The revision of fossil big-eyed bugs suggests a peculiar evolutionary history of a peculiar true bug family (Heteroptera: Lygaeoidea: Geocoridae)

• DOI: 10.1007/s12549-022-00567-7
• Publication Date: 2023-01-17T11:39:53Z
• Authors: Péter Kóbor; Eduardo I. Faúndez; Marcos Roca-Cusachs
• Keywords: Type genus; Cenomanian

Abstract The fossil record of the lygaeoid true bug family, Geocoridae so far consisted a compression from Florissant Formation, Geocoris infernorum , and mould Izarra G . monserrati Here, we report third taxon, Protogeocoris arcanus gen. et sp. nov. Cenomanian Burmese amber along with revision two previously mentioned species. study specimens resulted in erecting new genus, Eocenogeocoris to accommodate [ = (Sudder, 1890) comb. nov.], because its unique combination characters compared extant geocorine bugs. Furthermore, interpretation novel morphological data acquired geocorids context knowledge on representatives family suggests that characteristic groups may have been evolved until mid-Cretaceous, whilst species-level diversity nominotypical Fallén, 1814, closely allied genera is possibly by quick radiation event after climatic changes at Eocene-Oligocene boundary.