Sinanapis longituba, Yucheng Lin & Shuqiang Li, 2012

Yucheng Lin & Shuqiang Li, 2012, Three new spider species of Anapidae (Araneae) from China, The Journal of Arachnology 40, pp. 159-166 : 165-166

Sinanapis longituba new species

Figs. 7–10

Type material.— Holotype ♂ ( IZCAS), CHINA: Hainan: male, Qiongzhong County, Mt. Limushan Nature Reserve (19°11'N, 109°44'E), elevation 655 m, 12 August 2007, S. Li and C. Wang. Paratypes: 3 ♂, 11 ♀ ( IZCAS), same data as for holotype .

Etymology.—Specific epithet is derived from Latin ‘‘longitubus’’—long-tube, referring to the presence of a long process on palpal patella of male; adjective.

Diagnosis.—The new species is similar to Sinanapis crassitarsus Wunderlich & Song 1995 and S. thaleri Ono 2009 in having similar body size, strong male leg I, modified cusps on metatarsus and tarsus I, and complicated patellar apophyses in the male (Figs. 7A–D, H; 8A, B), but can be distinguished from S. crassitarsus and S. thaleri by the presence of anterior median eyes (Fig. 7E), very long and sclerotized, rather than grater-like, patellar apophysis on the palp, conical bulb with coiled embolus in the male (Figs. 8A, B). Female (unknown in S. crassitarsus and S. thaleri ) can be easily recognized by the longer than wide book lung covers and the two coiled copulatory ducts encircled by spherical spermathecae (Figs. 9A–C).

Description.—Male (holotype): Total length 2.52. Carapace 1.20 long, 0.80 wide, 0.68 high. Clypeus 0.40 high. Sternum 0.90 long, 0.45 wide. Abdomen 1.20 long, 1.14 wide. Carapace red-brown, anterolateral depressions absent. Thoracic region modified with semiround pits, rugose at posterior margin; cephalic pars distinctly raised, smooth, with four setae on midline. Eight eyes in four diads, anterior median eyes smallest, anterior laterals largest, anterior median eyes separated by their diameter, posterior median eyes contiguous, larger slightly than posterior laterals in diameter. Lateral eyes adjacent. From dorsal view, anterior eye row straight, posterior eye row procurved. Chelicerae brown, with a proximally lateral knob, fang furrow with three isolated large promarginal teeth, one small retromarginal tooth and seven plumose setae posteriorly. Labral spur large, furcated at base. Sternum brown, modified with pits and reticulate. Legs brown-yellow, strong, femur I and tibia I swollen, tibia, metatarsus and tarsus of leg I with paired spurs ventrally; each patella distally with one dorsal spine and as well as on proximal of each tibia. Each tibia with four trichobothria. Leg measurements: I 4.26 (1.35, 0.48, 1.12, 0.53, 0.78); II 3.03 (0.90, 0.37, 0.71, 0.40, 0.65); III 2.15 (0.65, 0.25, 0.48, 0.30, 0.47); IV 2.57 (0.80, 0.27, 0.65, 0.36, 0.49). Leg formula: I-II-IV-III. Abdomen darkish, with a large trifoliate-light speckle on dorsum, dorsal scutum on rear, sclerotized spots on laterals. Ventral scutum present. Spinnerets with an annular sclerotized plate. Palp relatively large. Palpal trochanter subequal to two-thirds of palpal femur in length. Palpal femur swollen at one-third distally. Palpal patella with three apophyses, the retrolateral one very long and the prolateral two short. Palpal tibia without any apophysis. Palpal bulb simple, cone-shaped, without any apophyses. Embolus long, strongly sclerotized, coiled into two loops. Tegulum smooth and flat. Cymbium nearly funnelled, with long setae on the brim.

Female: Total length 2.43 (one of the paratypes). Carapace 1.12 long, 0.70 wide, 0.53 high. Clypeus 0.22 high. Sternum 0.87 long, 0.50 wide. Abdomen 1.30 long, 1.08 wide. Coloration and modification of body are same as in male, but abdominal dorsal scutum absent. Palp present and segmented. Leg chaetotaxy and eye pattern same as in male. Cephalic pars slightly lower than in male. Leg measurements: I 3.69 (1.15, 0.44, 0.95, 0.45, 0.70); II 2.70 (0.80, 0.33, 0.62, 0.35, 0.60); III 1.99 (0.55, 0.25, 0.43, 0.28, 0.48); IV 2.56 (0.78, 0.27, 0.61, 0.35, 0.55). Leg formula: I-II-IV-III. Abdominal patterns as in male. Ventral scutum modified by tiny stripes, with a pair of posterolateral corners. Book lung covers large, longer than wide. Spinneret area with an annular sclerotized plate. Spermathecae round, strongly sclerotized. Copulatory ducts long, coiled into two rings, opening at the posterior margin of epigynal area. Fertilization ducts short and straight, arising from the bottom of spermathecae.

Distribution.—Known only from the type locality (Fig. 10).