Diuncus haddeni (Schedl 1933b) comb. n.

Previous genus: Xyleborus

Diagnosis: A relatively large Diuncus . Very similar to many representatives of D. haberkorni, except the elytral spine in interstria 2 is minute, only the spine in interstria 3 is large. Both are pointed, not conical, and at the very summit of declivity.

Length: 2.0– 2.3 mm.

Discussion. Several characters differ between the holotype from Philippines and the specimens from New Guinea, such as the bulging elytral disc. Monophyly of this morphotype is uncertain. Described by Schedl (1933a) as allied to X. dossuarius, X. javanus and X. quadrispinosulus . The most similar are D. haberkorni and D. gorggae from New Guinea, which were not mentioned by Schedl.

Examined material: Philippines, Luzon, Mt. Makiling (holotype, NHMW); PNG, Gulf Prov., Ivimka (UCD); PNG, Madang Prov., Ohu (J. H. coll. 2006).