Raveniola songi, Zonstein, Sergei & Marusik, Yuri M., 2012

Zonstein, Sergei & Marusik, Yuri M., 2012, A review of the genus Raveniola (Araneae, Nemesiidae) in China, with notes on allied genera and description of four new species from Yunnan, ZooKeys 211, pp. 71-99 : 79-80

Raveniola songi sp. n. Figs 1220283442

Types.

Holotype ♂ - CHINA: Yunnan Province, Sueshan Mt. Ridge, Shika Mts. 10-15 km W Zhongdian (approximately 27°48'N, 99°35'E), 3800-4300 m, 25.05-6.06.2005, coll. I. Shokhin & S. Murzin (IZAS). Paratypes. 11♂ with the same collecting data are shared between IZAS (2), MNHG (2), MNHN (1), NHML (1), TAU (4) and ZMMU (1).

Etymology. The specific name is given in honour and memory of Prof. Daxiang Song (宋大祥; 1935-2008), for his immense contribution to Chinese arachnological research.

Diagnosis.

Males of Raveniola songi sp. n.habitually resemble those of Raveniola shangrila sp. n.but unlike them possess small PMS; other distinctive features are shown above (cf. Figs 15, 16, 23 and 24).

Description.

Male (holotype). Body length 13.50. Colour in alcohol: carapace, chelicerae and legs I medium reddish brown; eye tubercle somewhat darker; sternum, labium, maxillae and legs II–IV even lighter reddish brown; abdomen light greyish brown with darker pattern consisting of a weak longitudinal median spot and few transverse fasciae dorsally, and small irregularly shaped spots laterally and ventrally; genital area, book-lungs and spinnerets pale yellowish brown.

Carapace (Fig. 12) 5.10 long, 4.24 wide; covered with moderately dense and thin semi-adpressed dark hairs. Eye diameters (AME, ALE, PLE, PME): 0.18(0.24), 0.24, 0.20, 0.20. Interdistances: AME–AME 0.15(0.10), ALE–AME 0.06(0.04), ALE–PLE 0.08, PLE–PME 0.02, PME–PME 0.30. Cheliceral furrow with 9 promarginal teeth and 4-5 mesobasal denticles. Labium (Fig. 20) 0.33 long, 0.77 wide. Maxillae with 24-26 cuspules arranged in triangle area. Sternum 2.40 long, 2.28 wide. Palp: 7.86 (3.16, 1.59, 2.31, -, 0.80). Leg I: 15.32 (4.38, 2.12, 3.48, 3.25, 2.09). Leg II: 13.73 (3.91, 1.86, 3.19, 2.77, 2.00). Leg III: 13.11 (3.47, 1.85, 2.40, 3.31, 2.08). Leg IV: 16.63 (4.40, 1.95, 3.39, 4.60, 2.29). Leg I: tibia incrassate, metatarsus slightly curved retroventrally (Fig. 28).

Spination. Palp: femur d0(1) –1–1– 1, pd0 –1– 1; patella p1-1; tibia d1 –1– 1, r0 –1(0)– 1, pv1 –1– 1, rv1 –1– 1; cymbium d2(4). Leg I: femur d1 –1–1– 1, pd0 –1– 1; rd 0 –0– 1; tibia p1 –1– 0, pv1-1; rv1 –1–M–M; metatarsus v0 –0– 2. Leg II: femur d1 –1–1– 1; pd1 –1– 1; patella p1-1; tibia p1 –1– 1, v1 –2–1(2)– 3; metatarsus p0 –1– 0; v1 –2– 2. Leg III: femur d1 –1–1– 1, pd1 –1– 1, rd1 –1– 1; patella p1-1, r1; tibia d1 –1– 1, p1 –1– 1, r1 –1– 1, v2 –2– 3; metatarsus d1 –1– 1, p1 –1– 1, r1 –1– 1, v2 –2– 3. Leg IV: femur d1 –1– 1 -1, pd1 –1– 1, rd1 –1– 1; patella p1, r1; tibia d1 –1– 1(0), p1 –1– 1, r1 –1– 1, v2 –2– 3; metatarsus pd1 –1– 1, p1 –1– 1, r1 –1– 1, v2 –2–2– 3. Patella I and tarsi I–IV aspinose.

Scopula: entire distal 2/3 and 1/2 on metatarsi I and II, respectively; entire on tarsi I and II, widely divided by setae on tarsus III; vestigial on tarsus IV. Paired claws on tarsi I-III and IV with 8-10 and 8-10 teeth per row, respectively. Trichobothria: 2 rows of 7-8 per row on tibiae, 8-11 on metatarsi, 8-9 on tarsi, 6 on cymbium.

Palpal tibia long, cymbium with few short spines (Fig. 34). Bulb without ridges; embolus long, acuminate and slightly twisted (Fig. 42).

Spinnerets. PMS: length 0.41; diameter 0.14. PLS: maximum diameter 0.46; length of basal, medial and apical segments 0.70, 0.44, 0.42; total length 1.56; apical segment short-digitiform.

Female unknown.

Variability.

Carapace length in males varies from 4.80 to 5.43 (n=12).

Distribution.

CHINA: Yunnan Province (Fig. 1).