Abstract
Eoteredon lacoi gen. et sp. nov., is described from the early Eocene Green River Formation in Wyoming, the second fossil siricid genus and species described from North America. We propose Eoteredon as sister to the genus Teredon, whose sole species is one of the rarest of extant Siricidae. The majority of siricids today inhabit temperate Northern Hemisphere forests; Teredon cubensis, however, is one of its few species that live in megathermal tropical lowlands. The Eocene forest that Eoteredon inhabited had a mesothermal to megathermal climate. We place Eoteredon in the context of broad Cenozoic climate change.
References
Archibald, S.B. & Rasnitsyn, A.P. (2016) New early Eocene Siricomorpha (Hymenoptera: Symphyta: Pamphiliidae, Siricidae, Cephidae) from the Okanagan Highlands, western North America. The Canadian Entomologist, 148, 209–228. https://doi.org/10.4039/tce.2015.55
Archibald, S.B., Johnson, K.R., Mathewes, R.W. & Greenwood, D.R. (2011) Intercontinental dispersal of giant thermophilic ants across the Arctic during early Eocene hyperthermals. Proceedings of the Royal Society of London, (B), 278, 3679–3686. https://doi.org/10.1098/rspb.2011.0729
Archibald, S.B., and Makarkin, V.N. (2006) Tertiary Giant Lacewings (Neuroptera: Polystoechotidae) revision and description of new taxa from western North America and Denmark. Journal of Systematic Paleontology, 4, 119–155, 307 (errata). https://doi.org/10.1017/S1477201906001817
Archibald, S.B., Mathewes, R.W., & Greenwood, D.R. (2013) The Eocene apex of panorpoid scorpionfly family diversity. Journal of Paleontology, 87, 677–695. https://doi.org/10.1666/12-129
Benson, R.B. (1943) Studies in Siricidae, especially of Europe and southern Asia (Hymenoptera, Symphyta). Bulletin of Entomological Research, 34, 27–51. https://doi.org/10.1017/S0007485300023464
Billberg, G.J. (1820) Enumeratio Insectorum in Museo Gustav Johan Billberg. Typis Gadelianis, Stockholm, 138 pp. https://doi.org/10.5962/bhl.title.49763
Brikiatis, L. (2014) The De Geer, Thulean and Beringia routes: key concepts for understanding early Cenozoic biogeography. Journal of Biogeography, 41, 1036–1054. https://doi.org/10.1111/jbi.12310
Buchheim, P.H., Cushman, R.A. Jr. & Biaggi, R.E. (2011) Stratigraphic revision of the Green River Formation in Fossil Basin, Wyoming: overfilled to underfilled lake evolution. Rocky Mountain Geology, 46, 165–181. https://doi.org/10.2113/gsrocky.46.2.165
Climate-Data.Org (2021) website: https://en.climate-data.org/north-america/dominican-republic/puerto-plata/sosua-25563/ (accessed 23 April 2021)
Cresson, E.T. (1865) On the Hymenoptera of Cuba. Proceedings of the Entomological Society of Philadelphia, 4, 1–4.
Fricke, H.C. & Wing, S.L. (2004) Oxygen isotope and paleobotanical estimates of temperature and δ18O-latitude gradients over North America during the early Eocene. American Journal of Science, 304, 612–635. https://doi.org/10.2475/ajs.304.7.612
Goulet, H., Smith, D.R., Smith, M.A. & Fernandez-Triana, J. (2015) New country records for Teredon cubensis (Cresson) (Hymenoptera: Siricidae). Proceedings of the Entomological Society of Washington, 117, 522–524. https://doi.org/10.4289/0013-8797.117.4.522
Inglis, G.N., Bragg, F., Burls, N.J., Cramwinckel, M.J., Evans, D., Foster, G.L., Huber, M., Lunt, D.J., Siler, N., Steinig, S., Tierney, J.E., Wilkinson, R., Anagnostou, E., de Boer, A.M., Jones, T.D., Edgar, K.M., Hollis, C.J., Hutchinson, D.K. & Pancost, R.D. (2020) Global mean surface temperature and climate sensitivity of the early Eocene Climatic Optimum (EECO), Paleocene–Eocene Thermal Maximum (PETM), and latest Paleocene. Climate of the Past, 16, 1953–1968. https://doi.org/10.5194/cp-16-1953-2020
Iturralde-Vinent, M. (2006) Meso-Cenozoic Caribbean paleogeography: implications for the historical biogeography of the region. International Geology Review, 48, 791–827. https://doi.org/10.2747/0020-6814.48.9.791
Jouault, C., Pouillon, J.-M. & Nel, A. (2020) The first fossil horntail wasp (Hymenoptera: Siricidae) from Lower Cretaceous Crato Formation in Brazil. Palaeoentomology, 3, 382–389. https://doi.org/10.11646/palaeoentomology.3.4.10
Jurine, L. (1807) Nouvelle méthode de classer les Hyménoptères et les Diptères. Vol. 4. Chez J.J. Paschoud, Genève et Paris, 319 pp. https://doi.org/10.5962/bhl.title.60886
Konow, F.W. (1905) Hymenoptera fam. Siricidae. Genera Insectorum, 28, 1–14.
Little, S.A, Kembel, S.W & Wilf, P. (2010) Paleotemperature proxies from leaf fossils reinterpreted in light of evolutionary history. PLoS ONE, 5, e15161 https://doi.org/10.1371/journal.pone.0015161
Linnaeus, C. von (1758) Systema Naturae per regna tria naturae secundum classes, ordines, genera, species cum characteribus, differentiis, synonymis, locis. Ed. decima tertia, ad Editionem duodecimam reformata. Holmiae Direct, Laurentii Salvii, Typis Ioannis Thomae nob, De Trattnern, 823 pp. https://doi.org/10.5962/bhl.title.542
Luciani, V., D’Onofrio, R., Filippi, G. & Moretti, S. (2020) Which was the habitat of early Eocene planktic foraminifer Chiloguembelina? Stable isotope paleobiology from the Atlantic Ocean and implication for paleoceanographic reconstructions. Global and Planetary Change, 191, 103216. https://doi.org/10.1016/j.gloplacha.2020.103216
National Meteorological Service of Belize (2021) Website. http://nms.gov.bz/
Nel, A. (1988) Redescription de Eosirex ligniticus Piton, 1940 (Hymenoptera, Symphyta, Siricidae). L’Entomologiste, 44, 287–292.
Nel, A. (1991) Description et révision de trois “Siricidae” fossiles du Cénozoïque (Hymenoptera, Siricina, Vespina). Bulletin de la Société Entomologique de France, 96, 247–253. https://www.persee.fr/doc/bsef_0037-928x_1991_num_96_3_17719
Norton, E. (1869) Catalogue of the described Tenthredinidae and Uroceridae of North America. Transactions of the American Entomological Society, 2, 211–242 + 321–368. [https://www.jstor.org/stable/25076221] https://doi.org/10.2307/25076221
Pasteels, J. (1951) Sur quelques Tenthredinoidea africains. Bulletin et Annales de la Société Entomologique de Belgique, 887, 195–205.
Rajchel, J. & Uchman, A. (1998) Insect borings in Oligocene wood, Kliwa sandstones, Outer Carpathians, Poland. Annales Societatis Geologorum Poloniae, 68, 219–224.
Rasnitsyn, A.P. (1968) Novye Mezozojskie Pilil’shhiki (Hymenoptera, Symphyta). [New Mesozoic sawflies (Hymenoptera, Symphyta)]. In: Rodendorf, B.B. (Ed.) Jurskie Nasekomye Karatau [Jurassic insects of Karatau]. Nauka, Moscow, pp. 190–236. [In Russian].
Rasnitsyn, A.P. (1969) Origin and evolution of lower Hymenoptera. Trudy Paleontologicheskogo Instituta Akademii Nauk SSSR, 123, 1–196. [in Russian, with English translation by Amerind Co., New Delhi, India, 1979]
Riou, B. (1999) Descriptions de quelques insectes fossiles du Miocène supérieur de la Montagne d’Andance (Ardèche, France). Travaux de l’Ecole Pratique des Hautes Etudes, Biologie et Evolution des Insectes, 11–12, 123–133.
Schiff, N.M., Goulet, H., Smith, D.R., Boudreault, C., Wilson, A.D. & Scheffler, B.E. (2012) Siricidae (Hymenoptera: Symphyta: Siricoidea) of the Western Hemisphere. Canadian Journal of Arthropod Identification, 21, 1–305. https://biologicalsurvey.ca/ejournal/sgsbws_21/sgsbws_21.html
Smith, D.R. (1988) A synopsis of the sawflies (Hymenoptera: Symphyta) of America south of the United States: Introduction, Xyelidae, Pamphiliidae, Cimbicidae, Diprionidae, Xiphydriidae, Siricidae, Orussidae, Cephidae. Systematic Entomology, 13, 205–261. https://doi.org/10.1111/j.1365-3113.1988.tb00242.x
Smith, D.R. (2010) The woodwasp genus Eriotremex (Hymenoptera: Siricidae), a review and a new species from Malaysia. Proceedings of the Entomological Society of Washington, 112, 423–438. https://doi.org/10.4289/0013-8797.112.3.423
Smith, M.E. & Carroll, A.R. (2015) Introduction to the Green River Formation. In: Smith, M.E. & Carroll, A.R. (Eds.), Stratigraphy and Paleolimnology of the Green River Formation, Western USA. Springer, New York, pp. 1–12. https://doi.org/10.1007/978-94-017-9906-5_1
Smith, M.E., Carroll, A.R. & Singer, B. (2008) Synoptic reconstruction of a major ancient lake system: Eocene Green River Formation, western United States. Geological Society of America Bulletin, 120, 54–84. https://doi.org/10.1130/B26073.1
Smith, M.E., Chamberlain, K.R., Singer, B.S. & Carroll, A.R. (2010) Eocene clocks agree: Coeval 40Ar/39Ar, U-Pb, and astronomical ages from the Green River Formation. Geology, 38, 527–530. https://doi.org/10.1130/G30630.1
Taeger, A., Liston, A.D., Prous, M., Groll, E.K., Gehroldt, T. & Blank, S.M. (2018) ECatSym – Electronic World Catalog of Symphyta (Insecta, Hymenoptera). Program version 5.0 (19 Dec 2018). Data version 40. 23 September 2018. Senckenberg Deutsches Entomologisches Institut (SDEI), Müncheberg. https://sdei.de/ecatsym/ (accessed 29 December 2020)
Wedmann, S. (1998) First records of fossil tremecine hymenopterans. Palaeontology, 41, 929–938. https://www.palass.org/publications/palaeontology-journal/archive/41/5/article_pp929-938
Wedmann, S., Pouillon, J.-M. & Nel, A. (2014) New Palaeogene horntail wasps (Hymenoptera, Siricidae) and a discussion of their fossil record. Zootaxa, 3869 (1), 33–43. https://doi.org/10.11646/zootaxa.3869.1.3
Wilf, P. (2000) Late Paleocene–early Eocene climate changes in southwestern Wyoming: paleobotanical analysis. Geological Society of America Bulletin, 112, 292–307. https://doi.org/10.1130/0016-7606(2000)112<292:LPECCI>2.0.CO;2
Wolfe, J.A. (1975) Some aspects of plant geography of the Northern Hemisphere during the Late Cretaceous and Tertiary. Annals of the Missouri Botanical Garden, 62, 264–279. https://doi.org/10.2307/2395198
Zachos, J.C., Dickens, G.R. & Zeebe, R.E. (2008) An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics. Nature, 451, 279–283. https://doi.org/10.1038/nature06588