Skip to main content Skip to main navigation menu Skip to site footer
Article
Published: 2022-04-13

First fossil representative of the sawfly subfamily Blennocampinae (Hymenoptera: Tenthredinidae)

: first fossil Blennocampinae

Institut de Systématique, Évolution, Biodiversité (ISYEB) Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, CP50, 57 rue Cuvier F-75005 Paris, France
College of Life Sciences, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
College of Life Sciences, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
##plugins.generic.jatsParser.article.authorBio##
×

MEI-CAI WEI

specialist on symphyta

Hymenoptera Tenthredinidae Biogeography Eocene Green River Formation Insecta ’Symphyta’ Tomostethini

Abstract

Eutomostethus karimae sp. nov., the first fossil representative of the sawfly subfamily Blennocampinae, is described from the Eocene Green River Formation (Colorado, USA). Extant representatives of the genus Eutomostethus are distributed in the Palaearctic and the Oriental regions, with two species probably introduced by humans in the Nearctic Region. The presence of a fossil related to this genus in the Eocene of North America is in accordance with the different land bridges present at that time and allowing important entomofaunal exchanges between this region and Eurasia. The present discovery also corroborates the recent estimate of the divergence of the subfamily Blennocampinae at the extreme end of the Cretaceous.

References

  1. 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

  2. Brown, R.W. (1934) The recognizable species of the Green River flora. United States Department of the Interior, Geological Survey, Professional Paper, 185-C, 45–77. https://doi.org/10.3133/pp185C

  3. Goulet, H. (1992) The genera and subgenera of the sawflies of Canada and Alaska (Hymenoptera: Symphyta). Insects and Arachnids of Canada Handbook Series, 20, 1–235.

  4. Goulet, H. & Huber, J.T. (1993) Hymenoptera of the World: an identification guide to families. Research Branch Agriculture Canada Publication, 1894/E, i–vii + 1–668.

  5. Haris, A. (2002) Sawflies from the Indomalay Islands (Hymenoptera: Tenthredinidae). Folia Entomologica Hungarica, 63, 87–103.

  6. Lacourt, J. (1989) Le genre Eutomostethus Enslin 1914 en Afrique du nord (Hymenoptera, Tenthredinidae). Bulletin Mensuel de la Société Linnéenne de Lyon, 58, 173–175. https://doi.org/10.3406/linly.1989.10877

  7. Lacourt, J. (2003) Réflexions sur la classification des Blennocampinae, avec description d’un nouveau genre et d’une nouvelle espèce du sud de la France et de Corse (Hymenoptera: Tenthredinidae). Bulletin de la Société Entomologique de France, 108, 495–529. https://doi.org/10.3406/bsef.2003.17011

  8. Malaise, R. (1964) New genera and species of the subfamily Blennocampinae (Tenthredinidae). Entomologiske Tidsskrift, 85, 20–39.

  9. Muche, W.H. (1987) Eine neue Art der Blennocampinae aus Nepal (Tenthredinidae). Reichenbachia, 24, 199–201.

  10. Nel, A., Sammut, R.M., Wei, M.C., Niu, G.Y. & Jouault, C. (2022) The first fossil representatives of the sawfly genera Emphytus and Empria from the upper Miocene of France (Hymenoptera, Tenthredinidae). Insects, 13, 218. https://doi.org/10.3390/insects13020218

  11. Niu, G.Y., Jiang, S.J., Dogan, Ö., Korkmaz, E.M., Budak, M., Wu, D. & Wei, M.C. (2021) Mitochondrial phylogenomics of Tenthredinidae (Hymenoptera: Tenthredinoidea) supports the monophyly of Megabelesesinae as a subfamily. Insects, 12, 1–17. https://doi.org/10.3390/insects12060495

  12. Nyman, T., Onstein, R.E., Silvestro, D., Wutke, S., Taeger, A., Wahlberg, N., Blank, S.M. & Malm, T. (2019) The early wasp plucks the flower: disparate extant diversity of sawfly super-families (Hymenoptera: “Symphyta”) may reflect asynchronous switching to angiosperm hosts. Biological Journal of the Linnean Society, 128, 1–19. https://doi.org/10.1093/biolinnean/blz071

  13. Saini, M.S. & Vasu, V. (1995) A new species of the genus Amonophadnus Rohwer from India, with a revised key to the Oriental species (Hymenoptera, Symphyta, Tenthredinidae: Blennocampinae). Entomologische Mitteilungen aus dem Zoologischen Museum Hamburg, 11, 201–204.

  14. Saini, M.S. & Vasu, V. (1996) Davida gen. n. (Hymenoptera: Symphyta: Tenthredinidae) from India. Folia Entomologica Hungarica, 57, 265–269.

  15. Saini, M.S., Vasu, V. & Smith, D.R. (2005) Review of the genus Eutomostethus Enslin (Hymenoptera, Tenthredinidae, Blennocampinae) from India, with new species and a key to species. Deutsche Entomologische Zeitschrift, 52, 139–153.  https://doi.org/10.1002/mmnd.200210007

  16. Seiyama, Y. (1981) A revision on the Japanese species of the genus Eutomostethus Enslin (Hymenoptera: Tenthredinidae). Transactions of the Shikoku Entomological Society, 15, 155–171.

  17. Smith, D.R. (1969) Nearctic sawflies. 1. Blennocampinae: adults and larvae (Hymenoptera: Tenthredinidae). United States Department of Agriculture, Technical Bulletin, 1397, 1–179.

  18. Smith, D.M. (2008) A comparison of plant-insect associations in the middle Eocene Green River Formation and the Upper Eocene Florissant Formation and their climatic implications, Geological Society of America Special Paper, 435, 89–103. https://doi.org/10.1130/2008.2435(06)

  19. 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

  20. 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

  21. Taeger, A., Blank, S.M. & Liston, A.D. (2010) World catalog of Symphyta (Hymenoptera). Zootaxa, 2580 (1), 1–1064. https://doi.org/10.11646/zootaxa.2580.1.1

  22. Togashi, I. (1982) Tenthredinoidea collected by the Zoological Museum Copenhagen expedition to Thailand. Kontyû, 50, 531–543.

  23. Vasu, V. & Saini, M.S. (1998) Taxonomic studies on Tomostethus gracilicornis (Rohwer) (Hymenoptera, Tenthredinidae: Blennocampinae). The Entomologist’s Monthly Magazine, 134, 315–318.

  24. Wei, M.C. & Nie, H.Y. (1998a) Generic list of Tenthredinoidea s. str. (Hymenoptera) in new systematic arrangement with synonyms and distribution data. Journal of Central South Forestry University, 18, 23–31.

  25. Wei, M.C. & Nie, H.Y. (1998b) Two new genera of Blennocampinae from East China (Hymenoptera: Tenthredinidae). Entomological Journal of East China, 7, 4–8.