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  • Stephanogaster sp.




    Parasitic wasp

    Kingdom: Animalia
    Phylum: Arthropoda Latreille 1829
    Class: Insecta Linnaeus 1758
    Order: Hymenoptera Linnaeus, 1758
    Family: Ephialtitidae Handlirsch, 1906
    Genus: Stephanogaster
    Species: Stephanogaster sp.

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Jurassic
    Sub Period: None
    Epoch: Middle
    International Age: Callovian to Oxfordian


    Jiulongshan Formation
    Daohugou Bed


    Acquired by: Purchase/Trade


    Daohugou (Village)
    Ningcheng (County)
    Inner Mongolia (Province)


    Taxonomy from Li et al., 2019.
    Enended diagnosis for the genus from Li et. al., 2019, p. 569: "Antenna filiform with over 20 antennomeres. Forewing venation complete, 1r-rs complete (rudimentary) or lost, 1-Rs sub-vertical to Rs, base of 2rm nearly at level of pterostigma base, 1cu-a interstitial or slightly postfurcal. Hindwing with 1-Rs longer than r-m, 1-M slightly bent. Metasoma widest distal of its middle, with first metasomal segment wide basally and either columnar or truncated conical in shape. Ovipositor long, usually longer than metasoma or whole body."

    Line drawing of the forewing of Stephanogaster ningchengensis Ding, Zheng, Zhang & Zhang, 2013; from Li et al., 2019, p. 577.

    Scale bar 1 mm.

    RASNITSYN, A.P. & ZHANG, H.C., (2010). Early evolution of Apocrita (Insecta, Hymenoptera) as indicated by new findings in the Middle Jurassic of Daohugou, Northeast China. Acta Geologica Sinica (English Edition) 84, 834–873.

    DING, M., ZHENG, D.R., ZHANG, Q. & ZHANG, H.C. (2013). A new species of Ephialtitidae (Insecta: Hymenoptera: Stephanoidea) from the Middle Jurassic of Inner Mongolia, China. Acta Palaeontologica Sinica 52, 51–56. (Chinese with English abstract).

    Li, L., Shih, C., Li, D., & Ren, D. (2019). New fossil species of Ephialtitidae and Baissidae (Hymenoptera, Apocrita) from the mid-Mesozoic of northeastern China. Alcheringa: An Australasian Journal of Palaeontology, 43(4), 568–579. https://doi.org/10.1080/03115518.2019.1601767

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