Synagelides triangulatus Liu, 2022

Liu, Ke-ke, Zhao, Zi-Yi, Xiao, Yong-hong & Peng, Xian-Jin, 2022, Five new species of Synagelides Strand, 1906 from China (Araneae, Salticidae), ZooKeys 1102, pp. 59-82 : 59

Synagelides triangulatus Liu sp. nov.

Fig. 12

Material examined.

Holotype ♀, 26°00'28.25"N, 114°08'47.43"E, 1046 m, near Viewing Platform , Wuzhifeng Scenic Spot , Wuzhifeng Town , Shangyou County, Ganzhou City, Jiangxi Province, China, 1 October 2020, K. Liu, Y. Ying, M. Zhang & J. Yan leg. Paratype 1 subadult male, the same data as holotype .

Etymology.

The name is from the Latin word Synagelides triangulatus , referring to the shape of the median septum; adjective.

Diagnosis.

The female of this species is most similar to Synagelides kosi Logunov & Hereward, 2006 ( Logunov and Hereward 2006: 285, figs 24, 32) and S. jinggangshanensis Liu et al., 2017 ( Liu et al. 2017: 292, figs 1C, D, 2A, B; holotype examined) in having the C-shaped median part and the sloping, slender, tub-shaped posterior part of copulatory duct, but can be separated from them by (Fig. 12C, D ) the broad, bell-shaped epigynal hood (vs relatively thin in S. kosi and S. jinggangshanensis ), the relatively broad triangular median septum (vs nearly T-shaped in S. kosi and and S. jinggangshanensis ), and the closely touching spermathecae (vs slightly separated in S. kosi and S. jinggangshanensis ). It also resembles seven other species, S. annae (see Bohdanowicz 1979: 56, figs 14-17), S. birmanicus Bohdanowicz, 1987 (see Bohdanowicz 1987: 84, figs 66-72), S. cavaleriei (Schenkel, 1963) (see Bohdanowicz 1987: 66, figs 1, 2), S. gosainkundicus Bohdanowicz, 1987 (see Bohdanowicz 1987: 78, figs 45, 46), S. martensi Bohdanowicz, 1987 (see Logunov and Hereward 2006: 287, figs 37-40), S. oleksiaki Bohdanowicz, 1987 (see Bohdanowicz 1987: 79, figs 47, 48), and S. walesai Bohdanowicz, 1987 (see Bohdanowicz 1987: 72, figs 23, 24), but can be easily distinguished from them in having the spermathecae as long as median septum (vs shorter or longer).

Description.

Habitus as in Fig. 12A, B . Total length 3.16. Carapace 1.39 long, 1.01 wide. Eye sizes and interdistances: AME 0.23; ALE 0.16; PME 0.06; PLE 0.16; AME-AME 0.09; AME-ALE 0.08; PME-PME 0.81; ALE-ALE 0.76; PME-PLE 0.26; PLE-PLE 0.89; ALE-PLE 0.70; AME-PME 0.37; AME-PLE 0.57. MOA: 0.55 long; 0.64 anterior width, 0.90 posterior width. Fovea (Fig. 12A ) round, hollowed. Chelicerae (Fig. 12B ) with two promarginal teeth (proximal larger) and one large laminar retromarginal teeth. Sternum (Fig. 12A, B ) shield-shaped, longer than wide, posterior end arch-shaped. Leg measurements: I 2.97 (0.93, 0.68, 0.75, 0.33, 0.28); II 1.88 (0.6, 0.28, 0.3, 0.4, 0.3); III 2.34 (0.67, 0.37, 0.46, 0.57, 0.27); IV 3.06 (0.79, 0.39, 0.81, 0.73, 0.34). Femur width: I 0.29; II 0.17; III 0.18; IV 0.25. Leg spination (Fig. 12A, B ): I tipv 2-2-1, rv 2-2-0; Met pv 1-0-1, rv 1-0-1. Pedicel 0.18. Abdomen 1.57 long, 0.96 wide.

Coloration (Fig. 12A, B ). Carapace dark reddish brown, anterior part darker than posterior, posteriorly with radial grooves, 14-16 rows of short black setae. Endites yellow-brown, mottled. Labium yellow-brown, anteriorly with two rows of strong setae. Sternum, yellow-brown, mottled, with dark brown, mottled stripes around margin. Legs: trochanters yellow, with dark brown stripe; femur I dark yellow-brown, femora II-IV yellow, with distinct prolateral and retrolateral dark brown stripes; patellae, tibiae, and metatarsi yellow, with dark brown lateral stripes; tarsi yellow. Abdomen dark yellow-brown, mottled, with three clear white spots consisting of abundant white setae antero-laterally and three chevron-shaped stripes (the medial one clear, others indistinct) medially; venter with many irregular yellow-brown spots postero-medially. Spinnerets yellow-brown, mottled.

Epigyne (Fig. 12C, D ). Epigynal plate apple-shaped, with a triangular median septum. Epigynal hood broadly bell-shaped, arising from anteromedial atrial rim. Atrium relatively large, separated by the median septum. Atrial rim round, slightly sclerotized. Copulatory ducts very long, anterior part like a question mark, medial part C-shaped, posterior part slender tube-shaped, connecting with subposterior part of spermathecae. Glandular appendages long, near the base of fertilization ducts, shorter than 1/2 length of spermathecae. Spermathecae large, elongated, swollen, closely touching, posteriorly globular. Fertilization ducts relatively broad, nearly as long as 1/3 length of spermathecae, transversely extended.

Male. Unknown.

Distribution.

Known only from the type locality in Jiangxi Province, China (Fig. 13 ).

Figures

Figure 12. Synagelides triangulatus sp. nov., holotype female A habitus, dorsal view B same, ventral view C epigyne, ventral view D same, dorsal view. Abbreviations: AR - atrial rim, At - atrium, CD - copulatory duct, CO - copulatory opening, EH - epigynal hood, FD - fertilization duct, GA - glandular appendages, MS - median septum, Spe - spermatheca. Scale bars: 0.2 mm (A, B); 0.05 mm (C, D).

Figure 13. Records of Synagelides emangou sp. nov. from Gansu province; S. jinding sp. nov., S. serratus sp. nov., S. shuqiang sp. nov., and S. triangulatus sp. nov. from Jiangxi Province in China.