Wolongia bicruris Wan & Peng, 2013, new species
Creators: name: Wan, Jin-Long
name: Peng, Xian-Jin
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Tetragnathidae
Wolongia
Wolongia bicruris

description: Wolongia bicruris new species
(Figs 7–10, 35)
Type material: Holotype: male, CHINA, Yunnan, Fugong County, Yaping, 3 km up Shibali, 27.1775°N, 98.7550°E, 2527 m, 4 May 2004, Heng-mei Yan, Guang-xu Peng (HNU-20040504-2).
Paratypes: CHINA, Yunnan: 7 females, same data as holotype; 1 female, Lushui County, Luomumuo Township, 27.16784°N, 98.71782°E, 2682 m, 3 May 2004, Guang-xu Peng (HNU-20040503-2).
Etymology. The specific name comes from the Latin adjective “ bicruris ”, meaning “dichotomous”, and refers to the shape of the tip of cymbial ectobasal process.
Diagnosis. This species can be distinguished from other Wolongia species by the combination of the following characters: 1) femur I with several rows of short median macrosetae prolaterally and ventrally (Figs 3 C, F; 6A–B); 2) cymbial base with a denticle retrolaterally (Figs 3 D, 5B); 3) cymbial ectobasal process with one bifurcated tip (Figs 3 B, D–E; 5A–C); 4) anterior side of epigynum with one pair of oblong depressions in ventral view (Figs 4 C, 6D); 5) spermathecae strongly sclerotized (Figs 4 B, D; 6E–F). Males of this species are similar to W. mutica n. sp. in having a similar denticle at the base of cymbium retrolaterally (Figs 3 D, 5B, 19C, 21B) and similar location of the conductor and embolus on the genital bulb (Figs 3 B, 5A, 19B, 21A), but can be distinguished from the latter by: 1) prolateral and ventral surface of femur I with several rows of short median macrosetae which is absent in W. mutica n. sp.; 2. cymbial ectobasal process with one bifurcated terminal versus robust terminal in W. mutica n. sp. (Figs 19 B–D, 21A–C).
Description. Male (holotype): Total length 1.92. Cephalothorax 0.85 long, 0.75 wide. Abdomen 1.15 long, 1.10 wide. Carapace black-brown, with a yellow blotch centrally. AME 0.06, ALE 0.08, PME 0.08, PLE 0.08, AME-AME=AME-ALE (0.05), PME-PME>PME-PLE (0.09>0.05), LMOA 0.19, AWMOA 0.20, PWMOA 0.21. Clypeus 0.10. Chelicerae brown, with 5 retromarginal teeth (Figs 1 A, 5D). Labium black-brown, width 0.20, length 0.10. Coxae black-brown. Legs brown. Femur I with several rows of short median macrosetae prolaterally and ventrally (Figs 3 C, F; 6A–B). Leg measurements: I 5.65 (1.61, 1.85, 1.58, 0.61), II 4.22 (1.25, 1.40, 1.08, 0.49), III 2.40 (0.75, 0.74, 0.56, 0.35), IV 3.69 (1.05, 1.03, 0.85, 0.76). Abdomen oval, widest medially. Dorsum yellowish, with a black-brown longitudinal median stripe and six pairs of white diagonal stripe-shaped spots along the margins of the median stripe (Fig. 3 A). Venter dark-brown, with one pair of white symmetrical longitudinal stripes. Cymbial base with one thin denticle retrolaterally (Figs 3 D, 5B); cymbial ectobasal process with one bifurcated terminal (Figs 3 B, D–E; 5A–C); tip of conductor approximately pointing to the position of 1:00 o’clock in the ventral view (Figs 3 B, 5A); conductor and embolus almost covering the whole genital bulb in ventral view (Figs 3 B, 5A).
Female (paratype): Total length 2.50. Cephalothorax 0.99 long, 0.81 wide. Abdomen 1.71 long, 1.44 wide. General appearance are different from that of male. Carapace brown, with black margins and a dark-brown cephalic region. AME 0.09, ALE 0.10, PME 0.10, PLE 0.09, AME-AME>AME-ALE (0.05>0.04), PME- PME=PME-PLE (0.06), LMOA 0.25, AWMOA 0.20, PWMOA 0.23. Clypeus 0.08. Chelicerae black brown, with 5 retromarginal teeth. Labium black, width 0.25, length 0.06. Coxae black. Legs black-brown. Leg measurements: I 4.62 (1.30, 1.53, 1.15, 0.64), II 3.52 (1.00, 1.12, 0.86, 0.54), III 2.32 (0.82, 0.65, 0.46, 0.39), IV 2.99 (0.93, 0.95, 0.71, 0.40). Abdomen oval, widest medially. Dorsum silvery-white, with a longitudinal median stripe and a pair of large black spots posteriorly; anterior half of the stripe black, posterior half brown with many small white spots (Fig. 4 A). Venter black, with a pair of white longitudinal stripes. Epigynum with small atrium (Figs 4 C, 6D); anterior side of epigynum with one pair of oblong depressions in ventral view (Figs 4 C, 6D); spermathecae large and strongly sclerotized (Figs 4 B, D; 6E–F); copulatory ducts short (Figs 4 D, 6F).
Variation. Females, total length 2.36–2.50 (n=7).
Distribution. China (Yunnan).
description: Published as part of Wan, Jin-Long & Peng, Xian-Jin, 2013, The spiders of the genus Wolongia Zhu, Kim & Song, 1997 from China (Araneae: Tetragnathidae), pp. 87-134 in Zootaxa 3691 (1) on pages 89-90, DOI: 10.11646/zootaxa.3691.1.3, http://zenodo.org/record/247642