Abstract
A new species of the ‘flat-backed’ millipede family Trichopolydesmidae, Monstrodesmus grimaldii sp. nov., is described from the mid-Cretaceous Burmese amber. Detailed morphological characters are provided on the basis of three well-preserved adults (two males and one female), one male juvenile, and seven additional specimens, using confocal laser scanning microscopy (CLSM) and microcomputer tomography (μCT) with computer-aided 3D-reconstructions. The new species can be placed most likely in the extant genus Monstrodesmus by presenting great similarities to living species.
References
- Azar, D., Perrichot, V., Néraudeau, D. & Nel, A. (2003) New psychodid flies from the Cretaceous ambers of Lebanon and France, with a discussion about Eophlebotomus connectens Cockerell, 1920 (Diptera, Psychodidae). Annals of the Entomological Society of America, 96, 117–127. https://doi.org/10.1603/0013-8746(2003)096[0117:NPFTCA]2.0.CO;2
- 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
- Enghoff, H., Golovatch, S.I., Short, M., Stoev, O. & Wesener, T. (2015) Diplopoda—taxonomic overview. In: Minelli, A. (Ed.), Treatise on Zoology—Anatomy, taxonomy, biology. The Myriapoda. Volume 2. Brill, Leiden and Boston, pp. 363–453. https://doi.org/10.1163/9789004188273_017
- Fu, Y.Z., Li, Y.D., Su, Y.T., Cai, C.Y. & Huang, D.Y. (2021) Application of confocal laser scanning microscopy to the study of amber bioinclusions. Palaeoentomology, 4 (3), 266–278. https://doi.org/10.11646/palaeoentomology.4.3.14
- Golovatch, S.I., Geoffroy, J.-J. & VandenSpiegel, D. (2014) Review of the millipede family Trichopolydesmidae in the Oriental realm (Diplopoda, Polydesmida), with descriptions of new genera and species. ZooKeys, 414, 19–65. https://doi.org/10.3897/zookeys.414.7671
- Grimaldi, D.A., Engel, M.S. & Nascimbene, P.C. (2002) Fossiliferous Cretaceous amber from Myanmar (Burma): its rediscovery, biotic diversity, and paleontological significance. American Museum Novitates, 3361, 1–71. https://doi.org/10.1206/0003-0082(2002)361<0001:FCAFMB>2.0.CO;2
- Mao, Y.Y., Liang, K., Su, Y.T., Li, J.G., Rao, X., Zhang, H., Xia, F.Y., Fu, Y.Z., Cai, C.Y. & Huang, D.Y. (2018) Various amberground marine animals on Burmese amber with discussions on its age. Palaeoentomology, 1 (1), 91–103. https://doi.org/10.11646/palaeoentomology.1.1.11
- Ross, A.J. (2019) Burmese (Myanmar) amber checklist and bibliography 2018. Palaeoentomology, 2 (1), 22–84. https://doi.org/10.11646/palaeoentomology.2.1.5
- Ross, A.J. (2021) Supplement to the Burmese (Myanmar) amber checklist and bibliography, 2020. Palaeoentomology, 4 (1), 57–76. https://doi.org/10.11646/palaeoentomology.4.1.11
- Ross, A.J., Mellish, C., York, P. & Crighton, B. (2010) Burmese amber. In: Penney, D. (Ed.), Biodiversity of fossils in amber from the major world deposits. Siri Scientific Press, Manchester, pp. 208–235.
- 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
- Sierwald, P. & Spelda, J. (2021) MilliBase. Trichopolydesmidae Verhoeff, 1910. Available from: http://www.millibase.org/aphia.php?p=taxdetails&id=888798 (Accessed 2022-11-30)
- Wesener, T. & Moritz, L. (2018) Checklist of the Myriapoda in Cretaceous Burmese amber and a correction of the Myriapoda identified by Zhang (2017). Check List, 14 (6), 1131–1140. https://doi.org/10.15560/14.6.1131
- Zherikhin, V.V. & Ross, A.J. (2000) A review of the history, geology and age of Burmese amber (Burmite). Bulletin of the Natural History Museum, London (Geology), 56, 3–10.