Sinodromus perbrevis Yao & Liu, 2024

Wang, Zhong-jing, Yao, Yan-bin, Tang, Zi-ying, Li, Wen-hui, Liu, Ke-ke & Xu, Xiang, 2024, A new genus, Sinodromus gen. nov., with two new species and the first description of the female of Philodromus guiyang Long & Yu, 2022 (Arachnida, Araneae, Philodromidae) from China, ZooKeys 1221, pp. 279-296 : 279-296

Sinodromus perbrevis Yao & Liu sp. nov.

Figs 7 , 8 C Common name: 短华逍遥蛛

Type material.

China: Jiangxi Province: Holotype • ♀, Ji’an City, Jinggangshan County Level City , Ciping Town , Huangyangjie Scenic Spot , 26 ° 37 ' 21.6 " N, 114 ° 6 ' 21.6 " E, 958 m a. s. l., 5 April 2014, Z. Chen, K. Liu, Z. Meng, Y. Tang, X. Huang leg. (20140405, Phi- 06, ASM-JGSU) . Paratypes • 1 ♀, Ji’an City, Jinggangshan County Level City , JingZhu Mountain , 26 ° 29 ' 45.6 " N, 114 ° 4 ' 44.4 " E, 1146 m a. s. l., 20 December 2015, K. Liu, Z. Chen, Z. Meng, Q. Chen, S. Wu, P. Gong leg. (20151220, Phi- 06, ASM-JGSU) . Hunan Province • 1 ♀, Hengshan Mountain , 27 ° 16.504 ' N, 112 ° 42.304 ' E, 815 m a. s. l., 1–7 May 2007, G. Tang, P. Hu, Q. Wang leg. (Phi- 06, HNU) • 1 ♀, 1 May 2008, Q. Wang leg., other data same as previous (Phi- 06, HNU) .

Diagnosis.

The female of this species can be easily distinguished from S. fujianensis sp. nov. by the oval epigynal teeth (vs triangular) and the short copulatory ducts (vs relatively long) (cf. Figs 7 C, D , 8 C , 6 A, B , 8 B ).

Description.

Habitus as in Fig. 7 A, B . Total length 3.52. Carapace 1.34 long, 1.21 wide. Eye sizes and interdistances (Fig. 7 A ): AME 0.04, ALE 0.08, PME 0.03, PLE 0.06, AME – AME 0.18, AME – ALE 0.12, PME – PME 0.28, PME – PLE 0.2, AME – PME 0.12, AME – PLE 0.32, ALE – ALE 0.44, PLE – PLE 0.67, ALE – PLE 0.15. MOA 0.21 long, front width 0.25, back width 0.34. Chelicerae with three promarginal teeth and no retromarginal teeth. Leg (Fig. 7 A, B ) measurements: I and II missing; III 1.26 (0.42, 0.16, 0.28, 0.25, 0.15); IV 5.3 (1.82, 0.63, 1.18, 1.06, 0.61); spination: III Ti: r 2; Mt: d 1, r 1, v 8; IV Ti: v 2; Mt: r 2, v 6. Abdomen (Fig. 7 A, B ) 2.18 long, 0.79 wide.

Coloration (Fig. 7 A, B ). Carapace yellow, with three pairs of stripes, each one including many black spots, laterally with dark brown stripes. Chelicerae yellowish, with sparse black spots. Endites and labium yellow, with sparse black spots. Sternum yellowish to yellow, laterally with many black dots. Legs with many small black dots. Abdomen yellowish to brown, dorsally with small dense black dots; venter with a broad brown stripe medially.

Epigyne (Figs 7 C, D , 8 C ) nearly as long as wide. Epigynal teeth lamellar, ear-shaped, located antero-laterally. Atrium moderately large, anteromedially located. Median septum narrow, anteriorly subtriangular. Copulatory openings directed laterally, located on the sides of the antero-lateral part of median septum, not covered by epigynal teeth. Glandular appendages small, mastoid like, located at the origin of the copulatory ducts, directed anterolaterally. Copulatory ducts very short, strongly bent dorsally. Spermathecae widely separated, globular, with a short stalk. Glandular mounds slightly protruding, cap-like, located on antero-lateral part of spermathecae, directed laterally. Fertilization ducts nearly as long as 1 / 2 of spermathecal width, directed antero-laterally.

Male. Unknown.

Distribution.

Known from the type locality in Jiangxi, and from Hunan Province, China (Fig. 10 ).

Etymology.

The specific name comes from the Latin word perbrevis , referring to the very short copulatory ducts; adjective.

Figures

Figure 6. Sinodromus fujianensis sp. nov., female epigyne of paratype A epigyne, ventral view B vulva, dorsal view. Abbreviations: At – atrium, CD – copulatory duct, CO – copulatory opening, ET – epigynal tooth, FD – fertilization duct, GA – glandular appendage, GM – glandular mound, MS – median septum, Spe – spermatheca. Scale bars: 0.05 mm.

Figure 7. Sinodromus perbrevis sp. nov., female holotype A habitus, dorsal view B same, ventral view C epigyne, ventral view D vulva, dorsal view. Abbreviations: CD – copulatory duct, ET – epigynal tooth, FD – fertilization duct, GA – glandular appendage, GM – glandular mound, MS – median septum, Spe – spermatheca. Scale bars: 0.5 mm (A, B); 0.1 mm (C, D).

Figure 8. SEM pictures of epigynes, ventral view A Philodromus guiyang Long & Yu, 2022 B Sinodromus fujianensis sp. nov. C S. perbrevis sp. nov .. Abbreviations: At – atrium, CO – copulatory opening, ET – epigynal tooth, MS – median septum.

Figure 10. Distributional records of Philodromus guiyang Long & Yu, 2022 (black circles), Sinodromus fujianensis sp. nov. (green triangles) and S. perbrevis sp. nov. (red stars) from China.