Protracheoniscus major (Dollfus)

Zhong, Jing, Li, Weichun & Jiang, Chao, 2025, The woodlouse genus Protracheoniscus (Isopoda: Agnaridae, Journal of Natural History 59 (37 - 40), pp. 2361-2381 : 2372-2373

Protracheoniscus major (Dollfus)

( Figures 1 (D–F), 2)

Metoponorthus major Dollfus in Dyduch 1903: 64.

Protracheoniscus asiaticus : Strouhal 1929: 7, figs. 1–8; Verhoeff 1930: 108, figs. 1–3.

Protracheoniscus major : Schmalfuss 2003: 219; Chen 2000: 259; Chen 2009: 523, fig. 321.

Material examined

7 specimens, CHINA: Gansu Province, Tanchang County, Mingjiang Avenue, Guan’e Bridge ( 104.3896°E), 1740 m, 30 March 2024, leg . Yuan Xiong and Yifei Yu , nos . 20240330007F–20240330011F; Gaotai County, Yueyahu Park ( 39.3765°N, 99.7985°E), 1350 m, 27 September 2023, leg . Tianyun Chen ,

and Yiying Zhao , nos . 20230927206, 20230927301–20230927304; 3 spms, Lanzhou, Qilihe District, National Forest Park ( 35.9368°N, 103.8691°E), 1880 m, 22 September 2023, leg . Tianyun Chen , Jiabo Yiying Zhao, nos . 20230922201–20230922203; 6 spms, Heilongjiang Province, Harbin, Xiangfang Xiangfang Avenue ( 45.7239°N, 126.6785°E), 30 December 2022, leg . Junjie Zong , no . 20221230001; Jilin Province, Ji’an, Koguryo Archaeological Site Park ( 41.1210°N, 126.1845°E), 210 m, 12 September

Chao Jiang , no . 20200912001; 3 spms, Liaoning Province, Xinbin Manchu Autonomous County, Yongling ( 41.7193°N, 124.7979°E), 310 m, 07 September 2021, leg . Chao Jiang , nos . 20210907034–20210907036; Chaoyang, Longcheng shangzhi Park ( 41.5891°N, 120.4302°E), 180 m, 07 September 2021, leg . Chao no . 20210907004; 1 spm, Huanren Manchu Autonomous County, Huanren Town, Zhangyue Park ( 125.348°E), 270 m, 04 September 2021, leg . Chao Jiang , no . 20210904035; 1 spm, Qinghai Province,

Zang Autonomous Prefecture, Jianzha County, Binhe Park ( 35.9420°N, 102.0456°E), 2020 m, 21 September leg . Tianyun Chen, Jiabo Fan and Yiying Zhao, no . 20230921001; 7 spms, Inner Mongolia Autonomous Horqin District, Tielu Street, Tongliao Forest Park ( 43.6043°N, 122.2958°E), 180 m, 05 July 2024,leg . Yuan

Yifei Yu, nos. 20240705001–20240705005; 24 spms, Ningxia Hui Autonomous Region, Yinchuan, Xixia Gunzhongkuo Scenic area ( 38.5662°N, 106.0354°E), 1160 m, 24 September 2023, leg . Tianyun Chen, Jiabo Yiying Zhao , nos . 20230924201–20230924224;7 spms, Shanxi Province, Jinzhong, Taigu Service area ( 112.7775°E), 860 m, 02 September 2023, leg . Tianyun Chen, Jiabo Fan and Yuan Xiong 20231102401–20231102407; 2 spms, Xinjiang Autonomous Region, Tacheng , Emin County ,

HISTORY

3060 m, 10 July 2021, leg. Chao Jiang, nos. 202107100027–20210710032;9 spms, Gongga County,Jiazhulin ( 29.2885°N, 90.8958°E), 3560 m, 10 July 2021, leg. Chao Jiang, nos. 20210710019–20210710026; 10 Shannan, Naidong district, Shannan Hotel ( 29.2379°N, 91.7705°E), 3550 m, 05 July 2021, leg. Chao Jiang 20210705010–20210705019; 14 spms, Jiacha County, Anrao Town ( 29.142°N, 92.583°E), 3240 m, 08 July

Chao Jiang, nos. 20210708003–20210708012.

Distribution

China ( Beijing, Hebei, Heilongjiang, Qinghai, Inner Mongolia, Jilin, Liaoning, Shanxi, Xinjiang, Xizang south-eastern Germany to central Asia.

Remarks

This species has phenotypic variations in the length of uropodal exopod, which varies from 2 to 5

long as protopod ( Figure 1 (D,)).

Figures

Figure 1. Habitus of Protracheoniscus species. (A) P. flavus Jiang and Li, sp. n., holotype; (B) P. curvatus Jiang and holotype; (C) P. nivalis Verhoeff, 1936, male; (D–E) P. major (Dollfus, 1903), male; (F) P. asiaticus (Uljanin, 1875), M. hummeli (Verhoeff, 1940), comb. n., male. (H) M. bocki (Verhoeff, 1940), comb. n., male. Scale bars: 1 mm.