Abstract
A new fossil earwig nymph, Eminepygia myanmarensis gen. et sp. nov. (Pygidicranidae), from the mid-Cretaceous amber of Myanmar, is described and figured. Eminepygia myanmarensis gen. et sp. nov. can be readily distinguished from all other extinct and recent members of Dermaptera by the prominent bulges on the last three terga. Our new finding sheds further light on the diversity and morphological disparity of fossil dermapterans during the Late Mesozoic.
References
Brindle, A. (1987) Order Dermaptera. In: Stehr, F.W. (Ed.), Immature Insects. Dubuque: Kendall Hunt Publishing, Dubuque, Iowa, pp. 171–178.
Cockerell, T.D.A. (1920) Fossil arthropods in the British Museum – IV. Annals and Magazine of Natural History, 6 (27), 211–214.
https://doi.org/10.1080/00222932008632433
Cruickshank, R.D. & Ko, K. (2003) Geology of an amber locality in the Hukawng Valley, northern Myanmar. Journal of Asian Earth Sciences, 21 (5), 441–455.
https://doi.org/10.1016/S1367-9120(02)00044-5
Engel, M.S. (2011) New earwigs in mid-Cretaceous amber from Myanmar (Dermaptera, Neodermaptera). ZooKeys, 130, 137–152.
https://doi.org/10.3897/zookeys.130.1293
Engel, M.S. (2016) The earwig genus Paralabella Steinmann in amber from the Dominican Republic, with remarks on the classification of Burr’s Eocene Dermaptera. Entomologist’s Monthly Magazine, 152 (21), 121–130.
Engel, M.S. (2017) The first fossil occurrence of the earwig subfamily Geracinae (Dermaptera). Entomologist’s Monthly Magazine, 153 (24), 31–43.
Engel, M.S. & Haas, F. (2007) Family-group names for earwigs (Dermaptera). American Museum Novitates, 3567 (May 2007), 1–20.
https://doi.org/10.1206/0003-0082(2007)539[1:FNFED]2.0.CO;2
Engel, M.S. & Grimaldi, D.A. (2004) A primitive earwig in Cretaceous amber from Myanmar (Dermaptera: Pygidicranidae). Journal of Paleontology, 78 (5), 1018–1023.
https://doi.org/10.1666/0022-3360(2004)078%3C1018:APEICA%3E2.0.CO;2
Engel, M.S. & Grimaldi, D.A. (2014) New mid-Cretaceous earwigs in amber from Myanmar (Dermaptera). Novitates Paleoentomologicae, 6 (1), 1–16.
https://doi.org/10.17161/np.v0i6.4676
Engel, M.S., Ortega-Blanco, J. & Azar, D. (2011) The earliest earwigs in amber (Dermaptera): a new genus and species from the Early Cretaceous of Lebanon. Insect Systematics and Evolution, 42 (2), 139–148.
https://doi.org/10.1163/187631211X555717
Engel, M.S., Peris, D., Chatzimanolis, S. & Delclòs, X. (2015) An earwig (Insecta: Dermaptera) in Early Cretaceous amber from Spain. Insect Systematics and Evolution, 46 (2015), 291–300.
https://doi.org/10.1163/1876312x-45032121
Engel, M.S. & Perrichot, V. (2014) An earwig in Late Cretaceous Vendean amber (Dermaptera). Paleontological Contributions, 10D (10), 16–20.
https://doi.org/10.17161/PC.1808.15984
Kelly, R.S., Ross, A.J. & Jarzembowski, E.A. (2017) Earwigs (Dermaptera) from the Mesozoic of England and Australia, described from isolated tegmina, including the first species to be named from the Triassic. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 2017, 1–15.
https://doi.org/10.1017/S1755691017000329
Jarzembowski, E.A. (1999) Arthropods 2: Insects, In: Swift, A. & Martill, D.M. (Eds.), Fossils of the Rhaetian Penarth Group. The Palaeontological Association, London, pp. 149–160.
Nel, A.A., Garrouste, C. & Waller, A. (2012) Evolution and palaeosynecology of the Mesozoic earwigs (Insecta: Dermaptera ). Cretaceous Research, 33 (1), 1–195.
https://doi.org/10.1016/j.cretres.2011.10.002
Ren, D., Shih, C.K., Gao, T.P., Wang, Y.J. & Yao, Y.Z. (2019) Rhythms of insect evolution – Evidence from the Jurassic and Cretaceous in Northern China. Wiley Blackwell, New York, 710 pp.
https://doi.org/10.1002/9781119427957
Ren, M. Y., Zhang, W. T., Shih, C. K. & Ren, D. (2017) A new earwig (Dermaptera: Pygidicranidae) from the Upper Cretaceous Myanmar amber. Cretaceous Research, 74, 137–141.
https://doi.org/10.1016/j.cretres.2017.02.012
Ren, M.Y., Zhang, W.T., Shih, C.K. & Ren, D. (2018) Earwig nymphs (Dermaptera) from the mid-Cretaceous amber of Myanmar. Cretaceous Research, 2018, S0195667118301083.
https://doi.org/10.1016/j.cretres.2018.06.010.
Ross, A.J. & Engel, M.S. (2013) The first diplatyid earwig in Tertiary amber (Dermaptera: Diplatyidae): a new species from Miocene Mexican amber. Insect Systematics and Evolution, 44, 157–166.
https://doi.org/10.1163/1876312x-44032096
Shi, G., Grimaldi, D.A., Harlow, G.E., Wang, J., Wang, J., Yang, M., Lei, W., Li, Q. & Li, X. (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
Wappler, T., Engel, M.S. & Hass, F. (2005) The earwigs (Dermaptera: Forficulidae) from the middle Eocene Eckfeld Maar, Germany. Polskie Pismo Entomologiczne, 74, 227–250.
https://doi.org/10.1163/1876312X-45032121
Xing, C.Y., Shih, C.K., Zhao, Y.Y. & Ren, D. (2016) New protodiplatyids (Insecta: Dermaptera) from the Lower Cretaceous Yixian Formation of Northeastern China. Cretaceous Research, 64, 59–66.
https://doi.org/10.1016/j.cretres.2016.03.016.
Yang, D., Shih, C.K. & Ren, D. (2015) The earliest pygidicranid (Insecta: Dermaptera) from the Lower Cretaceous of China. Cretaceous Research, 52 (Part B), 329–335.
https://doi.org/10.1016/j.cretres.2014.03.008.
Yin, Z.W., Cai, C.Y. & Huang, D.Y. (2018) Last major gap in scydmaenine evolution filled (Coleoptera:Staphylinidae). Cretaceous Research, 84, 62–68.
https://doi.org/10.1016/j.cretres.2017.10.026
Zhang, J.F. (1994) Discovery of primitive fossil earwigs (Insecta) from the Late Jurassic of Laiyang, Shandong and its significance. Acta Palaeontologica Sinica, 33, 229–245.
Zhao, J.X., Zhao, Y.Y., Shih, C.K., Ren, D. & Wang, Y. (2010) Transitional fossil earwigs – a missing link in Dermaptera evolution. BMC Evolutionary Biology, 10 (1), 344.
https://doi.org/10.1186/1471-2148-10-344.
Zhao, J.X., Shih, C.K., Ren, D. & Zhao, Y.Y. (2011) New primitive fossil earwig from Daohugou, Inner Mongolia, China (Insecta: Dermaptera: Archidermaptera). Acta Geologica Sinica (English Edition), 85 (1), 75–80.
https://doi.org/10.1111/j.1755-6724.2011.00380.x