A new fossil genus of the family Glaphyridae (Coleoptera: Scarabaeoidea) from the Lower Cretaceous Yixian Formation

摘要

Lithohypna chifengensis, new genus and species of the family Glaphyridae MacLeay, 1819 is described and illustrated from the Lower Cretaceous Yixian Formation of Liutiaogou of Inner Mongolia, China. The extant Glaphyridae MacLeay, 1819 is comprised ofabout 200 species and subspecies in six genera (Carlson 2002; Nikodym 2005; Nikodym & Bezdek 2006; Nikodym & Keith 2007; Keith 2007, 2008a, 2008b; Keith & Uli-ana 2008; Sabatinelli & Uliana 2009; Uliana & Sabatinelli 2010). Most extant Glaphyridae genera are restricted to the Palaearctic (Medvedev 1960). The Nearctic region is home to only nine species within a single endemic genus, Lichnanthe Burmeister, 1844 (Carlson 2002). Species of the genus Amphicoma Latreille, 1807 occur in the Palaearctic and Oriental regions. The South American tribe Lichniini Burmeister, 1844 (Scarabaeidae: Melolonthinae) was recently transferred out of the family Glaphyridae based on morphological and DNA analysis (see Hawkins 2006).