Aegus taurus Boileau, 1899

Aegus taurus Boileau, 1899 . Bull. Soc. Ent. Fr., 48: 320. TL: N. Vietnam, Haut-Tonkin, Dong-Van. TD: MNHN.

Aegus beauchesnei Boileau, 1902a. Bull. Soc. Ent. Fr., 1902: 288. TL: N. Vietnam, Tonkin. TD: MNHN. syn. nov.

Aegus caprinus Didier, 1928 . Librairie speciale Agricole, Paris Fascicule 2: 60. TL: N. Vietnam, Nam Mar. TD: MNHN. syn. nov.

Distribution. China (Guangxi, Hainan), N. Vietnam.

Funding This research is supported by the National Natural Science Foundation of China (31071954, 31201745, 31572311).

Acknowledgements We are grateful to Ms. Valérie Lemaître for her help in translating from the French and checking the manuscript. We are also indebted to Mr. Max Barclay, Mr. Malcolm Kerley, Ms. Beulah Garner (Natural History Museum, London, UK) and Dr. Stéphane Boucher (Muséum National d’Histoire Naturelle, Paris, France), for their assistances during the corresponding author’s visit; to Dr. Johannes Frisch and Mr. Joachim Willers (Museum für Naturkunde, Humboldt- Universität, Berlin, Germany) for the loan of type material, to Dr. Luca Bartolozzi (Natural History Museum, Zoology Section ‘ La Specola’, University of Florence, Firenze, Italy) for his kind help during the corresponding author studied in Italy. Many thanks are also to: Dr. Siqin Ge, Dr. Meiying Lin and Dr. Hongbin Liang ( The National Zoological Museum of China, Beijing) for the loan of some specimens.