Jarzembowski, Edmund A., Wang, B. & Zheng, D., October 2017. A slender new archaic beetle in Burmese amber (Coleoptera: Archostemata). Alcheringa 42, 110-114. ISSN 0311-5518.A new archostematan beetle, Clessidromma palmeri gen. et sp. nov. (Insecta: Coleoptera) is described from mid-Cretaceous Burmese amber from northern Myanmar. It has a uniquely specialized body form for which a new stem tribe, Clessidromatini trib. nov., is proposed in the subfamily Ommatinae of the family Cupedidae sensu lato.Edmund Jarzembowski* [jarzembowski2@live.co.uk] Bo Wang dagger [bowang@nigpas.ac.cn] and Daran Zheng double dagger [darzheng@connect.hku.hk] State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Rd, Nanjing 210008, PR China. *Also affiliated with: Department of Earth Sciences, The Natural History Museum, London SW7 5BD, UK. dagger Also affiliated with: Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Science, Beijing 100101, PR China. double dagger Also affiliated with: Daran Zheng, Department of Earth Sciences, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.