Raveniola rugosa, Li, Shuqiang & Zonstein, Sergei, 2015

Li, Shuqiang & Zonstein, Sergei, 2015, Eight new species of the spider genera Raveniola and Sinopesa from China and Vietnam (Araneae, Nemesiidae), ZooKeys 519, pp. 1-32 : 9-10

Taxon classification Animalia Araneae Nemesiidae

Raveniola rugosa sp. n. Figs 13, 14

Type material.

Holotype ♂ - CHINA: Yunnan Province, Lijiang County, Shigu Town, Shigu east [26°52.014'N, 100°13.588'E, elevation 2393 m], July 31 to August 4, 2007, X. Yu (IZCAS).

Etymology.

The specific name is taken from the Latin adjective “rugosus”, meaning “wrinkled” and refers to the wrinkled transition between embolus and bulb.

Diagnosis.

The new species is similar to Raveniola chayi sp. n. but can be distinguished by its embolus gradually curved to the tip (twisted in the latter species) and by the considerably better developed embolic ridges (Figs 7 A–C; cf.14 A–C). It can be distinguished from Raveniola montana , which also possesses embolic ridges on the bulb, by a much longer palpal tibia and a longer embolus (Figs 12 A–C; cf.14 A–C).

Description.

Male (holotype): TL 14.50, CL 6.15, CW 4.65, AL 6.25, AW 4.00. Eye diameters and interdistances: AME 0.20, ALE 0.24, PME 0.17, PLE 0.19, AME–AME 0.09, AME–ALE 0.04, PME–PME 0.36, PME–PLE 0.06. Leg lengths: I: 16.50 (4.60+2.25+4.25+3.10+2.30), II: 13.95 (4.10+1.60+3.55+2.55+2.15), III: 12.70 (3.75+1.25+2.75+2.70+2.25), IV: 16.95 (4.55+1.60+4.25+4.05+2.50). Venter as shown in Fig. 13G. Maxillae with numerous (ca. 35-40) cuspules. Prosoma, palps and legs reddish brown. Abdomen, including spinnerets, light brownish grey (Figs 13D, G). Metatarsus I very gently curved (nearly straight) as in Fig. 13E. PMS absent, apical segment of PLS digitiform (Fig. 13D, G). Palpal tibia slightly swollen at base and slightly arcuate; cymbium with six short, stout spines; bulb long, pyriform; embolus slightly and evenly bent, gradually tapering to a slender point (Figs 13 A–C, 14 A–C).

Female. Unknown.

Distribution.

The species is known only from the type locality.