We examined stomatopods specimens collected by field works, as well as those deposited in the museum to clarify the stomatopod fauna off Yamaguchi Prefecture in the Sea of Japan, we examined not only specimens by field works but also those deposited in the museums. The following 11 species were found: Odontodactylus japonicus (de Haan, 1844), Anchisquilla fasciata (de Haan, 1844), Harpiosquilla harpax (de Haan, 1844), Lenisquilla lata (Brooks, 1886), Levisquilla inermis (Manning, 1965), Lophosquilla costata (de Haan, 1844), Oratosquilla oratoria (de Haan, 1844), Quollastria fossulata (Moosa, 1986), Q. gonypetes (Kemp, 1911) and Squilloides leptosquilla (Brooks, 1886). This occurrence of Q. fossulata is the first record from Japanese waters.

Faughnia serenei Moosa, 1982, was thought to be distributed in Japan, but there have been no records based on specimens. In this study, I confirmed the distribution of this species in Japan using specimens in the collection of the Kitakyushu Museum of Natural History and Human History and a newly collected specimen from Miyazaki Prefecture. Partial sequences of COI and 16S rDNA of the mitochondrial DNA of the latter specimen are also reported.

キバネツノトンボLibelloides ramburi (M'Lachlan, 1875)は本州と九州に分布するとされている．本研究では，本種の九州からの分布記録について文献調査と聞き取り調査により検証し，基礎情報の整理を行った．文献調査では標本情報に基づく分布記録を見つけることはできなかった．九州各県の担当部署と主要大学・博物館を対象に行った聞き取り調査では，分布記録，標本共に存在を確認できなかった．文献調査と聞き取り調査には限界があるため，現段階では九州の分布記録を否定することはできないものの，キバネツノトンボの九州の分布記録は疑わしいと判断される．