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日本初記録の 2 種を含む南日本産ヒラアワツブガニ属およびケブカアワツブガニ属(十脚目:短尾下目:オウギガニ科)

前之園唯史

Abstract / Introduction / Summary:

Five xanthid species, Forestiana granulata (Krauss, 1843), F. scabra (Odhner, 1925), Gaillardiellus al- phonsi (Nobili, 1905), G. orientalis (Odhner, 1925) and G. rueppellii (Krauss, 1843), are reported based on specimens collected from the southern part of Ky- ushu and the Ryukyu Islands, of which F. scabra and G. alphonsi represent new records for the fauna of Ja- pan. This study pointed out that necessity of re-evalua- tion of Aegle rugata White, 1848 and Actaea pilosa Stimpson, 1858, which are regarded to be the same species as G. rueppellii, considering that the speci- mens identified as G. rueppellii in this study contained two morphotypes that could be distinguished by mor- phological features. Furthermore, this study agreed with the opinion made by existing studies that G. al- phonsi and G. superciliaris (Odhner, 1925) are the same species, as well as indicating that detailed com- parison between F. lucius Ng, 2015 and Actaea bocki Odhner, 1925, and G. bathus Davie, 1997 and G. holthuisi Takeda and Komatsu, 2010 are necessary.