Monatractides sichuanensis Gu & Guo, 2020
|
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/8EFE370B-7D4D-46B4-9D87-2608AE618101 |
|
taxon LSID |
lsid:zoobank.org:act:8EFE370B-7D4D-46B4-9D87-2608AE618101 |
|
treatment provided by |
|
|
scientific name |
Monatractides sichuanensis Gu & Guo |
| status |
sp. nov. |
Monatractides sichuanensis Gu & Guo sp. nov. Figures 5 View Figure 5 , 6 View Figure 6
Material examined.
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.
Diagnosis.
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.
Description.
Female (n = 2): Idiosoma elliptical, L 749 (715), W 497 (469), L/W ratio 1.5 (1.5). Dorsal plate 4+1 (Fig. 5A View Figure 5 ), 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 View Figure 5 ). Gnathosoma (Fig. 5D View Figure 5 ) 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 View Figure 5 ). 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 View Figure 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).
Male. Unknown.
Habitat.
Streamlet.
Remarks.
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.
Etymology.
This new species is named after Sichuan Province, where it was collected.
Distribution.
China (Sichuan).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.