Monatractides macrocorpis Gu & Guo, 2019

Gu, Xin-Yao, Jia, Lan, Jin, Dao-Chao & Guo, Jian-Jun, 2020, Contributions to Chinese fauna of Torrenticolidae Piersig, 1902 (Acari, Hydrachnidia), with the description of three new species, ZooKeys 955, pp. 97-111 : 97

publication ID

https://dx.doi.org/10.3897/zookeys.955.52584

publication LSID

lsid:zoobank.org:pub:AB18D541-08E8-49DA-B543-7D2F127A4E82

persistent identifier

https://treatment.plazi.org/id/82581258-93B6-5DBD-AA47-83BC97F5EDC6

treatment provided by

ZooKeys by Pensoft

scientific name

Monatractides macrocorpis Gu & Guo, 2019
status

 

Monatractides macrocorpis Gu & Guo, 2019 Figures 7 View Figure 7 , 8 View Figure 8

Material examined.

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).

Morphology.

Male (n = 1): Idiosoma L 1083, W 833, L/W ratio 1.3. Dorsal plate 4+1 (Fig. 7A View Figure 7 ) 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 View Figure 7 ) 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 View Figure 7 ). 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.

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 View Figure 8 ), 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 View Figure 8 ) 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).

Habitat.

Streamlet.

Remarks.

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.

Distribution.

China (Hunan, Zhejiang).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Trombidiformes

Family

Torrenticolidae

SubFamily

Torrenticolinae

Genus

Monatractides