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Exceptionally preserved beetles in a Triassic coprolite of putative dinosauriform origin Highlights d The beetle Triamyxa coprolithica is described from a Triassic coprolite d It represents the only member of the extinct myxophagan family Triamyxidae d The coprolite was likely produced by the dinosauriform Silesaurus opolensis d The beetle fossils parallel younger amber inclusions in preservation quality

Abstract We present an annotated catalogue for the tribe Incini (Coleoptera: Scarabaeidae: Cetoniinae) including references to all taxonomic and nomenclatural acts, clarifying the spelling of names, providing type depositories and occurrence records for the species. The spelling of Golinca davisii (Waterhouse, 1877) is fixed, and the incorrect subsequent spelling Pantodinus klugi Burmeister, 1847 is preserved. A comprehensive list of all valid names in Incini is provided. Furthermore, we describe the third species in the genus Archedinus Morón & Krikken, 1990, and first one known from outside of Mexico, A. antoshkai Seidel & Arriaga-Varela sp. nov. from Cerro las Minas, the highest mountain in Honduras. We provide an updated determination key for the species of Archedinus. The new species is compared with Archedinus howdeni Morón & Vaz-de-Mello, 2007, the most similar species in terms of genital and habitus morphology. An updated key to identification of males of Archedinus is provided.

The representatives of the genus Cercyon Leach occurring in the Greater Antilles are reviewed. Ten species are recorded, of which five are described here as new: C. gimmeli sp. n. (Dominican Republic), C. armatipenis sp. n. (Dominican Republic), C. taino sp. n. (Dominican Republic), C. sklodowskae sp. n. (Jamaica) and C. spiniventris sp. n. (Dominican Republic). Diagnoses and detailed distributional data are also provided for C. floridanus Horn, 1890 (distributed in southeastern United States of America and Cayman Islands), C. insularis Chevrolat, 1863 (endemic to the Antilles) C. praetextatus (Say, 1825) (widely distributed in the New World incl. Greater Antilles), C. quisquilius (Linnaeus, 1761) (an adventive species of Paleartic origin) and C. nigriceps (Marshall, 1802) (an adventive species probably of Oriental origin). Cercyon armatipenis, C. gimmeli, C. taino form a group of closely related species only distinguishable by male genitalia and DNA sequences. A key to the Great Antillean Cercyon is provided and important diagnostic characters are illustrated. The larvae of C. insularis and C. taino were associated with adults using COI barcode sequences, illustrated and diagnosed. Full occurrence data, additional images and COI barcode sequences were submitted to open access on-line depositories in an effort to provide access to complete data.