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Cetoniine species accommodated in tribe Taenioderini distributed in Sulawesi Island are studied and compared. Three new species and one subspecies flying across Sulawesi Island or its neighbouring islands are described. From Sulawesi Island, Ixorida (Aurelia) kaorui sp. nov. is described and compared with its congeners. From offshore islands of Muna and Buton, Ixorida (Oncosterna) pygmaea sp. nov. and Ixorida (Oncosterna) butona sp. nov. with its subspecies Ixorida (Oncosterna) butona munaensis ssp. nov. are described as new to science. Ixorida (Mecinonota) somarisii Schauer, 1939 stat. nov. is raised from the synonymy with Ixorida (Mecinonota) venerea J. Thomson, 1857 and it is here regarded as a good species from Selayar Island (S of Sulawesi). Rarely collected Taeniodera celebensis Krikken, 1982 currently known by single male only is photographed for the first time and a redescription of its male is given. Some new distributional records of Taenioderini are provided. [ABSTRACT FROM AUTHOR]