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 10.50826/bnmnszool.49.2_57 2434-091X Profenusa thomsoni (Konow, 1886) Japanese name: Tomuson-hamuguri-habachi Material examined . HOKKAIDO : 1 $, Iwamizawa, Kurisawa, Mt. Sankaku-yama, 43°05′N 141°58′E , 1. VII. 2022 , oviposited in Betula ermanii in captivity, H. Hara; 1$ (HH220801B), same data but coll. larva mining leaf of Betula ermanii , 1. VII. 2022 , mat. 6. VIII., em. 29. VIII. 2022 . Host plants . Betulaceae : Betula ermanii Cham. (new record), Betula platyphylla Sukaczev var. japonica (Miq.) H.Hara ( Shinohara and Hara, 2015 ) in Japan . For the host plants outside Japan , see Taeger et al. (1998) . Remarks . This sawfly is associated with various species of Betula .