Diuncus haberkorni (Eggers)

Beaver, R. A. & Liu, L. Y., 2010, An annotated synopsis of Taiwanese bark and ambrosia beetles, with new synonymy, new combinations and new records (Coleoptera: Curculionidae: Scolytinae), Zootaxa 2602, pp. 1-47 : 26

93. Diuncus haberkorni (Eggers)

Xyleborus haberkorni Eggers, 1920: 43

Xyleborus taichuensis Schedl, 1952a: 64 . n. syn.

Distribution: From India through Southeast Asia to Indonesia and New Guinea, Japan (Ryukyu Is.), Taiwan, Tanzania, Thailand, Vietnam. Originally described from Tanzania ( Eggers 1920), but there are no later African records, and this is clearly an Oriental species which was probably transported by man to Africa. [4] Hosts: Polyphagous, recorded from more than 15 genera and families ( Wood & Bright 1992). No hosts have been recorded in Taiwan.

Biology: Hulcr and Cognato (2009) note that it sometimes makes its galleries next to other species of ambrosia beetle as a fungal parasite, but may also be unassociated with other species.

Taxonomy: We have examined a syntype (labelled as a paratype) of X. taichuensis (NMW) , and compared it with specimens of X. haberkorni identified by Browne and Schedl (NHML, NMW), and specimens from Malaysia, Taiwan and Thailand in RAB. There can be no doubt that X. taichuensis falls within the range of variation of X. haberkorni , and the former is therefore placed in synonymy with the latter.