AlveOderes gen. nov., the earliest fossil of Bothrideridae from mid-Cretaceous Burmese amber (Coleoptera: Coccinelloidea) Author Li, Yan-Da State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences. Nanjing 210008, China. & Bristol Palaeobiology Group, School of Earth Sciences, University of Bristol. Life Sciences Building, Tyndall Avenue, Bristol BS 8 1 TQ, United Kingdom. cycai@nigpas.ac Author Cai, Chen-Yang State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences. Nanjing 210008, China. text Zoologia 2024 e 23084 2024-06-07 41 1 10 http://dx.doi.org/10.1590/s1984-4689.v41.e23084 journal article 10.1590/S1984-4689.v41.e23084 1984-4689 13176683 Alveoderes Li & Cai gen. nov. https://zoobank.org/ E3511CF6-7C14-49C4-B488-09FC928B12A6 Type species. Alveoderes yamamotoi sp. nov. , by present designation and monotypy. Diagnosis. Body elongate. Antennae with 3-segmented club; antennomere 11 conical ( Fig. 8 ). Pronotum ( Fig. 5 ) with oval cavity at each anterior pronotal angle; disc with median longitudinal groove, posteriorly open and posterolaterally bordered by distinct posteriorly directed projections. Procoxae subcontiguous ( Fig. 9 ). Scutellar shield anteriorly emarginate ( Fig. 6 ). Elytra each with one short longitudinal ridge at base ( Fig. 6 ). Mesoventrite with longitudinal carinae ( Fig. 9 ). Protibial spurs unequal; one being enlarged and strongly curved ( Fig. 11 ). Abdominal ventrite 1 with broadly angulate intercoxal process ( Fig. 10 ). Figures 1–2. General habitus of Alveoderes yamamotoi Li & Cai gen. et sp. nov. , holotype, NIGP203385, under incident light: (1) dorsal view; (2) ventral view. Scale bars: 500 Μm. Etymology. The generic name is formed based on the Latin “ alveus ”, cavity, and“ deres ”, a common suffix for genera in Bothrideridae . The name is masculine in gender.