Abstract
The larvae of the following 11 Japanese species of the Diprionidae (Hymenoptera) are figured and briefly described: Gilpinia albiclavata Hara, 2015, G. amamiana Okutani, 1965, G. hakonensis (Matsumura, 1912), G. kojimai Hara & Shinohara, 2015, G. nigra Okutani, 1958, Microdiprion hakusanus Togashi, 1970, Monoctenus nipponicus Takeuchi, 1940, Nesodiprion flavipes Hara & Smith, 2015, N. kojimai Hara & Smith, 2015, N. shinoharai Togashi, 1998 and N. tsugae Togashi, 2001. The larvae of 10 of these species are described for the first time. New host plant records are given for Gilpinia amamiana, G. hakonensis, G. nigra and Nesodiprion kojimai. Notes on the oviposition and larval habits of these 11 species are also given.
