A bonanza of Cretaceous fossils provides insights into the evolution of antennal protection in clown beetles (Coleoptera: Histeridae) Author Simon-Pražák, Jan Charles University, Faculty of Science, Department of Zoology, Viničná 7, 12800 Prague 2, Czech Republic & Museum of Eastern Bohemia in Hradec Králové, Eliščino nábřeží 465, 500 03 Hradec Králové 3, Czech Republic j.prazak@muzeumhk.cz Author Yamamoto, Shûhei The Hokkaido University Museum, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060 - 0810, Japan Author Lackner, Tomáš Department of Environmental Systems Science, ETH Zürich, Weinbergstrasse 56, 8092 Zürich, Switzerland Author Fikáček, Martin Department of Biological Sciences, National Sun Yat-sen University, No. 70, Lienhai Rd., Kaohsiung 80424, Taiwan & Department of Entomology, National Museum, Cirkusová 1740 CZ- 19300 Praha 9, Czech Republic Author Prokop, Jakub Charles University, Faculty of Science, Department of Zoology, Viničná 7, 12800 Prague 2, Czech Republic & Department of Plant and Environmental Sciences, Clemson University, Clemson, SC 29634, United States Author Caterino, Michael S text Zoological Journal of the Linnean Society 2024 zlae 137 2024-11-20 202 3 1 28 https://doi.org/10.1093/zoolinnean/zlae137 journal article 10.1093/zoolinnean/zlae137 0024-4082 9059AA2-5086-46AD-85C6-DBDA56CA72E0 Miculissima gen. nov. Type species. Miculissima excavata sp. nov .. Diagnosis: Tiny body size, body oval-shaped and glabrous. Frons flat, wide, clypeus convex, labrum short and wide, with a pair of prominent setae laterally. Antennal club round with two distinct annuli. Eyes convex. Pronotum widely angular posteriorly, with complete marginal stria and a lateral pronotal stria. Scutellar shield tiny, triangular. Prosternal hypomeron widely excavate and irregularly structured, with a weakly defined antennal cavity. Prosternum with fissures for antennal passage. Prosternal process short, without prosternal lobe, slightly emarginate posteriorly. Tibiae simple, slightly widened, with several spines. Etymology: Feminine, derived from the Latin noun ‘mica’ which translates as crumb, grain or morsel.