Holotype : ♀ (ZJ-TO-20180701), Qingliangfeng National Nature Reserve, Lin’an, Zhejiang Province, P. R. China (30°6'44"N, 118°53'36"E, 940 m a.s.l.), collected by Xinyao Gu, 31-VII-2018. Paratype: 2 ♀♀ (ZJ-TO-20180702, ZJ-TO-20180703), same data as holotype.

Idiosoma elliptical; dorsal plate 4+1; infracapitular bay U-shaped; E₄ at the same level as the 6^th pair of acetabula; gnathosoma with a short rostrum, the lateral view of gnathosoma regular triangle-like.

Female (n = 3): Idiosoma elliptical, L 847 (774–887), W 586 (586–648), L/W ratio 1.4 (1.3–1.4). Dorsal plate 4+1 (Fig. 1A), dorsal shield L 755 (682–770), W 530 (530–585), dorsal plate L 694 (620–709), frontal platelets L 158 (152–170), W 83 (69–90), shoulder platelets L 169 (169–196), W 99 (81–99). Infracapitular bay U-shaped, depth 126 (126–150); only the tip of Cx-I exceeding to the anterior margin of idiosoma; Cx-I L 270 (230–273), mL 123 (102–123), Cx-II+III mL 33 (19–33); Gf pentagonal, L 220 (180–220), W 168 (168–192), L/W ratio 1.3 (1.1–1.3), distance between Gf and Ap 220 (156–220); E₄ at the same level as the 6^th pair of acetabula; Ap away from the line of primary sclerotization, on the same level of V₁ and anterior to V₂ (Fig. 1B). Gnathosoma (Fig. 1D): the lateral view of gnathosoma regular triangle-like; vL 231 (200–242), dL 151 (128–159), chelicera bs L 214 (202–251), claw L 41 (41–43). P-1 with one dorsal seta; P-2 with one dorsal and one ventral setae at the base of the ventral extension; P-3 with three dorsal setae and one long seta at the base of the ventral extension; P-4 with one dorsal seta in proximal half, two mediodistal setae and two ventral setae at the slight ventral extension (Fig. 1C). dL of palp segments: P-1, 27 (26–30); P-2, 68 (65–68); P-3, 41 (37–48); P-4, 62 (59–72); P-5, 20 (19–25). Legs (Fig. 2): dL of leg segments: I-L-1–6: 64 (64–74), 86 (86–87), 84 (82–92), 109 (105–123), 124 (116–124), 125 (115–125); II-L-1–6: 51 (44–51), 92 (89–116), 78 (76–86), 110 (110–132), 129 (129–149), 132 (127–142); III-L-1–6: 73 (54–73), 80 (80–108), 82 (72–86), 123 (105–123), 139 (107–139), 146 (121–146); IV-L-1–6: 126 (115–134), 119 (111–123), 118 (112–133), 169 (157–185), 169 (165–192), 167 (148–174).

Figure 1. 

Torrenticola pseudosiamis Gu & Guo, sp. nov., female A dorsal view B ventral view C palp, lateral view D infracapitulum and chelicera. Scale bars: 100 μm.

Male. Unknown.

Streamlet.

Due to the characteristic shape of gnathosoma and dorsal shield (i.e., gnathosoma with a short rostrum, the lateral view of gnathosoma regular triangle-like), this new species is similar to Torrenticola siamis Pešić & Smit, 2009 (Pešić and Smit 2009). However, there are obvious differences between them: (1) only the tip of Cx-I exceeding to the anterior margin of idiosoma in this new species, but the tip of Cx-I and Cx-II exceeding in T. siamis; (2) E₄ at the same level as the 6^th pair of acetabula in the new species, but the 4^th pair in T. siamis; (3) D₂ on the same level with muscle scars in the new species, but D₂ anterior to muscle scars in T. siamis.

Figure 2. 

Torrenticola pseudosiamis Gu & Guo, sp. nov., female A leg-I B leg-II C leg-III D leg-IV-1–4 E leg-IV-5–6. Scale bar: 100 μm.

The specific name is from Latin affix: “pseudo-”, which means fake or simulated; this new species is named after its similar species, T. siamis.

China (Zhejiang).

Holotype : ♀ (SC-TO-20160701), Anzihe, Chongzhou, Sichuan Province, P. R. China (30°47'43"N, 103°12'36"E, 1690 m a.s.l.), collected by Zhuhui Ding, 29-VII-2016. Paratype: 1 ♀ (SC-TO-20160702), same data as holotype.

Dorsal plate 4+1; infracapitular bay U-shaped and wide; genital flaps with six pairs of setae at the margins; E₄ at the same level as the 3^rd pair of acetabula; V₁ fused with the line of primary sclerotization; gnathosoma: rostrum long, dorsal apodemes short and sharp, ventral apodemes slender and sharp, claw short.

Female (n = 2): Idiosoma elliptical, L 840 (836), W 583 (576), L/W ratio 1.4 (1.5). Dorsal plate 4+1 (Fig. 3A), dorsal shield L 680 (668), W 520 (505), dorsal plate L 617 (602), frontal platelets L 162 (158), W 78 (76), shoulder platelets L 220 (218), W 87 (89). Infracapitular bay U-shaped and wide, depth 175 (162); Cx-I L 317 (315), mL 83 (81), Cx-II+III mL 99 (89); Gf L 200 (208), W 140 (144), L/W ratio 1.4 (1.4), genital flaps with six pairs of setae at the margins; distance between Gf and Ap 123 (134); E₄ at the same level as the 3^rd pair of acetabula; Ap on the same line with V₂, V₁ fused with the line of primary sclerotization, and V₁ anterior to V₂ (Fig. 3B). Gnathosoma (Fig. 3D): rostrum long, dorsal apodemes short and sharp, ventral apodemes slender and sharp, claw short; vL 355 (336), dL 256 (242); chelicera bs L 378 (369), claw L 63 (58). P-1 with one long dorsal seta; P-2 with three dorsal setae and one ventral seta at the base of the ventral extension; P-3 with two dorsal setae and one long seta at the base of the ventral extension; P-4 with one mediodistal seta and two ventral setae at two ventral extensions (Fig. 3C). dL of palp segments: P-1, 42 (39); P-2, 113 (109); P-3, 67 (66); P-4, 93 (95); P-5, 18 (16). Legs (Fig. 4): dL of leg segments: I-L-1–6: 44 (39), 95 (102), 88 (85), 102 (108), 110 (116), 96 (101); II-L-1–6: 43 (45), 98 (102), 93 (94), 121 (118), 136 (129), 149 (139); III-L-1–6: 43 (45), 98 (102), 81 (85), 101 (108), 117 (115), 114 (121); IV-L-1–6: 107 (102), 118 (115), 125 (119), 161 (158), 179 (183), 166 (171).

Figure 3. 

Torrenticola anziensis Gu & Guo, sp. nov., female A dorsal view B ventral view C palp, lateral view D infracapitulum and chelicera. Scale bars: 100 μm.

Male. Unknown.

Streamlet.

Due to the characteristic shape of gnathosoma and dorsal shield (i.e., gnathosoma with a long rostrum, dorsal and ventral apodemes sharp), this new species is similar to Torrenticola haliki Pešić & Smit, 2010 (Pešić and Smit 2010). However, there are obvious differences between them: (1) ventral projection of P-2 nose-shaped in T. haliki, but normally shaped in this new species; (2) P-4 with one long and three short setae at the base of ventral extensions and one thick mediodistal seta in T. haliki, but only with two ventral setae and one fine mediodistal seta in this new species; (3) ratio Cx-I mL/Cx-II+III mL 1.2 (male), 1.7–2.3 (female) in T. haliki, but 0.8 (female) in this new species.

Figure 4. 

Torrenticola anziensis Gu & Guo, sp. nov., female A leg-I B leg-II C leg-III D leg-IV-1–4 E leg-IV-5, 6. Scale bar: 100 μm.

This new species is named after Anzi (Anzi River), where the new species was collected.

China (Sichuan).

Holotype : ♀ (SC-TO-20160703), Anzihe National Nature Reserve, Chongzhou, Sichuan Province, P. R. China (30°47'43"N, 103°12'36"E, 1690 m a.s.l.), collected by Zhuhui Ding, 29-VII-2016. Paratype: 1 ♀ (SC-TO-20160704), same data as holotype.

Infracapitular bay U-shaped and wide; the tip of Cx-I with a papillary cuticular extension, E₄ at the same level as the posterior margins of Gf; V₁ fused with the line of primary sclerotization; D₂ on the same level with muscle scars; dorsal and ventral apodemes of gnathosoma slender and sharp; dorsal seta on P-1 long.

Female (n = 2): Idiosoma elliptical, L 749 (715), W 497 (469), L/W ratio 1.5 (1.5). Dorsal plate 4+1 (Fig. 5A), dorsal shield L 628 (586), W 438 (536), dorsal plate L 584 (423), frontal platelets L 118 (120), W 57 (68), shoulder platelets L 174 (157), W 80 (75). Infracapitular bay U-shaped and wide, depth 171 (163); the margins of Cx-II and Cx-III blunt and flat, the tip of Cx-I with a papillary cuticular extension, Cx-I L 292 (266), mL 123 (102), Cx-II+III mL 46 (31); Gf pentagonal, L 156 (159), W 122 (109), L/W ratio 1.3 (1.5), genital flaps with six pairs of setae at the margins; distance between Gf and Ap 222 (181); E₄ at the same level as the posterior margins of Gf; V₁ fused with the line of primary sclerotization, Ap at the same line with V₂ (Fig. 5B). Gnathosoma (Fig. 5D) vL 182 (177), dL 177 (116); dorsal and ventral apodemes slender and sharp; claw short, chelicera bs L 159 (162), claw L 27 (22). P-1 with one long dorsal seta; P-2 with three dorsal and one ventral setae; P-3 with two long dorsal setae and one short ventral seta; P-4 with one short dorsal seta and two mediodistal setae (Fig. 5C). dL of palp segments: P-1, 21 (25); P-2, 52 (48); P-3, 34 (32); P-4, 34 (39); P-5, 17 (14). Legs (Fig. 6): dL of leg segments: I-L-1–6: 57 (46), 70 (71), 59 (62), 67 (80), 58 (72), 79 (83); II-L-1–6: 55 (61), 92 (85), 56 (60), 86 (75), 84 (92), 108 (96); III-L-1–6: 63 (51), 99 (92), 71 (69), 94 (95), 118 (112), 120 (115); IV-L-1–6: 113 (115), 97 (87), 115 (111), 138 (140), 151 (126), 144 (142).

Figure 5. 

Monatractides sichuanensis Gu & Guo, sp. nov., female A dorsal view B ventral view C palp, lateral view D infracapitulum and chelicera. Scale bars: 100 μm.

Male. Unknown.

Streamlet.

This new species is similar to Monatractides harveyi Pešić & Smit, 2012 (Pešić and Smit 2012) in the general shape of gnathosoma, but differs in: (1) P-4 with small denticles near the insertion of the ventral setae in M. harveyi, but smooth in the new species; (2) the margins of Cx-II and Cx-III sharp in M. harveyi, but blunt and flat in the new species; (3) D₂ anterior to muscle scars in M. harveyi, but D₂ on the same level with muscle scars in the new species.

Figure 6. 

Monatractides sichuanensis Gu & Guo, sp. nov., female A leg-I B leg-II C leg-III D leg-IV-1–4 E leg-IV-5, 6. Scale bar: 100 μm.

This new species is named after Sichuan Province, where it was collected.

China (Sichuan).

Qingliangfeng National Nature Reserve, Lin’an, Zhejiang Province, P. R. China (30°6'44"N, 118°53'36"E, 940 m a.s.l.), collected by Xinyao Gu, 31-VII-2018, 1 ♀(ZJ-TO-20180704), 2 ♂♂ (ZJ-TO-20180705, ZJ-TO-20180706).

Male (n = 1): Idiosoma L 1083, W 833, L/W ratio 1.3. Dorsal plate 4+1 (Fig. 7A) with a red colour patterns, dorsal shield L 898, W 749, dorsal plate L 804, frontal platelets L 181, W 103, shoulder platelets L 254, W 115. Infracapitular bay U-shaped, depth 206; Cx-I L 376, mL 177, Cx-II+III mL 65; Gf elongated and oval, L 246, W 188, L/W ratio 1.3; distance between Gf and Ap 206. Gnathosoma (Fig. 7D) vL 231, dL 158; dorsal apodeme blunted and ventral apodeme sharp; chelicera bs L 284, claw L 27. P-1 with one dorsal seta; P-2 with three dorsal and one ventral setae; P-3 with two dorsal and one long ventral setae; P-4 with one ventral seta on the slight ventral extension (Fig. 7C). dL of palp segments: P-1, 34; P-2, 80; P-3, 54; P-4, 74; P-5, 30. Legs: dL of leg segments: I-L-1–6: 70, 129, 114, 147, 144, 125; II-L-1–6: 70, 116, 107, 151, 188, 164; III-L-1–6: 86, 146, 108, 169, 216, 192; IV-L-1–6: 152, 159, 176, 220, 241, 224. Ejaculatory complex: L 326, aL 221.

Figure 7. 

Monatractides macrocorpis Gu & Guo, 2019, male A dorsal view B ventral view C palp, lateral view D infracapitulum and chelicera. Scale bars: 100 μm.

Female (n = 2). Body features same as the male except: Idiosoma L 1212 (1213), W 945 (949), L/W ratio 1.2 (1.3). Dorsal plate (Fig. 8A), dorsal shield L 959 (989), W 871 (845), dorsal plate L 918 (928), frontal platelets L 195 (173), W 109 (96), shoulder platelets L 269 (295), W 123 (117). Infracapitular bay depth 220 (222); Cx-I L 369 (402), mL 145 (176), Cx-II+III mL 68 (38); Gf L 256 (267), W 253 (236), L/W ratio 1.0 (1.1); distance between Gf and Ap 292 (248). Gnathosoma (Fig. 8B) vL 257 (259), dL 246 (262), claw short L 32 (29), chelicera bs L 246 (262). dL of palp segments: P-1, 32 (34); P-2, 90 (91); P-3, 51 (58); P-4, 77 (83); P-5, 21 (32). Legs: dL of leg segments: I-L-1–6: 100 (77), 114 (137), 121 (120), 153 (157), 147 (149), 127 (123); II-L-1–6: 90 (78), 134 (148), 99 (98), 154 (175), 195 (203), 168 (176); III-L-1–6: 101 (-), 161 (170), 119 (120), 177 (193), 214 (228), 217 (203); IV-L-1–6: 144 (159), 181 (160), 188 (192), 235 (243), 245 (261), 230 (220).

Figure 8. 

Monatractides macrocorpis Gu & Guo, 2019, female A dorsal view B infracapitulum and chelicera. Scale bars: 100 μm.

Streamlet.

The populations from Zhejiang Province fit the definition of Monatractides macrocorpis Gu & Guo, 2019 (Gu et al. 2019b). Differences with the original description are: (1) the ventral apodeme of gnathosoma, sharp in Zhejiang specimens, but blunt in Hunan specimens; (2) with a red colour pattern in Zhejiang specimens, but purple in Hunan specimens.

China (Hunan, Zhejiang).

Qingliangfeng National Nature Reserve, Lin’an, Zhejiang Province, P. R. China (30°6'12"N, 118°55'12"E, 440 m a.s.l.), female, collected by Xinyao Gu, 31-VII-2018, 3 ♀♀ (ZJ-TO-20180707 – ZJ-TO-20180709).

Female (n = 3): Idiosoma elliptical, L 741 (722–762), W 473 (472–491), L/W ratio 1.6 (1.5–1.6). Dorsal plate 4+1 (Fig. 9A), dorsal shield L 631 (595–656), W 428 (413–441), dorsal plate L 567 (541–579), frontal platelets trapezoidal, L 131 (120–138), W 62 (62–74), shoulder platelets triangular, L 155 (142–155), W 76 (72–79). Infracapitular bay depth 134 (134–150); Cx-I L 269 (244–269), mL 133 (92–133), Cx-II+III mL 37 (37–42); Gf L 132 (132–151), W 116 (115–118), L/W ratio 1.1 (1.1–1.3), distance between Gf and Ap 197 (197–217); Ap away from the line of primary sclerotization, on the same line with V₁ and anterior to V₂ (Fig. 9B). Gnathosoma (Fig. 9C) vL 152 (152–173), dL 117 (113–121); claw short L 23 (19–23), chelicera bs L 159 (159–172). dL of palp segments: P-1, 23 (20–23); P-2, 52 (43–52); P-3, 34 (34–38); P-4, 44 (43–44); P-5, 15 (15–19). dL of leg segments: I-L-1–6: 66 (60–66), 71 (71–81), 76 (67–76), 97 (90–98), 97 (94–97), 92 (88–94); II-L-1–6: 63 (58–63), 80 (72–85), 68 (60–76), 93 (88–93), 107 (96–107), 109 (107–115); III-L-1–6: 54 (54–58), 93 (87–93), 71 (71–74), 99 (97–109), 127 (114–127), 117 (112–127); IV-L-1–6: 102 (99–114), 94 (88–108), 115 (109–118), 145 (133–154), 154 (151–156), 147 (135–149).

Figure 9. 

Monatractides xiaoxiensis Gu & Guo, 2019, female A dorsal view B ventral view C infracapitulum and chelicera. Scale bars: 100 μm.

Male. Unknown.

Streamlet.

The specimens match the general morphology of Monatractides xiaoxiensis Gu & Guo, 2019, a species from China (Gu et al. 2019b). Monatractides xiaoxiensis is characterized by: frontal platelets trapezoidal, shoulder platelets triangular; only the tip of Cx-I and Cx-II exceeding to the anterior margin of idiosoma; tips of Cx-I with an elongated cuticle extension; gnathosoma dorsal apodeme long with a blunt end, ventral apodeme pointed and bent towards dorsum; bs curved heavily towards ventrum (Gu et al. 2019b). According to these characters, we believe our specimens from Zhejiang Province are M. xiaoxiensis. The only differences are found in V₄, which is away from the line of primary sclerotization in Zhejiang specimens, but close to the line in Hunan specimens.

China (Hunan, Zhejiang).