Araneus corrugis, Mi & Li, 2022

Mi, Xiaoqi & Li, Shuqiang, 2022, On eleven new species of the orb-weaver spider genus Araneus Clerck, 1757 (Araneae, Araneidae) from Xishuangbanna, Yunnan, China, ZooKeys 1137, pp. 75-108 : 75

Araneus corrugis sp. nov.

Fig. 9

Type material.

Holotype ♀ (IZCAS-Ar43107), China: Yunnan, Xishuangbanna, Mengla County, Menglun Township, Menglun Nature Reserve, Lüshilin Forest Park, limestone tropical seasonal rainforest (21°54.68'N, 101°16.95'E, ca 640 m), 10.VIII.2018 night, C. Wang leg. Paratype: 1♀ (IZCAS-Ar43108), XTBG, eastern part (21°54.07'N, 101°16.36'E, ca 540 m), 22.VII.2018, X.Q. Mi leg.

Etymology.

The specific name comes from the Latin word “corrugis”, meaning “wrinkled”, referring to the texture of the epigyne basally; adjective.

Diagnosis.

The new species resembles A. gratiolus Yin, Wang, Xie & Peng, 1990 in appearance, but it can be distinguished from the latter by the following: 1) distal part of the scape finger-like vs triangular ( Yin et al. 1990: figs 79, 80); 2) distal part of the scape not grooved vs grooved ( Yin et al. 1990: figs 79, 80); and 3) inner edge of the lateral plate straight in ventral view (arrows in Fig. 9A ) vs arcuate ( Yin et al. 1990: fig. 79).

Description.

Female (holotype, Fig. 9 ). Total length 5.20. Carapace 2.00 long, 1.70 wide. Abdomen 3.80 long, 3.20 wide. Clypeus 0.13 high. Eye sizes and interdistances: AME 0.18, ALE 0.13, PME 0.15, PLE 0.13, AME-AME 0.13, AME-ALE 0.13, PME-PME 0.10, PME-PLE 0.18, MOA length 0.38, anterior width 0.38, posterior width 0.35. Leg measurements: I 11.20 (3.00, 3.50, 3.60, 1.10), II 9.30 (2.70, 3.00, 2.70, 0.90), III 5.40 (1.70, 1.80, 1.30, 0.60), IV 9.10 (2.90, 3.00, 2.40, 0.80). Carapace pear-shaped, yellow, with pale setae, cervical groove distinct. Chelicerae yellowish brown, 4 promarginal and 3 retromarginal teeth. Endites almost rectangular, yellowish brown at base and paler distally, labium triangular, grayish brown, paler distally. Sternum cordiform, yellow, with dark setae. Legs yellow without annulus. Abdomen oval, rounded anteriorly, slightly pointed posteriorly, with 4 pairs of sigillae, yellow with white scaly spots anteriorly; venter yellow. Spinnerets yellow.

Epigyne (Fig. 9A-D ): scape exceeding beyond the epigastric furrow, broad and wrinkled at base, distal half finger-like; copulatory openings narrow, near lateral edges of scape base; copulatory ducts 2 times longer than the spermatheca diameter; spermathecae globular, touching each other.

Variation. Total length: ♀♀ 5.20-6.70.

Distribution.

Known only from type localities (Yunnan, China).

Figures

Figure 9. Araneus corrugis sp. nov. female holotype A epigyne, ventral view B ibid., lateral view C ibid., posterior view D vulva, posterior view E habitus, dorsal view F ibid., ventral view G ibid., lateral view. Scale bars: 0.1 mm (A-D); 1 mm (E-G).