EN
Ten genera of the subfamily Doryctinae are recorded from Japan for the first time: Caenophanes Foerster, 1862, Guaygata Marsh, 1993, Leluthia Cameron, 1887, Mimipodoryctes Belokobylskij, 2001, Neurocrassus Šnoflak, 1945, Parallorhogas Marsh, 1993, Platyspathius Viereck, 1911, Polystenus Foerster, 1862, Rhacontsira Belokobylskij, 1998, and Spathiomorpha Tobias, 1976. Twenty five new species and one new subspecies are described from the Japanese islands: Caenophanes confusus sp. nov., C. infuscatus sp. nov., C. kyushuensis sp. nov., C. pumilio sp. nov., C. rasilis sp. nov., C. yakuensis sp. nov., Guaygata mayaensis sp. nov., Leluthia (Leluthia) honshuensis sp. nov., L. (L.) nagoyae sp. nov., L. (Euhecabolodes) postfurcalis sp. nov., Mimipodoryctes rokkoensis sp. nov., Neurocrassus hinoematus sp. nov., N. hypodoryctoides sp. nov. N. ibarakius sp. nov., N. miyanourus sp. nov., N. sanageensis sp. nov., Parallorhogas ambiguus sp. nov., P. boninus sp. nov., P. icarus sp. nov., P. maeseensis sp. nov., P. pacificus sp. nov., P. pacificus micronesianus subsp. nov., Rhacontsira insulicola sp. nov., R. toyota sp. nov., R. yamagishii sp. nov., Spathiomorpha japonica sp. nov. Six species are recorded for the first time for Japan: Guaygata mariae (Belokobylskij, 1993), Neurocrassus rarus (Belokobylskij, 1982), N. tentorialis Belokobylskij, 1993, Platyspathius ornatulus (Enderlein, 1912), Polystenus rugosus Foerster, 1862, Rhacontsira heterospiloides (Belokobylskij, 1988). Two new synonyms are suggested: Rhyssalus rubriceps Cameron, 1909 = Mimipodoryctes robustus Belokobylskij, 2001 (syn. nov.); Spathiohormius ornatulus Enderlein, 1912 = Spathius dinoderi Gahan, 1925 (syn. nov.). The following new combinations are given: Guaygata mariae (Belokobylskij, 1993), comb, nov., Polystenus remus (Nixon, 1943), comb, nov., Spathiostenus tenuis (Nixon, 1943), comb. nov. Lectotypes of Spathiohormius ornatulus Enderlein and Rhyssalus rubriceps Cameron are designated for stability of nomenclature. Keys to species of the genera Caenophanes Foerster, Guaygata Marsh, Leluthia Cameron, Mimipodoryctes Belokobylskij, Neurocrassus Šnoflak, Parallorhogas Marsh, Rhacontsira Belokobylskij, and Spathiomorpha Tobias are provided.