Ten newly recorded species of xyleborine ambrosia beetles (Coleoptera, Curculionidae, Scolytinae, Xyleborini) from Thailand

Abstract

Ten species of ambrosia beetles of the tribe Xyleborini,Amasabeesoni(Eggers, 1930),Amasaopalescens(Schedl, 1937),Amasacylindrotomica(Schedl, 1939),ArixyleborushirsutulusSchedl, 1969,Beaveriumlatus(Eggers, 1923),Cnestusprotensus(Eggers, 1930),Coptodryasquadricostata(Schedl, 1942),CryptoxyleborusconfususBrowne, 1950,Cryptoxyleboruspercuneolus(Schedl, 1951) andCyclorhipidionvigilans(Schedl, 1939), are recorded here for the first time in Thailand. Diagnostic characters, illustrations, distribution and biological data are provided for each species.Xylosandrusramulorum(Schedl, 1957),stat. res.is removed from synonymy withAmasacylindrotomicaand reinstated as a valid species.

A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China

“…We discovered a total of 75 new species reported in this and associated publications (Smith et al 2018c;Cognato et al 2019Cognato et al , 2020aPark et al 2020) and additional new records for southern Thailand (Sittichaya et al 2019). Given the wide range of some species distributions, examination of the broader region was necessary and as a result we identified new species and nomenclatural changes for Japan and Korea (Smith et al 2018b;Park et al 2020), and clarified species limits for some Indo-Malayan species that were incorrectly placed in synonymy (Smith et al 2020).…”

“…This catalog and its supplements contain additional references on the biology of many of the included species. Distribution data were collected from: Wood and Bright 1992;Beaver and Liu 2010;Knížek 2011;Beaver et al 2014;Zheng et al 2017;Mandelshtam et al 2018;Smith et al 2018b, c;Lin et al 2019;Sittichaya et al 2019;Park et al 2020;Li et al 2020;Rabaglia et al 2020b) and other sources are given for each species. New distribution records are denoted with an asterisk.…”

“…Philippines, Thailand. Imported to Japan from 'Borneo' and Indonesia (Maluku) (Sittichaya et al 2019).…”

“…Diagnosis. 6.0 mm long (n = 1); 2.2× as long as wide (Sittichaya et al 2019). This species is distinguished by the large size; declivity densely covered with long golden setae; elytral disc flat with a weak transverse impression; declivital posterolateral margins carinate; boundary between elytral disc and declivity distinct.…”

“…Diagnosis. 2.1-2.4 mm long (mean = 2.25 mm; n = 2); 2.0× as long as wide (Sittichaya et al 2019). This species is distinguished by its minute size, stout form with the pronotum approximately as long as the elytra; declivital surface shagreened, dull, glabrous; and antennal club type 5.…”