts absent; protibiae inflated on posterior face. Distribution. East Malaysia , Papua New Guinea .