taxonID	type	description	language	source
03B987FEFFE1FFD25664FED0FB47FF4A.taxon	description	(Figures 1 (A), 2, 3, 4)	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE1FFD25664FED0FB47FF4A.taxon	type_taxon	Type species Protracheoniscus politus (Koch, 1840).	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE1FFD25664FED0FB47FF4A.taxon	materials_examined	Material examined Holotype. 1 male, CHINA: Sichuan Province, Aba Tibetan and Qiang Autonomous Songpan County, Zhenjiangguan Town (32.3279 ° N, 103.7221 ° E), 2,720 m, 4 March 2023, leg Jiang, no. 20230804201. Paratypes: 2 males, 5 females, nos. 20230804202 – 20230804204, same holotype.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE1FFD25664FED0FB47FF4A.taxon	diagnosis	Diagnosis Male pleopod 1 exopod apex deeply bilobed, outer lobe as long as inner one, twice as wide; bearing a seta and several clumps at apex. Pereopod 1 bearing brush of long trifid setae on carpus merus.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE1FFD25664FED0FB47FF4A.taxon	description	Description Body oval, convex, black brown colour with pale yellow muscle spots on antero-lateral corners of (Figure 1 (A )). Dorsal surface smooth, with long and tricorn-shaped scale-setae (Figure 3 (B )). Noduli on pereonites 1 – 4 farther from lateral margins than those on pereonites 5 – 7 (Figures 3 (A) and Cephalon with medial lobe slightly convex, lateral lobe well developed (Figure 3 (A )). Eye with ommatidia. Antennula of 3 articles; bearing a tuft of aesthetascs at apex (Figure 4 (A )). Antenna article of peduncle longer than flagellum; flagellum with distal article as long as proximal one (Figure Pereonite 1 with round postero-lateral corner, pereonites 2 – 3 with postero-lateral corners nearly angled, pereonites 4 – 7 with acute postero-lateral corners and directed backwards (Figures 1 (A) and Pereopod 1 densely covered with trifid setae on sternal margin of carpus and merus (Figure 3 (D )). 6 – 7 scattered with setae on sternal margin of merus and carpus (Figure 3 (E )). Left mandible with molar process carrying 3 teeth and lacinia mobilis with 2 teeth; lobe covered with 4 plumose penicils; pars molaris consisting of several plumose setae on a short common socket (( B )). Right mandible with molar process carrying 2 teeth and lacinia mobilis with straight edge; 10 – 15 between lacinia mobilis and molar process; pars molaris consisting of several plumose setae on common socket (Figure 4 (C )). First maxilla with outer branch bearing 4 + 4 teeth; inner branch with penicils and a triangular posterior point (Figure 4 (E )). Second maxilla distally bilobate and setose, inner wider than outer one (Figure 4 (D )); maxilliped endite rounded with 3 spurs, palp slender (Figure 4 (F Pleopods 1 – 5 exopods with monospiracular internal lungs (Figure 3 (G – K )). Male pleopod 1 exopod deeply bilobed, outer lobe as long as inner one, twice as wide; endopodite with broad basal part, towards apical tip, bearing single seta and several clumps at apex (Figure 3 (G )). Pleopod 2 exopod triangular, gently concave on outer margin; endopod longer than exopod, distal article thin, long (( H )). Pleopods 3 – 5 exopods bearing 1 line of setae on outer margin (Figure 3 (I – K )). Telson triangular twice as wide as long, distal apex surpassing protopod; uropodal exopod approximately twice as protopod (Figure 3 (A )). HISTORY	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE1FFD25664FED0FB47FF4A.taxon	distribution	Distribution China (Sichuan).	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE1FFD25664FED0FB47FF4A.taxon	discussion	Remarks This new species is similar to Protracheoniscus ehsani Kashani, P. golestanicus Kashani and Hamidnia P. gakalicus Kashani, Malekhosseini and Sadeghi, in the arrangements of noduli laterales and the flagellum with distal article as long as proximal one (Kashani et al. 2013, 2014, 2016). However, it distinguished by male pleopod 1 exopod deeply bilobed and endopod with several clumps at P. golestanicus, the male pleopod 1 exopod is gently bilobed and the apex of the endopod has a lobe bearing a row of a few small setae at the apex. In P. ehsani and P. gakalicus, the apex of male exopod is uncracked and the endopod has a line of small setae at the apex.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE7FFD8558AFB60FB75FC50.taxon	description	(Figures 1 (B), 2, 5, 6)	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE7FFD8558AFB60FB75FC50.taxon	materials_examined	Material examined Holotype. 1 male, CHINA: Xinjiang Uygur Autonomous Region, Ili Kazakh Autonomous Prefecture County (44.13 ° N, 81.40 ° E), 21 March 2022, leg. Sheng Du, no. 20220321002. Paratypes. 3 females 20220607101, 20220321010, 20220607101, same as holotype; 4 males nos. 20240831001, 20220321009, 20240831103, same as holotype except collected data.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE7FFD8558AFB60FB75FC50.taxon	diagnosis	Diagnosis Pereopods 5 – 6 propodus with line of curved setae, carpus covered with setae on rostral Antennula second article with several spines on its surface. Male pleopod 1 inner margin with 1 setae; endopod bearing a tuft of setae at apex.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE7FFD8558AFB60FB75FC50.taxon	description	Description Body elongated, convex, colour in alcohol black with white margin (Figure 1 (B )). Dorsal surface smooth long and tricorn-shaped scale-setae (Figure 5 (B )). Noduli laterales on pereonites 3 – 4 farther from margins than those on pereonites 1 – 2 and 5 – 7 (Figures 4 (A )) and 5 (G )). Cephalon with small medial HISTORY HISTORY (F) maxilliped; (G), position of noduli lateralis (holotype, male). Scale bars: 0.5 mm. Antenna of medium length, reaching pereonite 3; flagellum with 2 articles, proximal article approximately HISTORY backwards (Figures 1 B and 5 A). Pereopod 1 bearing brush of long bifurcated setae on its carpus merus (Figure 5 D). Pereopods 5 – 6 propodus with 1 line of curved setae, carpus rostral surface several setae (Figure 5 (E, )). Pereopod 7 ischium fringed with setae, sternal margin with shallow (Figure 5 (G )). Left mandible with molar process carrying 2 teeth and lacinia mobilis with straight edge; lobe setae with 4 plumose penicils (Figure 6 (B )). Right mandible with molar process carrying 3 teeth and mobilis with 2 teeth; lobe covered by setae with 5 plumose penicils; pars molaris consisting of plumose setae on a short common socket (Figure 6 (C )). First maxilla with outer branch bearing 4 + inner branch with 2 long penicils and a triangular posterior point (Figure 6 (E )). Second maxilla bilobate and setose (Figure 6 (D )); Maxilliped endite rectangular with 4 spurs, palp slender (Figure 6 (Pleopods 1 – 5 exopods with monospiracular internal lungs (Figure 5 (H – L )). Male pleopod 1 exopod outer margin slightly sinuous, bearing several setae near middle and apex, inner margin with 1 line endopod with broad basal part, narrowed towards apex, bearing a tuft of setae (Figure 5 (H )). exopod triangular, bearing 1 line of setae on outer margin; endopod longer than exopod, distal article long (Figure 5 (I )). Pleopods 3 – 5 exopods bearing 1 line of dense setae on outer margin (Figure 5 (J – L )) triangular, almost twice as wide as long, lateral margins slightly concave, posterior apex pointed; exopod 4.8 – 5.0 times as long as protopod (Figure 5 (A )). Size Males 18 – 28 mm, females 18 – 19 mm.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE7FFD8558AFB60FB75FC50.taxon	distribution	Distribution China (Xinjiang).	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFE7FFD8558AFB60FB75FC50.taxon	etymology	Etymology From the Latin curvatus = curved. The new species name refers to the pereopods 5 and 6 propodus line of curved setae. We suggest the Chinese common name ‘ 弯刺原气管虫’.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEAFFD85634FBB5FB13FD31.taxon	description	(Figures 1 (C), 2, 7, 8)	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEAFFD85634FBB5FB13FD31.taxon	materials_examined	Material examined 7 males, 3 females, CHINA: Xizang Autonomous Region, Zhada County, south-west of Duojidong (79.42 ° E), 4030 m, 27 July 2023, leg. Quanyu Ji, nos. 20230727001 – 20230727007.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEFFFDC5633FC95FD73FA2B.taxon	description	(Figures 1 (D – F), 2)	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEFFFDC5633FC95FD73FA2B.taxon	materials_examined	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. 20240330007 F – 20240330011 F; 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.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEFFFDC5633FC95FD73FA2B.taxon	distribution	Distribution China (Beijing, Hebei, Heilongjiang, Qinghai, Inner Mongolia, Jilin, Liaoning, Shanxi, Xinjiang, Xizang south-eastern Germany to central Asia.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEFFFDC5633FC95FD73FA2B.taxon	discussion	Remarks This species has phenotypic variations in the length of uropodal exopod, which varies from 2 to 5 long as protopod (Figure 1 (D, )).	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEEFFDC5595F9ECFC54FEF0.taxon	description	(Figures 1 (G), 9, 10)	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEEFFDC5641FDB4FCA3FDA9.taxon	description	(Figures 1 (F), 2)	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEEFFDC5641FDB4FCA3FDA9.taxon	materials_examined	Material examined 34 specimens, CHINA: Gansu Province, Zhangye, Gaotai County Yueyahu Park (39.3765 ° N, 1350 m, 27 September 2023, leg. Tianyun Chen, Jiabo Fan and Yiying Zhao, nos. 20230927205, 207 – 20230927239; 12 spms, Xizang Autonomous Region, Lhasa, Duilongdeqing District, Shiji (29.6304 ° N, 91.0743 ° E), 3610 m, 07 July 2021, leg. Chao Jiang, nos. 20210707001 – 202107070005 20210707007 – 20210707013.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEEFFDC5641FDB4FCA3FDA9.taxon	distribution	Distribution China (Gansu, Xinjiang, Xizang); Russia; Turkmenistan.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFEEFFDC5641FDB4FCA3FDA9.taxon	discussion	Remarks This species had previously been recorded in Chuguchak of Xingjiang and southern Gansu, China (1940). We here report this species from Chinese Xizang for the first time.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFF3FFC25654F956FA0AFF39.taxon	description	(Figures 1 (H), 11, 12)	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFF3FFC25654F956FA0AFF39.taxon	materials_examined	Material examined 10 specimens, CHINA: Sichuan Province, Aba Tibetan and Qiang Autonomous Prefecture, County, Zhangzha Town (33.2893 ° N, 103.8781 ° E), 2020 m, 03 August 2023, leg. Chao Jiang HISTORY	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFF3FFC25654F956FA0AFF39.taxon	description	Redescription Body elongated, convex, brown colour with yellow white muscle spots (Figure 1 (H )). Noduli on pereonites 1 – 4 farther from lateral margins than those on pereonites 5 – 7 (Figures 9 (A) (G )). Dorsum slightly granulated, with tricorn-shaped scale-setae (Figure 9 (B )). Cephalon with medial lobe, nearly quadrangular lateral lobe (Figure 9 (A )). Eye with 13 – 18 ommatidia. Antennula 3 articles; third article bearing a tuft of aesthetascs at apex (Figure 12 (A )). Antenna with fifth of peduncle longer than flagellum, flagellum with distal articles 1.3 times as long as proximal (Figure 9 (C )). Pereonite 1 with rounded postero-lateral corner, posterior margin nearly round, pereonites postero-lateral corners nearly right-angled, pereonites 3 – 7 with acute postero-lateral corners and backwards (Figures 1 (H) and 9 (A )). Pereopod 1 possesses a brush of long setae on its carpus and (Figure 9 (D )). Pereopod 6 merus and carpus fringed with setae (Figure 9 (E )). Pereopod 7 ischium margin with sparse setae, rostral surface with shallow depression (Figure 9 (F )). Left mandible with molar process carrying 3 teeth and lacinia mobilis with straight edge molaris consisting of several plumose setae on a short common socket (Figure 12 (B )). Right with molar process carrying 3 and lacinia mobilis with 2 teeth; pars molaris consisting of plumose setae on a short common socket (Figure 12 (C )). First maxilla with outer branch bearing teeth; inner branch with 2 long penicils and a triangular posterior point (Figure 12 (E )). Second distally bilobate and setose (Figure 12 (D )); Maxilliped endite rectangular with 4 spurs, palp (Figure 12 (F )). Pleopods 1 – 5 exopod with monospiracular internal lungs (Figure 9 (G – K )). Male pleopod 1 exopod oval deeply bilobed, apex of inner lobe bears 3 setae, 2 slightly concave near bottom; endopod with broad apex acute and bent outwards, bearing several setae (Figure 9 (G )). Pleopod 2 exopod nearly triangular, line of setae on the outer margin; endopod longer than exopod, distal article thin and long (Figure 9 (H )). 3 – 5 exopods bearing 1 line of setae on outer margin (Figure 9 (I – K )). Telson triangular, 1.8 times as long width, posterior apex pointed; uropodal exopod 3 times as long as protopod (Figure 9 (A )). Size Male 6 – 10 mm, female 11 – 14 mm.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFF3FFC25654F956FA0AFF39.taxon	distribution	Distribution China (Gansu, Sichuan).	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFF3FFC25654F956FA0AFF39.taxon	discussion	Remarks This species was originally recorded by Verhoeff (1940) and assigned to the subgenus Protracheoniscus (Mongoloniscus) Verhorff, 1917. We examined the specimens of P. (M.) bocki Verhorff, 1940 and characters are consistent with Mongoloniscus. Thus, we here transfer it to Mongoloniscus.	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
03B987FEFFF3FFC25654F956FA0AFF39.taxon	description	sp. n. – Male pleopod 1 endopodite without clumps at apex .................................................... ....................... P. 3. Pereopod 5 and 6 propodus with one line of curved setae ......................................................................................... P. curvatus sp. n. – Pereopod 5 and 6 propodus with one line of straight setae ....................................................................................	en	Zhong, Jing, Li, Weichun, Jiang, Chao (2025): The woodlouse genus Protracheoniscus (Isopoda: Agnaridae. Journal of Natural History 59 (37 - 40): 2361-2381, DOI: 10.1080/00222933.2025.2552253, URL: https://doi.org/10.1080/00222933.2025.2552253
