Xyleborus semirudis Blandford, 1896a: 210 Euwallacea semirudis (Blandford) Wood, 1989: 173 A Synopsis of the Scolytine Ambrosia Beetles of Thailand (Coleoptera: Curculionidae: Scolytinae) Beaver, R. A. Sittichaya, W. Liu, L-Y. Zootaxa 2014 2014-10-21 3875 1 1 82 3DFCR (Blandford) Blandford 1896 [195,616,404,430] Insecta Curculionidae Euwallacea Animalia Coleoptera 49 50 Arthropoda species semirudis      Xyleborus semirudis Blandford, 1896a: 210.    Euwallacea semirudis(Blandford):  Wood, 1989: 173. Thai distribution: S:Nakhon Sri Thammarat. New to Thailand.    Newrecords:  Nakhon Sri Thammarat, Chang Klang Distr., 08° 20' 59.7'' N, 99° 40' 14.6'' E,  70 m, durian plantation, EtOH trap,  01.xii.2009( W. Sittichaya) (1);  Khao Luang NP, headquarters, 08° 22' 21.6'' N, 99° 44' 14.7'' E,  196 m, EtOH trap,  1.iv.2010( W. Sittichaya) (1). Other distribution: ‘Borneo’, Indonesia( Java, Sumatera), Malaysia(E. & W.). The species also occurs in Brunei Darussalam(R. A. Beaver, unpublished records). (3) Taxonomy: Wood (1989)synonymised this species with the Afrotropical species,  Euwallacea xanthopus(Eichhoff). In view of the discovery of sibling species in the closely related species,  Euwallacea fornicatus(see above), and the presence of small morphological differences, it seems advisable to keep the species separate at present.  E.semirudisdiffers from  E.xanthopusin the following characters (  E.semirudischaracters given first): mean length 2.95 mm, range 2.80–3.15 mm vsmean 2.65 mm, range 2.40–2.90 mm; elytral declivity somewhat flattened and matt vsevenly convex and shining; declivital striae 1 and 2 weakly impressed vsdeclivital striae 1 and 2 not impressed; declivital interstriae 1–3 usually lacking hairs except at the top of the declivity, and with granules irregularly spaced vsdeclivital interstriae each with a regularly spaced row of granules bearing hairs extending to apex. Biology: Polyphagous ( Browne 1961a). The gallery system resembles that of  E.interjectus(see above) in larger stems. In smaller stems, the initial gallery is circumferential, and the brood develop in one or two longitudinal branches ( Browne 1961a). Illustrations: D ( Nunberg 1959as  Xyleborus sereinuusEggers). 3326775656 2009-12-01 2010-04-01 2009-12-01 NP W. Sittichaya Khao Luang 70 8.372666 New 1 99.73741 Chang Klang Distr. 49 50 1 3326775390 2009-12-01 2010-04-01 2009-12-01 NP W. Sittichaya Khao Luang 70 8.372666 New 1 99.73741 Chang Klang Distr. 49 50 1