A new genus of malachiine Melyridae, Platyintybiagen. nov., is described based on several male-specific characters, along with description of its type species, Platyintybia zhongshanensissp. nov., from China. A new combination, Platyintybia sarawakensis (Champion, 1921), comb. nov., is proposed after examining the type specimen; this species is newly recorded from China. A key to the genera of Chinese Apalochrini is provided for the first time.

In this study, a new stag beetle of the genus Dorcus MacLeay, 1819 is described and illustrated, namely Dorcus liyuani Qi & Zhan, new species, from Gansu Province, northwestern China. The new species is very similar to its related species, especially D. tianlongi Wang & Zhou, 2019 and D. liyingbingi Huang & Chen, 2013, in external characters, but can be clearly distinguished by male genital features. There is also a clear geographical isolation between the new species and the closely related species.

In this paper, two new species of Buprestis subgenus Akiyamaia Kurosawa, 1988 are described: B. (A.) gengmini Qi & Song, new species from Yunnan Province, China and B. (A.) wenii Qi & Song, new species from Yen Bai Province, Vietnam. The descriptions and illustrations of two new species are provided, and the diagnostic characters are provided to distinguish the two new species from other related species. A key is given for identification of all Akiyamaia species.The holotype of B. (A.) costipennis (Fairmaire, 1891) and pictures of living individuals are illustrated for the first time.

Apalochrini is a tribe of the family Melyridae characterised by the shortened pedicel, with 13 genera recorded in China at present. Dicranolaius Champion and Intybia Pascoe of Apalochrini are distributed in Asia and Southeast Asia, with the former genus extending to Australia, but not being found in China. In a recent expedition in the mangrove forests of Zhangzhou City (Fujian Province), eastern China, specimens of D. mangalicola Asano ＆ Kawashima, 2010 and I. swatowensis (Wittmer, 1956) were collected. Dicranolaius Champion is recorded from China for the first time and I. swatowensis is newly recorded for Fujian Province. Diagnostic characters of D. mangalicola is provided and I. swatowensis is re-described in details. An updated key to genera of the Chinese Apalochrini, based on male characters, is given.