A new genus of ambrosia beetle from Melanesia (Coleoptera: Curculionidae Scolytinae: Xyleborini) Author Beaver, R. A. 0000-0003-1932-3208 161 / 2 Mu 5, Soi Wat Pranon, T. Donkaew, A. Maerim, Chiangmai 50180, Thailand. rogerbeaver 6 @ gmail. com; https: // orcid. org / 0000 - 0003 - 1932 - 3208 rogerbeaver6@gmail.com Author Petrov, A. V. 0000-0001-9448-7179 Institute of Forest Science RAS, Sovetskaya st. 21, Uspenskoe, Moscow Region 143030, Russia. hylesinus @ list. ru; https: // orcid. org / 0000 - 0001 - 9448 - 7179 hylesinus@list.ru Author Sittichaya, W. Agricultural Innovation and Management Division, Faculty of Natural Resources, Prince of Songkla University, Hat Yai, Songkhla, text Zootaxa 2021 2021-03-24 4949 1 163 172 journal article 7495 10.11646/zootaxa.4949.1.9 fc6b80f2-eed9-4f48-bdab-6f56ef007bf0 1175-5326 4636084 4A8E4749-DCAB-4A6B-A5D0-0812DE0EDF6E Melanesicus deformatus (Browne) comb. n. ( Figs 9‒10 ) Xyleborus deformatus Browne 1974: 70 . Taxonomy. The senior author has examined the holotype and paratypes ( NHML ) and specimens in RAB . The species is easily distinguished by the strong, saddle-shaped impression of the elytral disc just before the declivity . Distribution . The species is endemic to Fiji , where it occurs only in the higher altitude rain forest ( Roberts 1977 ). FIGURES 9‒10. Melanesicus deformatus (Browne) female. 9. Dorsal view; 10. Lateral view. Biology. Roberts (1977) described the biology of the species, including the gallery system, development, brood sizes, and notes associated species of Scolytinae and Platypodinae, as well as nest parasites ( Cyphagogus fijianus Kleine ) ( Coleoptera : Brentidae ). He recorded the species most frequently from Dysoxylum spp. ( Meliaceae ), but also from single host trees in three other families ( Roberts 1977 ). RAB collected the species only from Dysoxylum sp., and it appears to have a strong host preference for this genus. In contrast to M. partitus (see below), the adults emerge around dusk, and are strongly attracted to light ( Roberts 1977 ).