Webbia dissimilis ( Eggers, 1923 ) Sittichaya & Smith & Beaver, 2023

Sittichaya, Wisut, Smith, Sarah M. & Beaver, Roger A., 2023, New species, taxonomic changes and newly recorded species of Webbia Hopkins, ambrosia beetles from Thailand and neighbouring countries (Coleoptera: Curculionidae: Scolytinae: Xyleborini), Zootaxa 5264 (1), pp. 47-63 : 56

Webbia dissimilis ( Eggers, 1923) comb. nov.

Xyleboricus dissimilis Eggers, 1923: 214 .

Arixyleborus dissimilis (Eggers) : Schedl 1958: 145.

Webbia costulatulus Schedl, 1953: 299 . syn. nov.

Remarks. The holotype of Xyleboricus dissimilis (MSNG) has been examined by SMS, and images of it by all authors. The images have been compared with two specimens of Webbia costulatulus Schedl that had earlier been compared directly to paralectotypes of the species (NHML) by RAB. It is evident that X. dissimilis , known only from the holotype collected in the Mentawei Is. ( Indonesia) belongs in the genus Webbia , and that the species was subsequently redescribed from West Malaysia by Schedl (1953) under the name, W. costulatulus , which is here placed in synonymy.

Distribution. East and West Malaysia, Indonesia (Sumatra).

Host plants. All host records ( Schedl 1953; Browne 1958, 1962) are from trees of the family Sapotaceae , an unusual host association in the Xyleborini .