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Issue: Vol. 1762 No. 1: 5 May. 2008
Type: Article
Published: 2008-05-05
DOI: 10.11646/zootaxa.1762.1.3
Page range: 53–62
Abstract views: 25
PDF downloaded: 1

A water-skiing chresmodid from the Middle Jurassic in Daohugou, Inner Mongolia, China (Polyneoptera: Orthopterida)

State Key Laboratory of Biocontrol and Institute of Entomology, Sun Yat-Sen University, Guangzhou 510275, China
College of Life Sciences, Capital Normal University, Beijing 100037, China
State Key Laboratory of Biocontrol and Institute of Entomology, Sun Yat-Sen University, Guangzhou 510275, China
College of Life Sciences, Capital Normal University, Beijing 100037, China
Orthoptera fossil insect Chresmodidae water-skiing Middle Jurassic Jiulongshan Formation China

Abstract

A new genus with a new species (Jurachresmoda gaskelli gen. et sp. nov.) of Chresmodidae (Insecta: Polyneoptera: Orthopterida) is described and illustrated. They were collected from the Middle Jurassic in Daohugou, Jiulongshan Formation, Inner Mongolia (Nei Mongol Autonomous Region), China. J. gaskelli have fringing hairs on tarsi and a part of tibiae of mid legs. These hairs and leg structures were probably associated with its water-skiing locomotion on freshwater. A high number of tarsomeres, e. g. ultra-articulated tarsi as reported in other species of Chresmodidae, are also found for this new species. But, these true tarsi are mixed with some wrinkles resulted from dehydration and compression during fossilization process. Nymphs of the new species are also described. This is the first time that long and segmented cerci of the nymph are described in Chresmodidae.

References

  1. Baudoin, R. (1980) Sur les Gerris des miroirs d’eau actuels et les Chresmoda des lagunes post-recifales portlandiennes de Solnhofen. Annales des Sciences Naturelles, Zoologie, Paris, 2, 111–116.

    Gao, K.Q. & Ren, D. (2006) Radiometric dating of Ignimbrite from Inner Mongolia provides no indication of a Post–Middle Jurassic Age for the Daohugou Bed. Acta Geologica Sinica, 80, 41–45.

    Grimaldi, D. & Engel, M.S. (2005) Evolution of Insects. Cambridge University Press, New York, USA, pp. 188–194.

    Huang, J., Sinitshenkova, N., Ren, D. & Shih, C.K. (2007) New fossil mayflies from Daohugou, Inner Mongolia, China. Annales Zoologici (Warszawa), 57(2), 221–225.

    Liu, Y., Ren, D., Sinitshenkova, N.D. & Shih, C.K. (2007) The oldest known record of Taeniopterygidae in the Middle Jurassic of Daohugou, Inner Mongolia, China (Insecta: Plecoptera). Zootaxa, 1521, 1–8.

    Martínez-Delclós, X. (1989) Chresmoda aquatica n. sp. insecto Chresmodidae del Cretácico inferior de la Sierra del Montsec (Lleida, España). Revista Espanola de Paleontologia, 4, 67–74.

    Nel, A., Azar D., Martínez-Delclós, X. & Makhoul, E. (2004) A new Upper Cretaceous species of Chresmoda from Lebanon– a latest representative of Chresmodidae (Insecta: Polyneoptera inc. sed.): first record of homeotic mutations in the fossil record of insects. European Journal of Entomology, 101 (1), 145–151.

    Nel, A., Martínez-Delclós, X., Béthoux, O. & Azar, D. (2005) Chresmoda, an enigmatic Mesozoic insect that is finally placed. Fossils X3 programme and abstract, pp. 48.

    Ponomarenko, A.G. (1986) Scarabaeiformes incertae sedis. In: Rasnitsyn, A.P. (ed.).Nasekomye v rannemelovykh ekosistemakh Zapadonoy Mongolii (Insects in the Early Cretaceous Ecosystems of the West Mongolia). Trudy Sovmestnoy Sovetsko-Mongol’skoy Paleontol. Expeditsii Nauka, Moscow, 28, 110–112 (in Russian).

    Rasnitsyn, A.P. & Quicke, D.L.J. (2002) History of Insects, Kluwer Academic Publishers, Hingham, MA, USA, pp, 254–264.

    Ren, D. & Engel, M.S. (2007) A split-footed lacewing and two epiosmylines from the Jurassic of China (Neuroptera). Annales Zoologici (Warszawa), 57(2), 211–219.

    Wang, Y., Ren, D. & Shih C.K. (2007) Discovery of middle Jurassic Palaeontinids from Inner Mongolia, China (Homoptera: Palaeontinidae), Progress in Natural Science, 17, 112–116.

    Yao, Y., Cai, W. & Ren, D. (2007) The oldest known fossil plant bug (Hemiptera: Miridae), from Middle Jurassic of Inner Mongolia, China. Zootaxa, 1442, 37–41.

    Zhang, X.W., Ren, D. Pang, H. & Shih C.K. (2008) A new genus and species of Chresmodidae (Insecta: Gryllones) from Upper Jurassic-Lower Cretaceous of Yixian Formation, Inner Mongolia, China, Zootaxa, 1702, 26–40.