Rhyacophila diffidens Tsuda 1940
Type locality. Japan (Honshu).
Rhyacophila diffidens Tsuda 1940, 128-129, male, Honshu (Kyoto).
Tsuda 1942a, 247, Honshu (Kyoto).
Tani 1977, 198, male.
Tanida and Takemon 1993, 243, Honshu (Kyoto).
Kuranishi 1999, 189.
Morita 2001a, 219, Honshu (Mie).
Morita 2001b, 336, Honshu (Mie).
Hattori 2005, 428, 437, male, female.
Torii and Hattori 2006, 33, Honshu (Shizuoka).
Morita 2007a, 12, Honshu (Mie).
Morita 2009c, 7, Honshu (Shiga).
Aoyagi and Iwasaki 2010, 32, 33, 35, 36, Honshu (Osaka).
Kawase and Morita 2010, 35, Honshu (Shiga, Mie).
Moriya and Kubota 2012, 133, Honshu (Kanagawa).
Kuranishi 2016, 63.
Nojima 2017, 109, Honshu (Okayama).
Hattori 2018, 488, 497, male, female.
Shimura and Imasaka 2020, 13, 18, Kyushu (Fukuoka).
Higuchi 2024, 27, Honshu (Ishikawa).
Rhyacophila tsudai Ross 1956, 93, 119-120, male, Honshu (Kyoto). Synonymized by Kuranishi (2016).
Kuranishi 1999, 189.
Remarks. Hattori (2005) pointed out that R. tsudai is probably the same species as this species, and Kuranishi (2016) synonymized it with this species.