Abstract
Four new genera and five new species of anaxyelids are described from the Cretaceous of Asia: Mangus magnus gen. et sp. nov. from the Aptian of Mongolia (Bon-Tsagan), Urosyntexis undosa sp. nov., Parasyntexis khasurtensis gen. et sp. nov., both from the Early Cretaceous of Transbaikalia (Khasurty), Dolichosyntexis transbaikalicus gen. et sp. nov. from the Hauterivian–Barremian of Transbaikalia (Baissa), and Curiosyntexis magadanicus gen. et sp. nov. from the mid-Upper Cretaceous of NE Siberia (Obeshchayushchiy). Early Cretaceous is the time of the highest diversity of Anaxyelidae. In this epoch these sawflies are represented with all four subfamilies comprising the group. In Late Cretaceous anaxyelid diversity and abundance rapidly decrease and they are represented with the only subfamily Syntexinae. The anaxyelid collection of Palaeontological Institute (Moscow), the most representative collection of fossil anaxyelids in the world, has been completely revised, identified and described. The list of identifications is provided.
References
Heraty, J., Ronquist, F., Carpenter, J.M., Hawks, D., Schulmeister, S., Dowling, A.P., Murray, D., Munro, J., Wheeler, W.C., Schiff, N. & Sharkey, M. (2011) Evolution of the hymenopteran megaradiation. Molecular Phylogenetics and Evolution, 60 (1), 73–88.
https://doi.org/10.1016/j.ympev.2011.04.003
Herman, A.B. (2011) Arman’ Flora of the Magadan region and development of floras in the North Pacific during the Albian-Paleocene. Stratigraphy and Geological Correlation, 19, 71–86.
https://doi.org/10.1134/S0869593811010023
Kopylov, D.S. (2018) Forgotten giants: new Anaxyelidae (Hymenoptera) from the Jurassic of Karatau. Zootaxa, 4514 (3), 332–340.
https://doi.org/10.11646/zootaxa.4514.3.2
Kopylov, D.S. & Rasnitsyn, A.P. (2017) New Sepulcids (Hymenoptera: Sepulcidae) from the Lower Cretaceous of Asia. I. Parapamphiliinae and Xyelulinae. Paleontological Journal, 51, 66–72.
https://doi.org/10.1134/S0031030117010087
Martynov, A.V. (1925) To the knowledge of fossil insects from Jurassic beds in Turkestan. Bulletin de l’Academie des Sciences de l’URSS, 19, 753–762.
Middlekauff, W.W. (1974) Larva of wood-boring sawfly Syntexis libocedrii Rohwer (Hymenoptera: Syntexidae). The Pan-Pacific Entomologist, 50, 288–290.
Ortega-Blanco, J., Rasnitsyn, A.P. & Delclos, X. (2008) First record of anaxyelid woodwasps (Hymenoptera: Anaxyelidae)in Lower Cretaceous Spanish amber. Zootaxa, 1937, 39–50.
Rasnitsyn, A.P. (1963) Позднеюрские перепончатокрылые Каратау [Late Jurassic Hymenoptera of Karatau]. Палеонтологический журнал [Paleontological Journal], 86–93. [in Russian]
Rasnitsyn, A.P. (1968) Новые мезозойские пилильщики [New Mesozoic sawflies (Hymenoptera, Symphyta)]. In: Rohdendorf, B.B. (Ed.), Юрские насекомые Каратау [Jurassic insects of Karatau]. Nauka, Moscow, pp. 190–236. [in Russian]
Rasnitsyn, A.P. (1969) Происхождение и эволюция низших перепончатокрылых [Origin and Evolution of the Lower Hymenoptera]. Nauka, Moscow, 196 pp. [in Russian, Proceedings of the Paleontological Institute, Academy of Sciences USSR, 123]
Rasnitsyn, A.P. (1980) Происхождение и эволюция перепончатокрылых насекомых [The origin and evolution of Hymenoptera]. Nauka, Moscow, 192 pp. [in Russian]
Rasnitsyn, A.P. (1990) Hymenoptera = Vespida. In: Rasnitsyn, A.P. (Ed.), Поздне-мезозойские насекомые Восточного Забайколья [Late Mesozoic insects of Eastern Transbaikalia]. Nauka, Moscow, pp. 177–205. [in Russian, Proceedings of the Paleontological Institute, Academy of Sciences USSR, 239]
Rasnitsyn, A.P. & Martynez-Delclos, X. (2000) Wasps (Insecta: Vespida = Hymenoptera) from the Early Cretaceous of Spain. Acta Geológica Hispánica, 35, 65–95.
Rasnitsyn, A.P. & Zhang, H. (2004) Composition and age of the Daohugou hymenopteran (Insecta, Hymenoptera=Vespida) assemblage from Inner Mongolia, China. Palaeontology 47, 1507–1517.
https://doi.org/10.1111/j.0031-0239.2004.00416.x
Rasnitsyn, A.P. & Zherikhin, V.V. (2002) Selected insect fossil sites: Impression fossils. In: Rasnitsyn, A.P. & Quicke, D.L.J. (Eds.), History of Insects. Kluwer Academic Publishers, Dordrecht, pp. 437–444.
Rasnitsyn, A.P., Jarzembowski, E.A. & Ross, A.J. (1998) Wasps (Insecta: Vespida = Hymenoptera) from the Purbeck and Wealden (Lower Cretaceous) of southern England and their biostratigraphical and palaeoenvironmental significance. Cretaceous Research, 19, 329–391.
https://doi.org/10.1006/cres.1997.0114
Ronquist, F., Klopfstein, S., Vilhelmsen, L., Schulmeister, S., Murray, D.L. & Rasnitsyn, A.P. (2012) A Total-Evidence Approach to Dating with Fossils, Applied to the Early Radiation of the Hymenoptera. Systematic Biology, 61 (6), 973–999. https://doi.org/10.1093/sysbio/sys058
Sharkey, M.J., Carpenter, J.M., Vilhelmsen, L., Heraty, J., Liljeblad, J., Dowling, A.P.G., Schulmeister, S., Murray, D., Deans, A.R., Ronquist, F., Krogmann, L. & Wheeler, W.C. (2012) Phylogenetic relationships among superfamilies of Hymenoptera. Cladistics, 28 (1), 80–112.
https://doi.org/10.1111/j.1096-0031.2011.00366.x
Sinitsa, S.M. (1993) Юра и нижний мел Центральной Монголии [Jurassic and Lower Cretaceous of Central Mongolia]. Nauka, Moscow, 239 pp. [in Russian]
Taeger, A., Blank, S.M. & Liston, A.D. (2010) World catalog of Symphyta (Hymenoptera). Zootaxa, 2580, 1–1064.
Vilhelmsen, L. & Turrisi, G.F. (2011) Per arborem ad astra: Morphological adaptations to exploiting the woody habitat in the early evolution of Hymenoptera. Arthropod Structure & Development, 40, 2–20.
https://doi.org/10.1016/j.asd.2010.10.001
Vilhelmsen, L., Mikó, I. & Krogmann, L. (2010) Beyond the wasp-waist: structural diversity and phylogenetic significance of the mesosoma in apocritan wasps (Insecta: Hymenoptera): PHYLOGENY OF HYMENOPTERA. Zoological Journal of the Linnean Society, 159 (1), 22–194.
https://doi.org/10.1111/j.1096-3642.2009.00576.x
Wickman, B.E. (1967) Life History of the Incense-Cedar Wood Wasp, Syntexis libocedrii (Hymenoptera: Syntexidae). Annals of the Entomological Society of America, 60 (6), 1291–1295.
https://doi.org/10.1093/aesa/60.6.1291
Zhang, H. & Rasnitsyn, A.P. (2006) Two new anaxyelid sawflies (Insecta, Hymenoptera, Siricoidea) from the Yixian Formation of western Liaoning, China. Cretaceous Research, 27, 279–284.
https://doi.org/10.1016/j.cretres.2005.11.001
Zherikhin, V.V., Mostovski, M.B., Vrsansky, P., Blagoderov, V.A. & Lukashevich, E.D. (1998) The unique Lower Cretaceous locality Baissa and other contemporaneous fossil insect sites in North and West Transbaikalia. In: Proceeding First International Palaeoentomological Conference, Moscow 1998. AMBA, Bratislava, pp. 185–191.