Debus emarginatus (Eichhoff)

Hulcr, Jiri, 2010, Taxonomic changes in palaeotropical Xyleborini (Coleoptera, Curculionidae, Scolytinae), ZooKeys 56, pp. 105-119 : 107

Debus emarginatus (Eichhoff)

Xyleborus emarginatus Eichhoff, 1878

Debus emarginatus (Eichhoff): Hulcr and Cognato in press

Xyleborus terminaliea Hopkins, 1915, syn. n.

Coptoborus terminaliae (Hopkins) Wood and Bright 1992, syn. n.

Xyleborus exesus Blandford, 1894, syn. n.

Xyleborus palmeri Hopkins, 1915, syn. n.

Coptoborus palmeri (Hopkins): Wood and Bright 1992, syn. n. (complete taxonomic history in Wood and Bright 1992)

Specimens examined.

Xyleborus terminaliae : Philippines, Pagbilao (holotype, USNM). Xyleborus exesus : Japan, (holotype, BMNH). Debus emarginatus : Indonesia, Sumatra, Bandar Baroe (homotype, compared to type by Eggers, NHMW); Indonesia, Java, Bandjar (homotype, compared to type by Eggers, NHMW, 2 indiv.); Philippines, Laguna, Pangil (homotype, NHMW); Malaysia, Sabah, Danum Valley (17 indiv., Hulcr det., MSUC); New Guinea (BBM, 20 indiv.); New Guinea, Ambunti (4, BBM); New Guinea (FICB); New Guinea, Gulf Province, Ivimka (UCD); Thailand, Pong Yaeng N. P. (Hulcr det., MSUC); PNG, Madang Prov. (79, Hulcr coll.).

Comments.

Holotypes of Xyleborus exesus Blandford, Xyleborus palmeri Hopkins, and Xyleborus terminaliae Hopkins share all diagnostic characters with homotype and large series of non-types of Debus emarginatus (Eichhoff). Xyleborus exesus : declivity with slightly less steep slope, less pronounced lateral tubercles (granules), dominant tubercle in middle of lateral sulcus slightly longer. Schedl (1973e) suggested synonymy of non-New Guinean Xyleborus emarginatus Schedl with Xyleborus exesus Blandford, based on shared shallow declivital emargination. Holotype of Xyleborus exesus damaged, missing elytron, fits range of Debus emarginatus variation. Xyleborus palmeri Hopkins is larger variant of typical Debus emarginatus .