Taenionema japonica ( Matsumura 1904 )

Shimizu, Takao, 2016, Dates, Validity And Spelling Of Japanese Stoneflies (Plecoptera) Described By Shonen Matsumura, Illiesia 12 (6), pp. 27-30 : 27-28

Taenionema japonica ( Matsumura 1904)

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org: TaxonName:479455

Lectotype: A male “April 28, Maruyama, Sapporo, Hokkaido” in The Hokkaido University Museum, Sapporo. The collected year and the collector’s name are not printed.

Nemoura japonica Matsumura 1904 . p. 157 & fig 4 in plate 10. — Matsumura 1907. p. 52 & plate 42; Matsumura 1931a. p. 1425 with figure.

Nemoura misnoma Claassen 1936, p. 623 . — Claassen 1940, p. 59; Kohno 1964, p. 32; Kawai 1960, p. 134; Illies, 1966, p. 469; Kawai 1967, p. 32; Kawai 1976, p. 39, treated as nomen nudum.

Nemoura misnosa [sic], Shimizu 1997a, p. 532, found syn. of Rhabdiopteryx japonica Okamoto 1922 .

This species was treated as a junior homonym of Nemoura japonica Needham 1905 and renamed as Nemoura misnoma by Claassen (1936). In Matsumura (1904) the date of publication was specified as 10 September 1904 and included a description and illustration of the characters. Shimizu (1997a) found that this species was synonymous with Taenionema japonicum ( Okamoto 1922) . Shimizu (1997a) attempted to designate the lectotype of Nemoura misnoma with the syntype of Nemoura japonica Matsumura in his collection of Hokkaido University, and the lectotype is now redesignated for Nemoura japonica Matsumura 1904 .

According to the rule of priority in zoological nomenclature, both Nemoura japonica Needham 1905 and Nemoura misnoma Claassen 1936 must be rejected, as a primary homonym and as an unnecessary replacement name, respectively. Nemoura japonica Matsumura, 1904 is a senior synonym of Rhabdiopteryx japonica Okamoto 1922 and has since been transferred to the genus Taenionema . Taenionema japonicum ( Matsumura 1904) is the valid name of the species, and T. japonicum ( Okamoto 1922) is its secondary junior homonym.

While the late Dr. Hanjiro Okamoto (1882-1960) studied under the late Prof. Shonen Matsumura, Okamoto (1922) unfortunately ignored the description of the present species. It seemed to be thought that Matsumura’s works were scientifically invalid, except his work in 1911, in those days in Japan.