This dataset contains the digitized treatments in Plazi based on the original journal article Tian, Feng, Xing, Jichun (2022): A new species of Unachionaspis MacGillivray, 1921 (Hemiptera: Coccomorpha Diaspididae) from China. Zootaxa 5124 (5): 520-532, DOI: 10.11646/zootaxa.5124.5.2AbstractA new armoured scale insect (Hemiptera: Coccomorpha: Diaspididae) species, Unachionaspis multiglandularis sp. n., is described and illustrated; it was found on Chimonobambusa spp. (Poaceae: Bambusoideae) in Guizhou Province, China. An updated description of Unachionaspis tenuis (Maskell 1897) is given, based on samples collected in Guizhou, China. Habitat photographs and illustrations for both species are provided. The type specimens of U. multiglandularis and Chinese study material of U. tenuis are deposited at the Institute of Entomology, Guizhou University, Guiyang, China. An identification key to separate the four species in Unachionaspis, based on the morphology of adult females, is provided.