Abstract
A new species, Dorytomus mikhailovi sp. n., from late Eocene Rovno amber is described and illustrated. The new species is similar to D. groehni Bukejs et Legalov, 2019 from Baltic amber but differs in the shorter rostrum, dorsum covered with denser decumbent hairs and erect to semierect scale-like setae, and smaller body sizes. It is distinguished from D. bukejsi Legalov, 2020 from Baltic amber by the densely punctate pronotum, longer rostrum and wide elytral interstriae. The new species differs from D. vlaskini Legalov et al., 2019 from Rovno amber by the elytral interstriae covered with decumbent hairs and erect to semierect scale-like setae, shorter rostrum and coarsely punctuate pronotum. It is the first named curculionid beetle from the Olevsk amber locality, and the eleventh amber species reported from the Zhitomyr region. The presence of seven species of Dorytomus suggests a rather high diversity of Salicaceae in the late Eocene amber forests of Europe. It corresponds well with other principal Holarctic species in European amber biotas.
References
Alonso-Zarazaga, M.A., Barrios, H., Borovec, R., Bouchard, P., Caldara, R., Colonnelli, E., Gültekin, L., Hlaváč, P., Korotyaev, B., Lyal, C.H.C., Machado, A., Meregalli, M., Pierotti, H., Ren, L., Sánchez-Ruiz, M., Sforzi, A., Silfverberg, H., Skuhrovec, J., Trýzna, M., Velázquez de Castro, A.J. & Yunakov, N.N. (2017) Cooperative catalogue of Palaearctic Coleoptera Curculionoidea. Monografías electrónicas, 8, 1–729.
Anderson, R.S. (1997) Weevils (Coleoptera: Curculionoidea, excluding Scolytinae and Platypodinae) of the Yukon. In: Danks, H.V. & Downes, J.A. (Eds.), Insects of the Yukon. Biological Survey of Canada Ottawa, pp. 523–562.
Anderson, R.S. (2002) Curculionidae Latreille 1802. In: Arnett, R.H.Jr., Thomas, M.C., Skelley, P.E. & Frank, J.H. (Eds.), American beetles. Vol 2. Polyphaga: Scarabaeoidea through Curculionoidea. CRCPress, Boca Raton-London-New York-Washington, pp. 722–815.
Bukejs, A., Biondi, M. & Alekseev, V.I. (2016) New records and species of Crepidodera Chevrolat (Coleoptera: Chrysomelidae) in Eocene European amber, with a brief review of described fossil beetles from Bitterfeld amber. Zootaxa, 4193, 390–400. https://doi.org/10.11646/zootaxa.4193.2.13
Bukejs, A. & Legalov, A.A. (2019) A new species of the genus Dorytomus Germar, 1817 (Coleoptera, Curculionidae) from Baltic amber. Entomologica Fennica, 30 (4), 173–178. https://doi.org/10.33338/ef.87174
Colombo, W.D., Gobbi, F.T., Perkovsky, E.E. & Azevedo, C.O. (2020) Synopsis of the fossil Pristocerinae (Hymenoptera, Bethylidae), with description of two new genera and six species from Burmese, Taimyr, Baltic and Rovno ambers. Historical Biology, 1–17. https://doi.org/10.1080/08912963.2020.1733551
Czeczott, H. (1961) The flora of the Baltic amber and its age. Prace Muzeum Ziemi, 4, 119–145.
Dieckmann, L. (1986) Beiträge zur Insektenfauna der DDR: Coleoptera – Curculionidae (Erirhininae). Beiträge zur Entomologie, 36 (1), 119–181.
Dietrich, C.H., Dmitriev, D.A. & Perkovsky, E.E. A (2021) new leafhopper (Hemiptera: Cicadellidae) from late Eocene Rovno amber described based on the adult and associated last-instar nymph from Perebrody. Palaeoentomology [in press]
Fedotova, Z.A. & Perkovsky, E.E. (2015) New gall midges (Diptera, Cecidomyiidae, Stomatosematidi, Brachineuridi) from the Late Eocene amber of Gulyanka (Zhitomir Region, Ukraine). Paleontological Journal, 49 (3), 270–278. https://doi.org/10.1134/S0031030115030041
Fedotova, Z.A. & Perkovsky, E.E. (2017) New genus and species of gall midges (Diptera, Cecidomyiidae, Porricondylinae, Holoneurini) from the Late Eocene amber of Olevsk (Zhitomir Region, Ukraine). Vestnik Zoologii, 51 (1), 23–30. https://doi.org/10.1515/vzoo-2017-0004
Korotyaev, B.A. (1996) 131. Dorytomus Germ. In: Ler, P.A. (Ed.), Opredelitel’nasekomykh Dal’nego Vostoka Rossii. Tom 3. Zhestkokrylye, ili zhuki. Chast’ 3. Dal’nauka, Vladivostok, pp. 468–478. [in Russian]
Lawrence, J.F., Beutel, R.G., Leschen, R.A.B. & Ślipiński, A. (2010) Glossary of Morphological Terms. In: Leschen, R.A.B., Beutel, R.G. & Lawrence, J.F. (Eds.), Handbook of Zoology, Coleoptera, Beetles. Vol. 2. Morphology and Systematics (Elateroidea, Bostrichiformia, Cucujiformiapartim). Walter de Gruyter GmbH & Co., Berlín, New York, pp. 9–20. https://doi.org/10.1515/9783110911213.9
Legalov, A.A. (2015) Fossil Mesozoic and Cenozoic weevils (Coleoptera, Obrienioidea, Curculionoidea). Paleontological Journal, 49 (13), 1442–1513. https://doi.org/10.1134/S0031030115130067
Legalov, A.A. (2016a) Two new genera and four new species of fossil weevils (Coleoptera: Curculionoidea) in Baltic amber. Entomologica Fennica, 27 (2), 57–69. https://doi.org/10.33338/ef.59124
Legalov, A.A. (2016b) New weevils (Curculionidae) in Baltic amber. Paleontological Journal, 50 (9), 970–985. https://doi.org/10.1134/S0031030116090057
Legalov, A.A. (2020a) A review of the Curculionoidea (Coleoptera) from European Eocene ambers. Geosciences, 10 1(16), 1–74. https://doi.org/10.3390/geosciences10010016
Legalov, A.A. (2020b) Annotated key to weevils of the world. Part 4. Subfamilies Erirhininae, Dryophthorinae and Cossoninae (Curculionidae). Ukrainian Journal of Ecology, 10 (2), 319–331.
Legalov, A.A. (2020c) Fossil history of Curculionoidea (Coleoptera) from the Paleogene. Geosciences, 10 (9), 358, 1–50. https://doi.org/10.3390/geosciences10090358
Legalov, A.A., Nazarenko, V.Yu. & Perkovsky, E.E. (2018) A new genus of fungus weevils (Coleoptera: Anthribidae) in Rovno amber. Fossil Record, 21, 207–212. https://doi.org/10.5194/fr-21-207- 2018
Legalov, A.A., Nazarenko, V.Yu. & Perkovsky, E.E. (2019) New weevils (Coleoptera: Curculionidae) from Rovno amber. Paleontological Journal, 53 (10), 1045–1059. https://doi.org/10.1134/S0031030119100101
Legalov, A.A., Nazarenko, V.Yu & Perkovsky, E.E. (2021) A new species of the genus Glaesotropis Gratshev and Zherikhin, 1995 (Coleoptera, Anthribidae) from Rovno amber. Fossil Record, 24, 1–7. https://doi.org/10.5194/fr-24-1-2021
Melnitsky, S.I., Ivanov, V.D. & Perkovsky, E.E. (2021) A new species of the fossil genus Electrotrichia (Insecta: Trichoptera: Hydroptilidae) from Rovno amber (Zhytomyr region, Olevsk locality). Palaeoentomology [in press]
Mitov, P.G., Perkovsky, E.E. & Dunlop, J.A. (2021) Harvestmen (Arachnida: Opiliones) in Eocene Rovno amber (Ukraine). Zootaxa, 4984 (1), 43–72. https://doi.org/10.11646/zootaxa.4984.1.6
Nadein, K.S. & Perkovsky, E.E. (2010) New taxa of Chrysomelidae (Insecta: Coleoptera) from Rovno amber, Late Eocene. Acta Geologica Sinica, 84, 772–782. https://doi.org/10.1111/j.1755-6724.201000259.x
Nadein, K.S. & Perkovsky, E.E. (2019) Small and common: the oldest tropical Chrysomelidae (In-secta: Coleoptera) from the lower Eocene Cambay amber of India. Alcheringa: An Australasian Journal of Palaeontology, 43 (4), 597–611. https://doi.org/10.1080/03115518.2019.1622780
O’Brien, C.W. (1970) A taxonomic revision of the genus Dorytomus in North America (Coleoptera: Curculionidae). University of California Publications in Entomology, 60, 1–80. https://doi.org/10.1093/aesa/63.1.255
Perkovsky, E.E. (2017) Rovno amber caddisflies (Insecta, Trichoptera) from different localities, with information about three new sites. Vestnik zoologii, 51 (1), 15–22. https://doi.org/10.1515/vzoo-2017-0003
Pimenova, N.V. (1937) Тhе flora of the tertiary sandstones of the Westem Bank-Region of the Dnieper in the Ukr.S.S.R. Proceedings of the Institute of geology of Academy of Sciences of Ukr.S.S.R., 12, 177 pp. [in Ukrainian with expanded English summary]
Radchenko, A.G., Perkovsky, E.E. & Vasilenko, D.V. (2021) Formica species (Hymenoptera, Formicidae, Formicinae) in late Eocene Rovno amber. Journal of Hymenoptera Research, 82, 237–251. https://doi.org/10.3897/ jhr.82.64599
Sadowski, E.-M. (2017) Towards a new picture of the “Baltic amber forest” – flora, habitat types, and palaeoecology. PhD thesis. Georg-August University Göttingen. 323 pp. [http://hdl.handle.net/11858/00-1735-0000-0023-3FA3-8.]
Scudder, S.H. (1893) Tertiary Rhynchophorus Coleoptera of the United States. Monographs of the United States Geological Survey, 21, xi + 206 pp. + 12 pls. https://doi.org/10.5962/bhl.title.9006
Weitschat, W. & Wichard, W. (2002) Atlas of plants and animals in Baltic amber. Pfeil, München, 256 pp.
Wickham, H.F. (1912) On some fossil Rhynchophorus Coleoptera from Florissant Colorado. Bulletin of the American Museum of Natural History, 31, 41–55, I–IV.