Wandesia (Wandesia) boyani Li & Guo, 2021

Li, Haitao, Gu, Xinyao, Jin, Daochao & Guo, Jianjun, 2021, Wandesia (s. str.) boyani Li & Guo, sp. nov., a new species representing a newly recorded subfamily Wandesiinae Schwoerbel, 1961 from China, Zoological Systematics 46 (2), pp. 176-181 : 178-180

publication ID	https://doi.org/ 10.11865/zs.2021203
publication LSID	lsid:zoobank.org:pub:2FD04A04-DA75-456B-85D1-29B555FE0EE5
persistent identifier	https://treatment.plazi.org/id/03D7EC2C-275B-FF87-D981-B46B481AFAA3
treatment provided by	Diego
scientific name	Wandesia (Wandesia) boyani Li & Guo
status	sp. nov.

Treatment

Wandesia (Wandesia) boyani Li & Guo , sp. nov. ( Figs 1–15 View Figures 1–3 View Figures 4–10 View Figure 11–15 )

Type material. Holotype ♀, Chaqingsongduo National Nature Reserve , Sichuan Province, P. R. China (31°00′88′′N,

99°24′71′′E; elev. 3523 m), water depth 30–40 cm, located at the hillside, running water with organic detritus, dead wood and leaves on the bottom, coll. Boyan Li, 30.VIII.2020, slides no. SC-HY-20200801.

Diagnosis. The species can be distinguished by: idiosoma extremely soft and transparent; A 2 on the same level with O 2; P-IV distal extension appearing much like a heavy seta; P- Ⅴ with one ventral seta and two setae on outer side; ACG rounded at posterolateral corner; Cx-I with three setae, downmost seta on the same level with ACG suture endpoint; Cx-IV reduced, and separated from the neighboring seta; three pairs of acetabula with short stalks, and arranged triangularly on each side, and Ac-2 closer to Ac-3 than to Ac-1; pregenital sclerite lily-shaped; E 4 in the middle of Ac-1 and Ac-2.

Description. Female (SC-HY-20200801). Red in colour, body much elongated; idiosomal integument extremely soft and transparent; dorsum without sclerites; pigmented eyes present below the integument; gland spherical, glandular integument mesh-bag-shaped ( Fig. 4 View Figures 4–10 ), glandular sclerite weakly sclerotized, without well-defined borders ( Fig. 5 View Figures 4–10 ); A 2 on the same level with O 2 ( Fig. 6 View Figures 4–10 ).

Infracapitulum with two pairs of setae at rostrum ( Fig. 7 View Figures 4–10 ). Chelicera two-segmented, chelicera claw dentate ( Fig. 8 View Figures 4–10 ). Palp five-segmented; P-I without seta; P-II with one dorsodistal seta; P-III with one dorsal seta and one seta on outer side; P-IV with one dorsal, one ventral setae, and one seta on inner side, distal extension appearing much like a heavy seta; P- Ⅴ with a three-branched claw at the distal end, one ventral and two setae on outer side ( Figs. 9–10 View Figures 4–10 ).

ACG rounded at posterolateral corner, suture half the length of ACG; Cx-I with three setae, downmost seta on the same level with suture endpoint; Cx-II without seta; Cx-III with one premedial seta; Cx-IV reduced, and separated from the neighboring seta; E 2 at the middle of coxae ( Fig. 11 View Figure 11–15 ).

Genital field with three pairs of acetabula with short stalks, and arranged triangularly on each side; Ac-1 on two flanks of posterior gonopore, Ac-2 closer to Ac-3 than to Ac-1; pregenital sclerite lily-shaped, postgenital sclerite reduced; three pairs of setae on each side of gonopore; E 4 in the middle of Ac-1 and Ac-2 ( Fig. 11 View Figure 11–15 ).

Legs without swimming setae; III-L-2–5 with two rough setae ventrally, respectively; all claws simple ( Fig. 12–15 View Figure 11–15 ).

Male. Unknown.

Measurements (holotype). Idiosoma L 2395, W 355; Gland L 16, W 20; infracapitulum L 165, W 70; chelicera base segment L 125, W 36, claw L 55; palp dL/W, dL/W ratio: P-Ⅰ 20/35, 0.57; P-II 54/45, 1.20; P-III 47/42, 1.12; P-IV 67/28, 2.39; P- Ⅴ 18/12, 1.5; P-IV distal extension L 15; ACG L 122, W 94; PCG L 125, W 74; Ac-1 L/W, L/W ratio: Ac-1 37/22, 1.68; Ac-2 48/25, 1.92; Ac-3 54/31, 1.74; leg segment dL (W): Ⅰ-L-1 43 (39), Ⅰ-L-2 75 (34), Ⅰ-L-3 73 (32), Ⅰ-L-4 90 (37), Ⅰ- L-5 106 (36), Ⅰ-L-6 88 (35), claw dL 33; II-L-1 43 (36), II-L-2 90 (35), II-L-3 76 (38), II-L-4 94 (38), II-L-5 109 (40), II-L- 6 87 (34), claw dL 35; III-L-1 40 (36), III-L-2 64 (29), III-L-3 59 (29), III-L-4 78 (30), III-L-5 89 (31), III-L-6 73 (27), claw dL 32; IV-L-1 54 (35), IV-L-2 88 (35), IV-L-3 85 (31), IV-L-4 102 (28), IV-L-5 110 (28), IV-L-6 78 (33), claw dL 37.

Etymology. The new species is named after the collector, Boyan Li.

Remarks. So far, 35 species in the subgenus Wandesia are recorded worldwide. Therein, acetabula of 18 species are with obviously stalked structure. The present new species is similar to W. (s. str.) extendens Cook, 1974 and W. (s. str.) albertii Pešić & Smit, 2018 from America and Kyrgyzstan in the shapes of palps and epimera. It is different from W. extendens in the following aspects: (1) acetabula L 37–54 in the new species, but 24–38 in W. extendens; (2) Ac-2 closer to Ac-3 than to Ac-1, 3 acetabula ranged triangularly per side in the new species; while Ac- 2 in the middle of Ac-1 and Ac-3, acetabula ranged in linear in W. extendens; (3) pregenital sclerite lily-shaped in the new species, but rounded in W. extendens; (4) Cx-III with seta in the anterior part in the new species, while in the middle in W. extendens ( Cook, 1974). The new species is also distinguished from W. albertii by: (1) idiosoma L 2395 in the new species, but 1500 in W. albertii ; (2) P-IV L/H ratio 2.39 in the new species, while 3.7 in W. albertii ; (3) 3 pairs of setae around gonopore in the new species, but no visible setae in W. albertii ; (4) Ac-1 at the posterior of gonopore in the new species, while in the middle in W. albertii ; (5) E 4 beneath the gonopore in the new species, but at the posterior of gonopore in W. albertii (Pesic & Smit, 2018) .

Funding This research was supported by National Natural Science Foundation of China (31772421, 31750002), Guizhou Science and Technology Project (Qiankehe Pingtai Rencai [2017] 5788).

Acknowledgements We are indebted to Dr. Reinhard Gerecke (Department of Evolution and Ecology, Auf der Morgenstelle 28E, DE 72076 Tübingen, Germany) for providing literature. Furthermore, we are grateful to Boyan Li (Institute of Entomology, Guizhou University, P. R. China) for collecting of the specimen.