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Chrysochroinae Laporte de Castelnau, 1835 is the very colourful subfamily of Buprestidae. There are 127 species and subspecies of the subfamily which have been recorded in China.In this paper, we reported three genera, two subgenera and five species of the subfamily Chrysochroinae Laporte de Castelnau, 1835 (Coleoptera, Buprestidae) which are all newly recorded from China. These reported taxa belong to two tribes and four genera: Chrysochroa (Chroodema) corbetti (Kerremans, 1893), Chrysochroa (Pyranthe) fulgens ephippigera White, 1843, Demochroa (Demoxantha) gratiosa indica Csiki, 1900, Xanthocata bonvouloirii (Deyrolle, 1861) (all the above four being Chrysochroini) and Cardiaspis mouhotii E. Saunders, 1866 (Dicercini). The five newly-recorded species are briefly described, illustrated and supplemented with relevant biological information.

A new species Coomaniella (Coomaniella) dentata sp. nov. from Guangxi Province, China, is described and placed in the C. (C.) chinensis species-group. The variability is discussed, and a new adult host plant is recorded. New distributional records are given for C. biformissima Jendek & Kalashian, 1999 and C. lingafelteri Jendek & Pham, 2013.

Oomyzus spiraculus Song, Fei & Cao sp. nov. (Hymenoptera, Eulophidae) is described and illustrated as a gregarious larval-pupal endoparasitoid of Coccinella septempunctata L. (Coleoptera, Coccinellidae). Differentiation between O. spiraculus and its similar species is discussed and a key to differentiate the female and male of these species is provided. DNA barcodes of O. spiraculus and O. scaposus are analyzed and compared.

The genus Cantonius Théry, 1929 is a small group with two subgenera and 12 species. However, the biology of this genus is still unknown.In this paper, three species of the genus Cantonius Théry, 1929 were found on bamboo leaves, revealing for the first time that Cantonius species are also leaf-miners. Two new species were recorded from Jiangxi Province and are described here: Cantonius (Cantonius) anjiensis sp. n. (host plant: Pleioblastus amarus) and Cantonius (Procantonius) qiyunensis sp. n. (host plant: Bambusa blumeana) followed by C. (P.) austrisinicus Kalashian, 2021 (host plant: Oligostachyum paniculatum) recorded from Guangxi Province. Including habitats, photos of three species together with C. (P.) qiyunensis sp. n. pupa, host plants, and leaf mines of the three species are presented. Moreover, the bionomics and habits of the genus are discussed for the first time, and a hypothesis for the distribution of Cantonius is provided.

A new stag beetle fossil is described from the Yixian Formation in northeastern China. A new genus is established based on this well-preserved specimen. Prolucanus beipiaoensis gen. et sp. nov. is firmly placed in the extant lucanid subfamily Lucaninae based on its broad prosternal process and geniculate antennae. Our discovery represents the first fossil record of Lucaninae from the Late Mesozoic of China and the oldest reliable record belonging to the subfamily. We also summarize the fossil species of stag beetles found in China and the described fossil species of the subfamily Lucaninae found in the world. A key to all fossil genera of Lucanidae from China is provided.

The mid-Cretaceous Burmese amber has yielded a wide diversity of polyphagan beetles, but the fossil record of Buprestidae is comparatively sparse. Cretaceous buprestids in amber with exquisite morphological details are invaluable for understanding character evolution and the origin and diversification of extant subfamilies. Here we report an enigmatic jewel beetle, Dictyorachys callidictyus Li, Volkovitsh & Cai gen. et sp. nov., based on a wellpreserved specimen entombed in mid-Cretaceous amber from northern Myanmar. The unusual character combination of Dictyorachys is not consistent with any of the known buprestid subfamilies, which is therefore tentatively classified as Buprestidae incertae sedis. [ABSTRACT FROM AUTHOR]