Synagelides tangi, Liu & Chen & Xiao & Xu & Peng, 2017

Liu, Keke, Chen, Zhiwu, Xiao, Yonghong, Xu, Xiang & Peng, Xianjin, 2017, Three new species of Synagelides Strand, 1906 from China (Araneae: Salticidae), Zootaxa 4350 (2), pp. 291-300 : 294-297

Synagelides tangi sp. nov.

Figures 3−6 , 9

Type material: Holotype: male (ASM-JGSU) from Shuikou, Xiajing village, Ciping Town, Jinggangshan County Level City, Jiangxi Province, China (26.551°N, 114.462°E, alt. 898 m), 7.XII.2013, K. Liu, Z. Chen & B. Xiao. Paratypes: 2 males and 1 female (ASM-JGSU), same data as holotype; China: Jiangxi Province, Jinggangshan County Level City: 1 male (ASM-JGSU), Xiajing village, Ciping Town (26.546°N, 114.467°E, alt. 849 m), 7.XII.2013, K. Liu, Z. Chen, B. Xiao; Maoping Town: 1 female and 3 males (ASM-JGSU) (Yuantou village, 26.626°N, 114.106°E, alt. 791 m), 5.IV.2014, K. Liu, Z. Chen, X. Huang, Z. Meng & Y. Tang; 4 females and 5 males (ASM-JGSU) (Yuantou village, 26.628°N, 114.106°E, alt. 906 m), 5.IV.2014, K. Liu, Z. Chen, X. Huang, Z. Meng & Y. Tang; 1 female (ASM-JGSU) (Huangyangjie, 26.623°N, 114.117°E, alt. 1055 m), 5.IV.2014, K. Liu, Z. Chen, X. Huang, Z. Meng & Y. Tang; 1 male (ASM-JGSU) (Yuantou village, 26.632°N, 114.106°E, alt. 1029 m), 5.IV.2014, K. Liu, Z. Chen, X. Huang, Z. Meng & Y. Tang; Ciping Town: 1 male (ASM-JGSU) (Dajing village, 26.570°N, 114.122°E, alt. 956 m), 27.VIII.2015, Z. Chen, C. Dong, J. Zhang, C. Wu, X. Chen, Q. Chen, N. Wang, B. Xiao, S. Wu, S. He, C. Xu, H. Wu, H. Xiao, Y. Peng, D. Wu & X. Liu.

Etymology. The specific name is a patronym in honor of Doctor Guo Tang, who contributed with many papers on spider taxonomy in China.

Diagnosis. Males of this species can be easily identified ( Figs 3C −F , 5C −G , 6A −D ) by the blunt tip of broad median apophysis, the presence of a hook-shaped tibial apophysis, a thumb-like cymbial apophysis ventrally and a long posterior cymbial apophysis dorsally. The female is different from any other congeneric species by its genital area ( Figs 4C–D , 6E–F ), with very small and long C-shaped sclerotized loops and clear bell-shaped hood.

Description: Male ( Figs 3 , 5 , 6A −D ). Total length 3.29, CL 1.59, CW 1.03, AL 1.62, AW 0.85. EL 0.92, AERW 1.04, AMEW 0.65, PERW 1.05, PMEW 0.87. Carapace reddish-brown ( Fig. 3A ), with radial grooves. Eye field square, covered with short yellow hairs. Fovea round, hollowed. Chelicerae yellowish-brown ( Fig. 3B ), with typical dentition: 2 promarginal teeth and 1 large bifurcated retromarginal tooth ( Fig. 5B ). Endites yellowishbrown ( Fig. 3B ), with abundant hairs on anterior inner margin, slightly longer than wide. Labium oval ( Fig. 3B ), yellowish-brown, with a few strong setae on anterior margin. Sternum reddish-brown ( Fig. 3B ). Measurements of legs: I 3.16 [0.99, 0.74, 0.79, 0.35, 0.29]; II 2.21 [0.68, 0.32, 0.48, 0.43, 0.30]; III 2.32 [0.67, 0.30, 0.48, 0.55, 0.32]; IV 3.28 [0.98, 0.41, 0.79, 0.75, 0.35]. Leg formula: IV, I, III, II. Femur I width 0.32; femur II width 0.22. Leg spination: I: Tibia p v 0-3-0, r v 0-3-0; Metatarsus p v 1 -0-1, r v 1 -0-1. Abdomen oval ( Figs 3A, B ), dorsum dark yellowish-gray, with two pairs of patches on anterior part, an obvious transverse light band on the medial part, and six lighter herringbone strips on posterior part. Spinnerets yellowish-brown ( Fig. 3B ), with abundant brown hairs. Palp ( Figs 3C −F , 5C −G , 6A −D ) with a short, hook-shaped tibial apophysis and a thumb-like cymbial apophysis, a long posterior apophysis on dorsal cymbium, all of them appressed to cymbium. Spiral embolus short, extending along the margin of the broad median apophysis.

Female ( Figs 4 , 6E–F ). Total length 3.65, CL 1.73, CW 1.12, AL 1.79, AW 1.09. EL 0.99; AERW 1.14, AMEW 0.78, PERW 1.14, PMEW 1.02. Abdomen ( Figs 4A, B ), with lighter and slender herringbone strip. Measurements of legs: I 3.15 [0.98, 0.76, 0.81, 0.35, 0.25]; II 2.34 [0.78, 0.35, 0.48, 0.46, 0.27]; III 2.56 [0.77, 0.33, 0.56, 0.61, 0.29]; IV 3.64 [0.97, 0.49, 0.88, 0.87, 0.43]. Leg formula: IV, I, III, II. Femur I width 0.32; femur II width 0.24. Epigyne ( Figs 4C–D , 6E–F ) with bell-shaped hood and copulatory openings bilaterally located; copulatory ducts with short C-shaped sclerotized loops, distally slender with short glandular ducts; spermathecae elongated, fertilization ducts short.

Distribution. Known only from Jiangxi Province, China ( Fig. 9 ).

Figures

FIGURES 3 A – F. Synagelides tangi sp. nov., male holotype. A. Dorsal view. B. Ventral view. C. Palp, prolateral view. D. Same, dorso-prolateral view. E. Same, ventral view. F. Same, retrolateral view. Scale bars: A, B, 1 mm; C − F, 0.2 mm.

FIGURES 4 A – D. Synagelides tangi sp. nov., female paratype. A. Dorsal view. B. Ventral view. C. Epigyne, ventral view. D. Dorsal (black arrows show the small C-shaped sclerotized epigynal loop. Scale bars: A, B, 1 mm; C, D, 0.1 mm.

FIGURES 5 A – G. Synagelides tangi sp. nov., SEM images of male holotype. A. Dorsal view. B. Chelicera, retrolateral view. C. Palp, prolateral view. D. Same, ventrolateral view. E. Same, dorsal view. F. Same, dorsolateral view. G. Same, retrolateral view. Abbreviations: Em, embolus; HTA, hook-shaped tibial apophysis; MA, median apophysis; PA, posterior cymbial apophysis; PT, promarginal teeth; RT, retromarginal teeth; TCA, thumb-like cymbial apophysis. Scale bars: A, 0.2 mm; B, 20 um; C − G, 0.1 mm.

FIGURES 6 A – F. Synagelides tangi sp. nov. A. Male palp, ventral view. B. Dorsolateral view. C. Prolateral view. D. Retrolateral view. E. Epigyne, ventral view. F. Dorsal view (black arrow shows the small C-shaped sclerotized epigynal loop). Abbreviations: CD, copulatory duct; CO, copulatory opening; Em, embolus; FD, fertilization ducts; GD, glandular duct; HTA, hook-shaped tibial apophysis; MA, median apophysis; PA, posterior cymbial apophysis; Spm, spermatheca. TCA, thumb-like cymbial apophysis. Scale bars: A − D, 0.2 mm; E – F, 0.1 mm.

FIGURE 9. Records of Synagelides jinggangensis sp. nov., S. tangi sp. nov. and S. yinae sp. nov. in Jinggangshan National Natural Reserve, Jiangxi province, China.