Taxonomic Notes and New Distribution and Host Plant Records for Sawflies and Woodwasps (Hymenoptera, Symphyta) of Japan VIII Author Kumar, Deepthi S Author Sankar, Manimuthu M text Bulletin of the National Museum of Nature and Science. Series A, Zoology 2023 2023-05-22 49 2 57 74 http://dx.doi.org/10.4103/jpbs.jpbs_546_23 journal article 303592 10.50826/bnmnszool.49.2_57 90b4626e-63df-4241-a3cd-abe4d57452d2 2434-091X 13826588 Nematus japonicus (Takeuchi, 1921) Japanese name: Hiraashi-habachi Material examined . HONSHU: Tochigi Pref. : 3 $, Nakagawa, Yamata , coll. larvae on Alnus sieboldiana 30. IX. 2018 , mat. 2. X., em. 10. IX. 2019 , S. Ibuki ; 3$, same data but mat. 3. X., em. 14. IX. 2019 . Host plants . Betulaceae : Alnus firma Siebold et Zucc., A. hirsuta Turcz. var. hirsuta , A. japonica (Thunb.) Steud. , A. inokumae Murai et Kusaka , A. pendula Matsum. ( Okutani, 1967 ); A. sieboldiana Matsum. (new record). Remarks . We here record A. sieboldiana as a new host plant. This sawfly is associated with various species of Alnus .