Three new species of the long-tailed wasp genus †Megacoxa Brazidec et al., 2024 (Hymenoptera: Megalyridae) from Kachin amber
Abstract
†Megacoxa is a recently described extinct genus of Megalyridae Schletterer, 1889 from Kachin amber with three described species until now. Here, we investigate four new fossils and integrate them in a phylogenetic framework. We describe three additional species of †Megacoxa: †M. brazideci sp. nov., †M. gungner sp. nov. and †M. mjoelner sp. nov. Furthermore, we describe the previously unknown female of †M. synchrotron Brazidec et al., 2024. We provide an emended diagnosis of †Megacoxa and a key to all recognized species. The continued expansion of the known Cretaceous diversity of Megalyridae underlines the relictual nature of the Recent fauna.
References
Blaimer B.B., Santos B.F., Cruaud A., Gates M.W., Kula R.R., Miko I., Rasplus J.-Y., Smith D.R., Talamas E.J., Brady S.G. & Buffington M.L. 2023. Key innovations and the diversification of Hymenoptera. Nature Communications 14: e1212. https://doi.org/10.1038/s41467-023-36868-4
Brazidec M., Vilhelmsen L., Boudinot B., Richter A.K.F., Hammel J., Perkovsky E.E., Fan Y., Wang B., Wang Z., Wu Q. & Perrichot V. 2024. Unveiling ancient diversity of long-tailed wasps (Hymenoptera: Megalyridae): new taxa from Cretaceous Kachin and Taimyr ambers and their phylogenetic affinities. Arthropod Systematics & Phylogeny 82: 151–181. https://doi.org/10.3897/asp.82.e111148
Brues C.T. 1923. A fossil genus of Dinapsidae from Baltic amber (Hymenoptera). Psyche 30: 31–35. Available from https://www.biodiversitylibrary.org/item/206998#page/41 [accessed 5 Feb. 2025].
Chen H., Liuhe B. & Zhang X. 2021. Two new species of the family Megalyridae (Hymenoptera) from China. ZooKeys 1043: 21–31. https://doi.org/10.3897/zookeys.1043.65223
Cresson E.T. 1887. Synopsis of the families and genera of the Hymenoptera of America, north of Mexico, together with a catalogue of the described species, and bibliography. Transactions of the American Entomological Society, Supplement 1887: 1–350. https://doi.org/10.5962/bhl.title.5531
Cruickshank R.D. & Ko K. 2003. Geology of an amber locality in the Hukawng Valley, northern Myanmar. Journal of Asian Earth Sciences 21: 441–455. https://doi.org/10.1016/S1367-9120(02)00044-5
Goloboff P.A. & Catalano S.A. 2016. TNT version 1.6, including a full implementation of phylogenetic morphometrics. Cladistics 32 (3): 221–238. https://doi.org/10.1111/cla.12160
Kieffer J.-J. 1900. Études sur les évaniides. Annales de la Société entomologique de France 68: 813–820. Available from https://www.biodiversitylibrary.org/item/34583#page/827 [accessed 5 Feb. 2025].
Klopfstein S., Vilhelmsen L., Heraty J.M., Sharkey M.J. & Ronquist F. 2013. The hymenopteran tree of life: evidence from protein-coding genes and objectively aligned ribosomal data. Plos ONE 8: e69344. https://doi.org/10.1371/journal.pone.0069344
Labandeira C.C. & Li L. 2021. The history of insect parasitism and the mid-Mesozoic parasitoid revolution. In: de Baets K. & Huntley J.W. (eds) The Evolution and Fossil Record of Parasitism: 377–533. Springer Nature Switzerland, Cham, Switzerland.
Linnaeus C. 1758. Systema Naturae, per Regna Tria Naturae Secundum Classes, Ordines, Genera, Species cum Characteribus, Differentiis, Synonymis, Locis. 10th Ed., Vol. 1. Laurentius Salvius, Holmiae [Stockholm].
Maddison W.P. & Maddison D.R. 2021. Mesquite: a Modular System for Evolutionary Analysis. Ver. 3.70 (released 21 Aug. 2021). Available from http://www.mesquiteproject.org [accessed 17 Jan. 2025].
Mao M., Gibson T. & Dowton M. 2014. Higher-level phylogeny of the Hymenoptera inferred from mitochondrial genomes. Molecular Phylogenetics and Evolution 84: 34–43. https://doi.org/10.1016/j.ympev.2014.12.009
Mita T. & Konishi K. 2011. Phylogeny and biogeography of Carminator (Hymenoptera: Megalyridae). Systematic Entomology 36: 104–114. https://doi.org/10.1111/j.1365-3113.2010.00548.x
Mita T. & Shaw S.R. 2020. A taxonomic study of Dinapsis Waterston, 1922 from Madagascar (Hymenoptera: Megalyridae, Dinapsini): crested wasps of the hirtipes species-group. Zootaxa 4858 (1): 71–84. https://doi.org/10.11646/zootaxa.4858.1.4
van Noort S., Shaw S.R. & Copeland R.S. 2022. Revision of the endemic African genus Dinapsis (Dinapsini, Megalyridae, Hymenoptera) with description of seven new species. ZooKeys 1112: 27–122. https://doi.org/10.3897/zookeys.1112.82307
Perrichot V. 2009. Long-tailed wasps (Hymenoptera: Megalyridae) from Cretaceous and Paleogene European amber. Paleontological Contributions 1: 1–19. https://doi.org/10.17161/PC.1808.5468
Poinar G.O. & Shaw S.R. 2007. Megalyra baltica Poinar and Shaw sp. nov. (Hymenoptera: Mega-lyridae), a long-tailed wasp from Baltic amber. Zootaxa 1478 (1): 65–68. https://doi.org/10.11646/zootaxa.1478.1.7
Rasnitsyn A.P. 1977. New Hymenoptera from the Jurassic and Cretaceous of Asia. Paleontologicheskii Zhurnal 1977: 98–108. [In Russian, English translation in Paleontological Journal 1978: 349–357].
Schletterer A. 1889. Die Hymenopteren-Gattungen Stenophasmus Smith, Monomachus Westwood, Pelecinus Latreille und Megalyra Westwood. Berliner Entomologische Zeitschrift 33: 197–250.
Schulz W.A. 1905. Hymenopteren-Studien. Engelmann, Leipzig.
Shaw S.R. 1987. Three new megalyrids from South America (Hymenoptera: Megalyridae). Psyche 94: 189–199. https://doi.org/10.1155/1987/28207
Shaw S.R. 1988. Carminator, a new genus of Megalyridae (Hymenoptera) from the Oriental and Australian regions, with a commentary on the definition of the family. Systematic Entomology 13: 101–113. https://doi.org/10.1111/j.1365-3113.1988.tb00233.x
Shaw S.R. 1990a. A taxonomic revision of the long-tailed wasps of the genus Megalyra Westwood (Hymenoptera: Megalyridae). Invertebrate Taxonomy 3: 1005–1052. https://doi.org/10.1071/IT9891005
Shaw S.R. 1990b. Phylogeny and biogeography of the parasitoid wasp family Megalyridae (Hymeno-ptera). Journal of Biogeography 17: 569–581. https://doi.org/10.2307/2845141
Shi G.H., Grimaldi D.A., Harlow G.E., Wang J., Wang J., Yang M.C., Lei W.Y., Li Q.L. & Li X.H. 2012. Age constraint on Burmese amber based on U-Pb dating of zircons. Cretaceous Research 37: 155–163. https://doi.org/10.1016/j.cretres.2012.03.014
Song N., Wei S.-J. & Wang M. 2024. Mitochondrial genome rearrangements and phylogenomics of the Hymenoptera (Insecta) using an expanded taxon sample. Mitochondrial DNA Part A [2024]: 1–17. https://doi.org/10.1080/24701394.2024.2345663
Tang P., Zhu J.-C., Zheng B.-Y., Wei S.-J., Sharkey M., Chen X.-X. & Vogler A.P. 2019. Mitochondrial phylogenomics of the Hymenoptera. Molecular Phylogenetics and Evolution 131: 8–18. https://doi.org/10.1016/j.ympev.2018.10.040
Turrisi G.F. & Vilhelmsen L. 2010. Into the wood and back: morphological adaptations to the wood-boring parasitoid lifestyle in adult aulacid wasps (Insecta, Hymenoptera: Aulacidae). Journal of Hymenoptera Research 19 (2): 244–258. Available from https://www.biodiversitylibrary.org/page/35235262#page/46 [accessed 5 Feb. 2025].
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., Perrichot V. & Shaw S.R. 2010. Past and present diversity in the parasitic wasp family Megalyridae (Insecta: Hymenoptera). Systematic Entomology 35: 658–677. https://doi.org/10.1111/j.1365-3113.2010.00537.x
Waterston J. 1922. A new family of Hymenoptera from South Africa. Annals and Magazine of Natural History 10 (58): 418–420. https://doi.org/10.1080/00222932208632792
Westwood J.O. 1832. Class Insecta. Supplement on the Hymenoptera. In: Griffith E. (ed.) The Animal Kingdom Arranged in Conformity with its Organization by the Baron Cuvier: 389–576. Whittaker, Treacher and Co., London.
Copyright (c) 2025 Lars Vilhelmsen, Qiong Wu, Zhen Wang, Tai-Ping Gao, Dong Ren
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