Allopachria nigrocatta sp. nov. from Guangxi, with a key and checklist of Chinese species and additional records of Allopachria Zimmermann, 1924 from China (Coleoptera, Dytiscidae, Hydroporinae, Hyphydrini)

A new species <i>Allopachrianigrocatta</i> <b>sp. nov.</b> from Guangxi, China is described. New records are provided for the following <i>Allopachria</i> species: <i>A.dudgeoni</i> Wewalka, 2000 and <i>A.weinbergeri</i> Wewalka, 2000 from Zhejiang, and <i>A.yiae</i> Bian, Guo & Ji, 2013 from Guizhou. Additional records are also given for some other Chinese species. The habitus and male genitalia of the new species are illustrated. An updated key and a checklist of all Chinese species of <i>Allopachria</i> are provided.