Ordgarius, Keyserling, 1886

Lin, Yejie, Zhao, Huifeng, Koh, Joseph K H & Li, Shuqiang, 2022, Taxonomy notes on twenty-eight spider species (Arachnida: Araneae) from Asia, Zoological Systematics 47 (3), pp. 198-270 : 201-204

Ordgarius bo Lin & Li, sp. nov. ( Figs 2 , 5A–B )

Diagnosis. This new species can be distinguished from other Ordgarius species by the long horns on the middle of the carapace and the ratio of the length of the hood to the length of the scape is almost 1: 8.

Description. Female (holotype, Figs 5A–B ). Total length 7.60. Carapace 3.73 long, 3.39 wide. Abdomen 4.29 long, 8.02 wide. Carapace pear shaped, dark brown, with pale setae and black spots, middle with 6 horns arranged in 3 rows of 1, 1, 4. Chelicerae dark brown, with 4 promarginal teeth, 6 denticles at middle and 5 retromarginal teeth. Endites and labium pale yellow, almost square. Labium triangular. Sternum white. Eye sizes and interdistances: AME 0.12, ALE 0.11, PME 0.19, PLE 0.13, AME–AME 0.24, PME–PME 0.32, PME–PLE 1.00. Legs white with brown pattern. Leg measurements: I 12.85 (3.16, 4.97, 3.89, 0.83), II 13.02 (3.43, 4.89, 3.87, 0.83), III 6.28 (2.00, 2.35, 1.37, 0.56), IV 7.94 (2.61, 3.07, 1.70, 0.56). Abdomen triangular, yellow brown to yellow, with white setae. Spinnerets dark brown.

Epigyne ( Fig. 2 ) about 1.5 times wider than long with rimmed scape and hood; copulatory opening concave, located posteriorly, close to base of scape; copulatory duct short and robust; spermathecae large, about 3 times longer than copulatory duct, oval, touching each other.

Male. Unknown.

Material examined. Holotype ♀ (IZCAS-Ar43244), China: Yunnan, Xishuangbanna Dai Autonomous Prefecture, Mengla County, Menglun Township , Mane Village (21.9309°N, 101.2261°E), 27 February 2022, Y. Li leg.

Distribution. Known only from the type locality.

Etymology. The species name ‘ bo ’ is derived from an ancient Chinese legend: it was an animal similar to the unicorn, reminiscent of the long horn on carapace of this new species; noun (name) in apposition.

Figures

Figure 2. Ordgarius bo Lin & Li, sp. nov., holotype female. A. Epigyne, ventral view; B. Vulva, dorsal view. Abbreviations: CD— copulatory duct; CO—copulatory opening; FD—fertilization duct; H—hood; S—spermatheca; Sc—scape. Scale bars=0.1mm.

Figure 5. Habitus of Ordgarius species, dorsal view (A, C) and lateral view (B, D). A–B. O. bo Lin & Li, sp. nov.; C–D. O. liyuanba Lin & Li, sp. nov. Scale bars=1.0mm.