Ancyronyx lianlabangorumsp. nov. (Coleoptera, Elmidae), a new spider riffle beetle from the Kelabit Highlands (Sarawak, northern Borneo), is described. Illustrations of the habitus and diagnostic characters of the new species and the similar, polymorphic A. pulcherrimus Kodada et al. are presented. Differences to closely related species, based on COI nucleotide sequences and morphological characters, are discussed. Ancyronyx pulcherrimus is here recorded from Sarawak for the first time, based on DNA barcoding.

中文翻译：

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Ancyronyx lianlabangorum sp。十一月，来自砂拉越的新蜘蛛浅滩甲虫，以及基于DNA条形码（鞘翅目，El虫科）的A. pulcherrimus Kodada，Jäch＆Čiampor的新分布记录

Ancyronyx lianlabangorumsp。十一月 （Coleoptera，Elmidae），一种来自Kelabit高地（婆罗洲北部沙捞越）的新蜘蛛浅滩甲虫。新物种和类似的多态A. pulcherrimus Kodada等人的习性和诊断特征的插图。被提出。讨论了基于COI核苷酸序列和形态特征与紧密相关物种的差异。根据DNA条码，这是砂拉越首次记录到Ancyronyx pulcherrimus。