Kamimuria simplex (Chu, 1929)

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org:TaxonName:7456

(Figs. 1–4)

Perla simplex: Chu, 1929: 88; Claassen, 1940: 145.

Kamimuria simplex: Wu, 1938: 200; Du, Sivec & He, 1999: 61; Sivec & Stark, 2008: 137; Stark & Sivec, 2013: 117, nomen dubium; Yang & Li, 2018: 31.

Supplementary description: Male coloration mostly dark brown to black (Fig. 1A); area between eyes to ocellar triangle dark and ventrally most parts of head and thorax yellowish (Fig. 1A–B). Male metasternum and sterna 3–7 with setal brushes (Fig. 1A). Terga 1–7 unmodified. Sensilla basiconica patches occur both as a round dark spot present on posterior tergum 8 and a median longitudinal dark area of tergum 9 that is much denser (Fig. 2A). Hemitergal lobes are slender, hooklike, extending backward to the posterior margin of tergum 9 (Fig. 2A). Aedeagus membranous; basal half with paired patches of large spines mediolaterally on the swellings; distal half with two paired swellings (Fig. 2B–C), the apical pair are larger than the basal pair; apex with dense fine spines ventrally, and a pair of ventrolateral patches of thicker and long spines arranged in “C” shaped semicircles (Fig. 2D).

Female coloration similar to male (Fig. 3A–B). Abdomen brown; sterna 6–8 slightly sclerotized medially. Subgenital plate with a pair of posterolateral lobes of which apex rounded and adjacent to each other; the notch between the lobes “Ω” shaped, darker than other parts of the plate (Fig. 4).

Nymph: Unknown.

Egg: Unknown.

Material examined: 12 males, 2 females, China: Fujian Province, Wuyishan City, Mount Wuyi, on the way from Sangang to Yiliping, Tongmu Bridge, 240 m, 27.746808 N, 117.688634 E, 2021-V-15, leg. Huo Qing-Bo, Zhao Meng-Yuan .

Distribution: China (Zhejiang, Fujian).

Remarks: In the area close to the type locality, our specimens ar e the onl y known Kamimuria with black body color and bright yellow anterior margin of wings, which best match the original description of Chu (1929) and Wu (1938). The species was considered as nomen dubium by Sivec & Stark (2008) and Stark & Sivec (2013) but listed as valid by Yang & Li (2018). We agree with the latter opinion since this distinctive species can be recognized on the basis of its original description.