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Type: Article
Published: 2020-06-30
Page range: 309–316
Abstract views: 124
PDF downloaded: 1

Discrimination of species of Hapsomela Poinar & Brown (Coleoptera: Staphylinidae: Scydmaeninae) in mid-Cretaceous Burmese amber

Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, China
Coleoptera Staphylinidae Scydmaeninae taxonomy Hapsomela mid-Cretaceous Burmese amber new species


A study of fourteen specimens of the extinct genus Hapsomela Poinar & Brown from Burmese amber revealed three morphospecies, of which two are described as new: Hapsomela minor sp. nov. and H. tibialis sp. nov. The holotype of H. burmitis Poinar & Brown, originally interpreted as a female, is most likely a male. The projections/spines of the pro- and metatibiae are recognized as male sexual characters. The apical parts of the aedeagi of H. burmitis and H. tibialis are illustrated. Six specimens lacking modifications on the legs are listed as unassociated females.


  1. Chatzimanolis, S., Engel, M.S., Newton, A.F. & Grimaldi, D.A. (2010) New ant-like stone beetles in mid-Cretaceous amber from Myanmar (Coleoptera: Staphylinidae: Scydmaeninae). Cretaceous Research, 31, 77–84.

    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.

    Jałoszyński, P. (2014) Phylogeny of a new supertribe Cephenniitae with generic review of Eutheiini and description of a new tribe Marcepaniini (Coleoptera: Staphylinidae: Scydmaeninae). Systematic Entomology, 39, 159–189.

    Mao, Y.Y., Liang, K., Su, Y.T., Li, J.G., Rao, X., Zhang, H., Xia, F.X., Fu, Y.Z., Cai, C.Y. & Huang, D.Y. (2018) Various amberground marine animals on Burmese amber with discussions on its age. Palaeoentomology, 1, 91–103.

    Poinar, G. & Brown, A.E. (2004) A new subfamily of Cretaceous antlike stone beetles (Coleoptera: Scydmaenidae: Hapsomelinae) with an extra leg segment. Proceedings of the Entomological Society of Washington, 106, 789–796.

    Poinar, G. & Poinar, R. (2007) What bugged the dinosaurs? Princeton University Press, Princeton, xi + 282 pp.

    Yin, Z.W., Cai, C.Y. & Huang, D.Y. (2018) Last major gap in scydmaenine evolution filled (Coleoptera: Staphylinidae). Cretaceous Research, 84, 62–68.