Numerous taxonomic studies have focused on the dung beetle genusHelictopleurusd’Orbigny, 1915, endemic to Madagascar. However, this genus stilll needs a thorough revision. Semantic technologies, such as nanopublications, hold the potential to enhance taxonomy by transforming how data are published and analysed. This paper evaluates the effectiveness of nanopublications in establishing synonyms within the genusHelictopleurus.In this study, we identify four new synonyms withinHelictopleurus:H. rudicollis(Fairmaire, 1898) =H. hypocritaBalthasar, 1941syn. nov.;H. vadoniLebis, 1960 =H. perpunctatusBalthasar, 1963syn. nov.;H. halffteriBalthasar, 1964 =H. dorbignyiMontreuil, 2005syn. nov.;H. clouei(Harold, 1869) =H. gibbicollis(Fairmaire, 1895)syn. nov.Helictopleurusmay have a significantly larger number of synonyms than currently known, indicating potentially inaccurate estimates about its recent extinction.We also publish the newly-established synonyms as nanopublications, which are machine-readable data snippets accessible online. Additionally, we explore the utility of nanopublications in taxonomy and demonstrate their practical use with an example query for data extraction.