Rhomeocalpsua torosa gen. et sp. nov., a unique lineage of Endomychidae from mid-Cretaceous Burmese amber (Coleoptera: Coccinelloidea) Author Li, Yan-da Author Tomaszewska, K. Wioletta Author Huang, Di-ying Author Cai, Chen-yang text Palaeoentomology 2022 2022-04-29 5 2 146 154 http://zoobank.org/5ff5f114-8d18-4fad-9586-b95802e3f2ec journal article 55629 10.11646/palaeoentomology.5.2.7 db551f98-1fc0-4459-82fe-9c90624f819d 2624-2834 6530503 5FF5F114-8D18-4FAD-9586-B95802E3F2EC Genus Rhomeocalpsua Li, Tomaszewska & Cai , gen. nov. Type species. Rhomeocalpsua torosa sp. nov. Etymology. The generic name is an anagram of Holoparamecus , a genus in Endomychidae : Merophysiinae . The name is feminine in gender. Diagnosis. Body relatively elongate. Head with antennal sockets visible from above ( Fig. 5C ). Antennae composed of nine antennomeres, with club built of three antennomeres; antennomere 7 strongly asymmetrical; antennomere 8 strongly enlarged ( Figs 4C, D , 5F ). Apical labial palpomeres apparently enlarged ( Fig.4B ). Prothorax posteriorly constricted; pronotal disc without pits, sulci or carinae ( Fig. 3A ). Mesocoxal cavities broadly closed ( Fig. 4E ). Mesotrochantins concealed ( Fig. 4E ). Femora with deep and long grooves along inner side ( Fig. 4E, F ). Tarsi simple, 3-3-3 ( Fig. 4H, I ).