Debus emarginatus (Eichhoff) Eichhoff, 2010

Hulcr, Jiri, 2010, New genera of Palaeotropical Xyleborini (Coleoptera: Curculionidae: Scolytinae) based on congruence between morphological and molecular characters, Zootaxa 2717, pp. 1-33 : 14-15

Debus emarginatus (Eichhoff) , comb. n.

Xyleborus emarginatus Eichhoff, 1878

(complete taxonomic history in Wood and Bright, 1992)

Specimens examined. Philippines, Laguna, Pangil (homotype, NHMW), Indonesia, Sumatra, Bandar Baroe (homotype, NHMW); Indonesia, Java, Bandjar (2, homotype, NHMW,); Malaysia, Sabah, Danum Valley (17, Hulcr det. MSUC); New Guinea (20, Hulcr det. BBM); New Guinea, Ambunti (4, Hulcr det. BBM); New Guinea (1, Hulcr det. FICB); New Guinea, Gulf Province, Ivimka (1, R. A. Beaver det., UCD), Thailand, Pong Yaeng N. P. (1, Hulcr det. MSUC); New Guinea, Madang Prov. (79, Hulcr det., MSUC).

Comments. This species is usually larger and darker than most Debus spp., with a shallow declivital impression. There is no clear boundary in morphological variation between D. emarginatus and D. fallax . D. emarginatus was placed in the Debus clade in a molecular phylogeny with 100% posterior probability ( Cognato et al., 2011).

Kalshoven (1959) examined a large number of individuals from different localities identified by different authors as different species, and concluded that D. emarginatus varies in size (3.0-4.0 mm.) and in the development of the spines on the declivity. Browne (1961) mentioned the large geographical range and variability of the species. Distribution. India to New Guinea, from the sea level to over 2100m a.s.l., common throughout its range.