Abstract
†Eoractocetus storozhenkoi gen et sp. nov. of the subfamily Atractocerinae is described from the Eocene Baltic amber, which differs from known fossil members of the subfamily mostly in its combinations of the characters of head, prothorax, scutellum, and proportions of abdominal ventrites. In order to justify the erection of the new genus, a preliminary elaboration of diagnostic characters of the atractocerine genera known in fossils was done. Analysis of all previous descriptions of atractocerine fossils made it possible to correct generic attributions of some species, and, in particular, to additionally introduce two new genera: †Eoractocetinus gen. nov. for two species described from Albian/Cenomanian Burmese amber, namely for †Raractocetus fossilis Yamamoto, 2019 (type species) and †Raractocetus extinctus Yamamoto, 2019, and also †Lymexylopsis gen. nov. for two species from Eocene Baltic and Rovno amber, †Raractocetus balticus Yamamoto, 2019 (type species) and †Raractocetus sverlilo Nazarenko, Perkovsky et Yamamoto in Yamamoto et al. 2022. Totally, eight atractocerine genera are recognized and provided with diagnoses.
References
- Chen, X. (2019) A new genus and species of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Paleontological Journal, 53, 1203–1205. https://doi.org/10.1134/S003103011911008X
- Chen, X.-Y. & Zhang, H.-C. (2020) A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa, 4878 (1), 195–200. https://doi.org/10.11646/zootaxa.4878.1.11
- Fleming, J. (1821) Insecta. In: Supplement to the Fourth, Fifth and Sixth Editions of the Encyclopaedia Britannica. Vol. 5. A. Constable, Edinburgh, pp. 41–56, pl. 85.
- Kirejtshuk, A.G. (2008) A new genus and species of timber beetle (Coleoptera: Lymexylidae) from the Baltic amber. Paleontological Journal, 42 (1), 63–65. https://doi.org/10.1134/S0031030108010103
- Kirejtshuk, A.G. (2021) On subfamily structure of the Cupedidae (Coleoptera, Archostemata): data from paleontology and an approach to solving conflicting classifications. Palaeoentomology, 4 (4), 353–359. https://doi.org/10.11646/palaeoentomology.4.4.10
- Kirejtshuk, A.G. (2025) Classification and taxonomy of the nitidulid-group of families (Coleoptera: Cucujoidea): comments on morphology, bionomics, phylogeny and methodology, with a key to species of the subgenus Myothorax Murray, 1864 of the genus Carpophilus Stephens, 1830 (Nitidulidae: Carpophilinae). Caucasian Entomological Bulletin, 21 (1), 127–192. https://doi.org/10.5281/zenodo.17079715
- Kirejtshuk, A.G., Shaw, J.J. & Smirnov, I.S. (2023) A new subgenus of the genus Phenolia (Coleoptera, Nitidulidae) from Myanmar Cretaceous amber with taxonomic, phylogenetic and bionomic notes on the ‘nitidulid’ group of families. Insects, 14, 647. https://doi.org/10.3390/insects14070647
- Kirejtshuk, A.G. & Azar, D. (2013) Current knowledge of Coleoptera (Insecta) from the Lower Cretaceous Lebanese amber and taxonomical notes for some Mesozoic groups. Terrestrial Arthropod Reviews, 6 (1–2), 103–134. https://doi.org/10.1163/18749836-06021061
- Kurosawa, Y. (1985) Revisional notes on the family Lymexylonidae (Coleoptera) in eastern and southeastern Asia. Bulletin of the National Museum of Nature and Science, Series A, 11, 109–119.
- Laporte, F.L.N. de (1840) Histoire naturelle des insectes Coléopteres; avec une introduction renfermant l’anatomie et la physiologie des animaux articulés, par M. Brullé. Tome premier. Histoire naturelle des animaux articulés, annelides, crustacés, arachnides, myriapodes et insectes Tome troisieme. P. Duménil, Paris, cxxv + 324 pp., 19 pls.
- Li, Y.-D., Peris, D., Yamamoto, S., Hsiao, Y., Newton, A.F. & Cai, C.-Y. (2022) Revisiting the Raractocetus Fossils from Mesozoic and Cenozoic Amber Deposits (Coleoptera: Lymexylidae). Insects, 13, 768. https://doi.org/10.3390/insects13090768
- Nazarenko, V., Perkovsky, E. & Vasilenko, D. (2020) New genus and species of Lymexylidae (Coleoptera) from Baltic amber. Paleontological Journal, 54 (12), 1395–1399. https://doi.org/10.1134/S0031030120120035
- Palisot de Beauvois, A.M.F.J. (1801) Mémoire sur un nouveau genre d’insecte trouvé en Afrique. La Décade Philosophique, Littéraire et Politique, 36, 513–518.
- Paulus, H. (2004) Urtea graeca nov. gen. et nov. spec., der erste Vertreter der tropischen Atractocerinae in Europa sowie eine Beschreibung von Hymaloxylon aspoecki nov. spec. aus Yunnan (China) (Coleoptera, Cucujiformia, Lymexylidae, Atractocerinae nov. status). Denisia, 13, 277–290.
- Perkovsky, E. (2022) Anancites nom. nov., a replacement name for Adamas Chen et Wang, 2020. (Coleoptera, Lymexylidae). Paleontological Journal, 56 (3), 327. https://doi.org/10.1134/S003103012203011X
- Wheeler, Q.D. (1986) Revision of the genera of Lymexylidae (Coleoptera, Cucujiformia). Bulletin of the American Museum of Natural History, 183, 113–210.
- Wolf-Schwenninger, K. (2011) The oldest fossil record of Lymexylidae (Insecta: Coleoptera) from the Lower Cretaceous Crato formation of Brazil. Insect Systematics & Evolution, 42, 205–212. https://doi.org/10.1163/187631211X578352
- Yamamoto, S. (2019) Fossil evidence of elytra reduction in ship-timber beetles. Scientific Reports, 9, 4938. https://doi.org/10.1038/s41598-019-41310-1
- Yamamoto, S., Nazarenko, V.Y., Vasilenko, D.V. & Perkovsky, E.E. (2022) First fossil species of ship-timber beetles (Coleoptera, Lymexylidae) from Eocene Rovno amber (Ukraine). Fossil Record, 25, 65–74. https://doi.org/10.3897/fr.25.81054