Sinopoda horizontalis Zhong, Cao & Liu, 2017

Zhang, Jianshuang, Xing, Yuanqian, Yang, Jinghui, Yu, Hao & Zhong, Yang, 2023, Two new species of Sinopoda from China, with first description of the male of S. horizontalis Zhong, Cao & Liu, 2017 (Araneae, Sparassidae), ZooKeys 1159, pp. 133-155 : 133

publication ID	https://dx.doi.org/10.3897/zookeys.1159.101535
publication LSID	lsid:zoobank.org:pub:85B4CC9F-6985-4193-8B17-0257600CF650
persistent identifier	https://treatment.plazi.org/id/719FAB83-3084-5101-9A95-D693A78E29F2
treatment provided by	ZooKeys by Pensoft
scientific name	Sinopoda horizontalis Zhong, Cao & Liu, 2017
status

Treatment

Sinopoda horizontalis Zhong, Cao & Liu, 2017 View in CoL View at ENA

Figs 4 View Figure 4 , 5 View Figure 5 , 6 View Figure 6 , 9 View Figure 9

Sinopoda horizontalis Zhong, Cao & Liu, 2017: 157, figs 5A, B, 6A, B, 15A, B (♀).

Holotype examined.

♀ (ZY-2013-SPA007), China: Fujian Province: Wuyishan City, Wuyishan National Nature Reserve, 27.35°N, 117.29°E, c. 1152 m, by hand, 16 VI 2013, Y. Zhong and X.W. Cao leg.

New material examined.

3♂, 1♀ (ZY-2021-SPA011-014). Same locality as holotype, by hand, 16.VI.2021, Y. Zhong leg.

Diagnosis.

Males of S. horizontalis resemble those of S. hamata (Fox, 1937) and S. liui Zhong, Cao & Liu, 2017 in the general shape of the male palp. The palps of the three species share the similarly shaped conductor and embolus, and the distinctly long, ribbon-shaped dRTA which with lumpy margins, but differ in the following: the vRTA digitiform, distinctly longer than wide, apex blunt in S. horizontalis (vs. laminar, distinctly wider than long in S. hamata , thumb-shaped, apex beak-shaped and relatively sharper in S. liui ) (cf. Fig. 4A, B, D View Figure 4 and Zhong et al. 2018: figs 6C, 7C and Zhong et al. 2019: figs 31C, 32C). Females also resemble those of S. hamata and S. liui in having the strongly narrow lobal septum anteriorly, and the distinctly bilobed posterior margin of epigynal plate, but can be recognised from S. hamata by the internal ducts running parallel along median line (vs. convergent anteriorly but distinctly oblique posteriorly) (cf. Fig. 6C-F View Figure 6 and Zhong et al. 2018: figs 6D, E, 7D, E); and from S. liui can be recognised by the posterior part of spermathecae are proportionately longer, nearly 2/5 length of internal ducts (vs. proportionately much shorter, no more than 1/4 length of internal ducts) (cf. Fig. 6C-F View Figure 6 and Zhong et al. 2019: fig. 33B and Zhong et al. 2017: figs 5D, 6D).

Description.

Male (ZY-2021-SPA011). Total length 14.8. Prosoma 7.0 long, 6.7 wide, anterior width of prosoma 3.4. Opisthosoma 7.8 long, 5.2 wide. Eye sizes and interdistances: AME 0.24, ALE 0.45, PME 0.22, PLE 0.50, AME-AME 0.21, AME-ALE 0.13, PME-PME 0.41, PME-PLE 0.38, AME-PME 0.48, ALE-PLE 0.40, CHAME 0.29, CHALE 0.35. Spination: Palp: 131, 101, 1021; Fe: I-III 323, IV 321; Pa: I-IV 101; Ti: I-IV 2226; Mt: I-II 1014, III 2026, IV 3036. Measurements of palp and legs: Palp 9.7 (2.8, 2.0, 2.1, 2.8), I 34.0 (9.9, 3.8, 8.4, 8.9, 3.0), II 35.8 (10.6, 3.8, 9.0, 9.5, 2.9), III 27.7 (7.8, 3.6, 7.2, 7.0, 2.1), IV 28.9 (8.6, 3.1, 7.0, 7.7, 2.5). Leg formula: II-I-IV-III. Cheliceral furrow with three anterior and four posterior teeth, and with ~ 32 denticles.

Colouration in ethanol (Fig. 5D, E View Figure 5 ). Prosoma dark yellowish to brown, with yellow submarginal transversal band at posterior part. Median band of prosoma bright yellowish-brown, lateral bands brown and not distinctly delimited to median band. Fovea and radial furrows distinctly marked. Chelicerae dark reddish-brown. Sternum light yellow, margin slightly darker. Endites and labium yellowish, both with distal parts brighter. Legs dark yellowish-brown, covered by short spines. Dorsal opisthosoma brown, with an irregular yellow media band, reaching 2/3 of abdomen length, with five pairs of inconspicuous black dots on each side; ventral opisthosoma yellowish-brown with irregular pattern and two longitudinal yellow lines between epigastric furrow and spinnerets.

Palp (Figs 4 View Figure 4 , 5A-C View Figure 5 ). Cymbium distinctly longer than tibia. Embolus filiform, Ƨ-shaped, arising from tegulum at nearly the 7-8 o’clock position in ventral view, terminating at c. 12 o’clock position. Conductor long, c. 2/3 of the tegulum length, curving medially, arising at 12- 1 o’clock position from tegulum. Tegulum oval, slightly bulged, medially with distinct spermophore, proximally covering embolic base; spermophore <-shaped in ventral view. RTA arising mesially to distally from tibia, ventrally with distinct brush of stiff setae. dRTA ribbon-shaped, distinctly long, curved and tapering, almost extending media part of cymbium; vRTA digitiform, relatively short, about 1/2 of tibia length, apex round.

Female (ZY-2021-SPA014). Total length 14.9. Prosoma 7.6 long, 7.3 wide, anterior width of prosoma 4.5. Opisthosoma 9.3 long, 5.8 wide. Eye sizes and interdistances: AME 0.30, ALE 0.48, PME 0.36, PLE 0.58, AME-AME 0.25, AME-ALE 0.17, PME-PME 0.45, PME-PLE 0.61, AME-PME 0.62, ALE-PLE 0.66, CHAME 0.31, CHALE 0.45. Spination: Palp: 131, 101, 2121, 1014; Fe: I-III 323, IV 321; Pa: I-IV 101; Ti: I-III 2024, IV 2124; Mt: I-II 1014, III 2026, IV 3036. Measurements of palp and legs: Palp 9.6 (2.8, 1.4, 2.2, 3.2), I 24.3 (6.3, 2.6, 6.3, 6.6, 2.5), II 25.9 (8.3, 3.3, 7.1, 5.2, 2.0), III 20.2 (7.7, 3.4, 3.6, 3.8, 1.7), IV 22.2 (7.1, 2.5, 5.8, 4.9, 1.9). Leg formula: II-IV-III-I. Cheliceral furrow with three anterior and four posterior teeth, and with ~ 40 denticles. Colouration in ethanol as in males, but body slightly darker (Fig. 6A, B View Figure 6 ; see Zhong et al. (2017) for others described). Copulatory organ as in Fig. 6C, D View Figure 6 (topotype) and Fig. 6E, F View Figure 6 (holotype).

Distribution.

Known only from the type locality, Wuyishan National Nature Reserve, Fujian, China (Fig. 9 View Figure 9 ).