The Xixuthrus species of Fiji (Coleoptera: Cerambycidae:) Prioninae

Abstract

There have been four species of the cerambycid genus Xixuthrus described from the Fijian archipelago; X. heros (Heer), X. terribilis Thomson, X. ganglbaueri Lameere, and X. heyrovskyi Tippmann. Over time, X. terribilis had been reduced to synonymy, and it had been suggested that X. ganglbaueri was probably from New Guinea rather than Fiji. We here re-establish the validity of X. terribilis, place X. heyrovskyi in synonymy with it, and designate a neotype for X. ganglbaueri to resolve both the species identity and its geographic provenance. Diagnoses of the three confirmed Fijian species are presented, including digital images of type specimens, and notes on temporal and spatial distribution.