Xystodesmus pallidus (Verhoeff, 1937) comb. nov.

Figs 11 A – E, 12 A – D, 13 A, B

Koreoaria pallida Verhoeff, 1937: South Korea (Verhoeff 1937: 319–320, fig. 8)

Koreoaria pallida: Tanabe and Shinohara 1996: 1487 (“ species possibly belonging to Xystodesmus ”)

Koreoaria pallida: Tanabe and Shinohara 1996: 1487

Koreoaria pallida: Marek et al. 2014: 71

Type material examined.

Holotype: • male (ZSMC, Reg. Nr. A 20060019): in 2 fragments, gonopods and legs are on separate slide (ZSMC, Reg. Nr. A 20033594) (Fig. 11) . Paratypes: • 4 females (ZSMC, Reg. Nr. A 20060019) .

Description of holotype.

Male total body length ~ 21 mm; collum length 1.5 mm, width 3.3 mm; 10 th segment width 4.2 mm, metazonal length 1.1 mm. Paranotal processes from segment 6 onwards projected caudad, anterior margin broadly rounded, male 2 nd leg pair with long, slender coxal projection, 3 rd with nothing, 4 th and 5 th with small, triangular coxal processes; postgonopodal prefemoral spines strong and long, half as long as length of prefemur, sternal plate broad, coxal distance 1.2 mm, anterior-posterior sterna fused.

Male gonopods (Figs 11 A – C, 12 A, B) fits well to the original description and drawing.

Female paratypes. Total body length 22–26 mm; collum length 1.6–1.8 mm, width 3.5–3.8 mm; 10 th segment paranotal width 4.4–5.1 mm, metazonal length 1.1–1.2 mm, coxal distance 1.1–1.5 mm. Gnathochilarium (Figs 12 C, 13 A) and cyphopods (Fig. 13 B) are here illustrated for the first time.

Colouration (Fig. 11 D – E). Type material in alcohol completely faded. Verhoeff (1937: 319), however, provided a description which is in total agreement of Xystodesmus characters: “ braune Metatergite und rötlichgelben Längswisch auf den Seitenflügeln ” [metatergites brown, and paranota with reddish yellow longitudinal spots].

Remarks.

The flat gonopodal prefemoral process (pfp, Fig. 12 A, B) was called by Verhoeff (1937: 317, fig. 8) as “ abgespaltener Tibiotarsus ”, and in the generic comparison of Koreoaria he had set it against the prefemoral process of Pachydesmus Cook, 1895 . According to Verhoeff, the longer process made of two parts, the “ praefemorofemur ” and its disjunct ending, the solenomere (Verhoeff 1937: fig. 8, sl). In our opinion this is a misunderstanding, as the longer process corresponds to the acropodite (Fig. 12 A, B, a), and the other one is the prefemoral process (correctly interpreted by Takakuwa 1942 b for Koreoaria amoena).