A new species of the genus Macronychus Mller, 1806 from China (Coleoptera, Elmidae).

Macronychus xuhaoi sp. nov., a new species of the genus Macronychus Mller, 1806 is described from Xizang, Southwest China. The new species belongs to Macrynychus quadriluberculatus species group. Habitus and other diagnostic features of the new species are described and illustrated.

Three new species of the genus Zaitzevia Champion, 1923 (Coleoptera, Elmidae) from China.

Three new riffle beetles of the genus Zaitzevia Champion, 1923 are described from China, namely Zaitzeviasichuanensissp. nov. and Zaitzeviafengtongzhaiensissp. nov. from Sichuan Province, and Zaitzeviayingzuijieensissp. nov. from Hunan Province. Habitus and diagnostic features of the new species are illustrated. A checklist of all known Chinese Zaitzevia species is given, and a key and distributional map of Zaitzevia species from the Chinese mainland are provided.

Discovery of the termitophilous genus Trichopsenius Horn, 1877 (Coleoptera, Staphylinidae, Aleocharinae) from China with description of a new species.

The termitophilous genus Trichopsenius Horn, 1877 is recorded from China for the first time. A new species, Trichopseniushuaxiensissp. nov. is described; it was collected in a nest of the termite genus Reticulitermes Holmgren from a dead and flattened pine tree.

New species and distributional records of the genus Broscosoma Rosenhauer, 1846 (Coleoptera, Carabidae, Broscinae) from Fujian, China.

A new species of the genus Broscosoma Rosenhauer, 1846 is described from Fujian Province, China. New distributional records of Broscosoma guoliangi Jiang, Liu & Wang, 2021 are added. Distributional map of known Broscosoma species from Fujian Province and the key to Broscosoma species from Southeast China are also provided.

Discovery of Grouvellinus huaxiensis sp. nov. (Coleoptera: Elmidae) from the urban river Huaxi in Guiyang, China.

Grouvellinus huaxiensis sp. nov. was collected from Huaxi river in an urban setting of Guiyang (Guizhou, China) in 2021. Habitus and diagnostic features of the new species are described and illustrated herein. The new discovery reflects that the water quality and ecological stability of urban rivers is not necessarily in conflict with anthropogenic activities in the surrounding, which also provides us new insights into the protection of urban freshwater ecosystems.

Additional new species of the genus Hexarhopalus Fairmaire, 1891 (Coleoptera, Tenebrionidae: Cnodalonini) from China.

Three new species of the genus Hexarhopalus Fairmaire, 1891, all of the nominate subgenus, are described and figured from China: Hexarhopalus (Hexarhopalus) ferreri sp. nov. from Yunnan, H. (H.) tianbaoyanensis sp. nov. from Fujian, and H. (H.) yeziyangi sp. nov. from Jiangxi.

Fire-prone Rhamnaceae with South African affinities in Cretaceous Myanmar amber.

The rapid Cretaceous diversification of flowering plants remains Darwin's 'abominable mystery' despite numerous fossil flowers discovered in recent years. Wildfires were frequent in the Cretaceous and many such early flower fossils are represented by charcoalified fragments, lacking complete delicate structures and surface textures, making their similarity to living forms difficult to discern. Furthermore, scarcity of information about the ecology of early angiosperms makes it difficult to test hypotheses about the drivers of their diversification, including the role of fire in shaping flowering plant evolution. We report the discovery of two exquisitely preserved fossil flower species, one identical to the inflorescences of the extant crown-eudicot genus Phylica and the other recovered as a sister group to Phylica, both preserved as inclusions together with burned plant remains in Cretaceous amber from northern Myanmar (~99 million years ago). These specialized flower species, named Phylica piloburmensis sp. nov. and Eophylica priscastellata gen. et sp. nov., exhibit traits identical to those of modern taxa in fire-prone ecosystems such as the fynbos of South Africa, and provide evidence of fire adaptation in angiosperms.

Description of the mature larva and pupa of Synchroa chinensis Nikitsky, 1999 (Coleoptera, Synchroidae).

During our field work, a series of larvae of the family Synchroidae was collected under the bark of dead trees. Subsequently, most larvae were reare to adults in a lab and were identified as Synchroa chinensis Nikitsky, 1999. In the present paper, we describe the mature larva and pupa of S. chinensis for the first time.

Zaitzevia tangliangi sp. nov. a new riffle beetle from China (Coleoptera:Elmidae: Macronychini).

A new riffle beetle of the genus Zaitzevia Champion, 1923, Z. tangliangi sp. nov. from Hubei Province, China is described. Habitus and other diagnostic features of the new species are described and illustrated. Habitat information and collection data of the new species are also provided.

Three new species of the genus Hexarhopalus Fairmaire, 1891 (Coleoptera, Tenebrionidae: Cnodalonini) from China.

Three new species of the genus Hexarhopalus Fairmaire, 1891 are described and figured from China: Hexarhopalus (Hexarhopalus) yunnanensis sp. nov. from Yunnan, Hexarhopalus (Hexarhopalus) zhuxiangi sp. nov. from Guangxi, and Hexarhopalus (Leprocaulus) nanlingensis sp. nov. from Guangdong. A revised key is provided to the species of Hexarhopalus from China.

A new termitophilous genus and species of the tribe Amarygmini Gistel, 1848 from China (Coleoptera: Tenebrionidae).

A new genus and species, Termitocnemis huangi gen. et sp. nov., of the tenebrionine tribe Amarygmini Gistel, 1848 is described from Fujian Province, southeastern China. All specimens were collected from a healthy nest of the termite genus Nasutitermes Dudley, 1890, implying that this species is truly termitophilous. Transitional habitus characters of the new species shed further light on the evolution of amarygmine beetles from free-living to termitophily. Given the discovery of this new genus a revised key is provided to the Oriental genera of termitophilous Amarygmini.

A new species of the genus Apteroloma Hatch, 1927 (Coleoptera, Agyrtidae) from China.

A new species of the genus Apteroloma Hatch, 1927 is described from China: Apteroloma qiului sp. nov. from Hubei Province. Habitus and diagnostic features of the adult are described and illustrated.

New species and new distributional record of the genus emBroscosoma/em Rosenhauer, 1846 (Coleoptera, Carabidae, Broscinae) from China.

Two new species of the genus Broscosoma Rosenhauer, 1846 are described from China: Broscosoma guoliangi sp. nov. from Fujian Province and Broscosoma qiului sp. nov. from Chongqing City, respectively. In addition, Broscosoma ribbei rougeriei Deuve Tian, 2002 is newly recorded from Derung-Nu Autonomous County Gongshan, Yunnan Province, China.

Description of the male of emPterorthochaetes/em emyunnanensis/em Ballerio, 2014 (Coleoptera: Scarabaeoidea: Hybosoridae: Ceratocanthinae).

The ceratocanthine genus Pterorthochaetes Gestro, 1898 (Coleoptera: Scarabaeoidea: Hybosoridae) includes about 26 valid species and occurs from the eastern Himalaya (Nepal and India) and southern China to northern Australia (Queensland) and Vanuatu Islands (Paulian 1978, 1987; Ballerio 1999, 2006, 2013, 2014).

emSphaeraphodius/em emgaohani/em, a new genus and species of Aphodiini (Coleoptera: Scarabaeidae: Aphodiinae) from Guangxi, China.

Sphaeraphodius gaohani Kakizoe, Jiang Wang, a new genus and new species of the tribe Aphodiini, is described based on two female specimens from Guangxi, China. This new genus differs considerably from any previously known genera of Aphodiini by dorsally swollen body covered by considerably long setae, and lack of transverse setiferous carinae on outer surfaces of meso- and metatibiae. This new taxon is found sympatrically with the termite Macrotermes sp. in the field. Therefore, this species is perhaps termitophilous, but we cannot conclude it at this time due to the insufficient information available in the field.

Discovery of the genus Dioedus LeConte, 1862 from China, with description of a new species (Coleoptera: Tenebrionidae).

The genus Dioedus LeConte, 1862 (Coleoptera: Tenebrionidae: Phrenapatinae: Penetini) is recorded from China for the first time. A new species Dioedus liuhaoyii Jiang, Wang Wang sp. nov. is described from Henan Province, China. Habitus and diagnostic features of the adult of the new species are described and illustrated.

A taxonomic revision of the genus Hexarhopalus (Coleoptera, Tenebrionidae: Cnodalonini) from China.

Chinese components of the genus Hexarhopalus Fairmaire, 1891 are revised. Four new species, Hexarhopalus (Hexarhopalus) liuyixiaoi Jiang, Bai, Ren Wang sp. nov. from Hunan and Hubei, Hexarhopalus (Leprocaulus) qiujianyueae Jiang, Bai, Ren Wang sp. nov. and Hexarhopalus (Leprocaulus) qiului Jiang, Bai, Ren Wang sp. nov. from Yunnan and Hexarhopalus (Leprocaulus) xuhaoi Jiang, Bai, Ren Wang sp. nov. from Xizang are described, figured and compared with their congeners. Hexarhopalus (Leprocaulus) difformis (Pic, 1922) is recorded from Yunnan, China for the first time. New distributional records are provided for Hexarhopalus (Leprocaulus) bisinuatus Ren Xu, 2011 from Hunan, Sichuan and Fujian, China. Supplementary description is presented for Hexarhopalus (Hexarhopalus) sculpticollis Fairmaire, 1891, Hexarhopalus (Hexarhopalus) sculptilis Kaszab 1960 and Hexarhopalus (Leprocaulus) difformis (Pic, 1922) to include the genital characters. A checklist, key and the distribution map of all known Chinese Hexarhopalus species are also provided.