Neoscona xiquanensis Barrion

Alberto T. Barrion, Aimee Lynn A. Barrion-Dupo, Josie Lynn A. Catindig, Sylvia C. Villareal, Ducheng Cai, Qianhua Yuan & Kong Luen Heong, 2016, NEW SPECIES OF SPIDERS (ARANEAE) FROM HAINAN ISLAND, CHINA, UPLB Museum Publications in Natural History 3, pp. 1-103 : 5

Neoscona xiquanensis Barrion , Barrion-

Dupo & Heong, new species [ Figure 3 A-I]

MALE. Holotype male, total length 9.10 mm. Cephalothorax length 5.00 mm, width 4.20 mm. Abdomen length 4.90 mm, width 3.65 mm.

Carapace. Brown except yellow brown cephalic posterior of the eye area. Fovea distinctly long and deep, about one-third thoracic width. Chelicerae yellowish gray, 2.5x longer than wide, base with three humps including the lateral condyle. Promargin with three and retromargin with four teeth. Subbasal tooth of retromargin the largest. Pedipalp brown with dark brown palpal organ and paracymbium. Maxillae and labium yellow brown with retrolateral of maxillae and apical margin of labium yellow. Sternum yellow with a white median longitudinal band, posterior end acutely pointed and sclerotized lateral extensions present between coxae II and III reaching ventrolateral side of carapace.

Eyes. In two rows. AER slightly longer than PER, both strongly recurved. Eye diameter (mm): AME (0.21)> ALE=PME (0.17)> PLE (0.14). Eye separation (mm): PME-PLE (0.54)> AME-ALE (0.34)> AME-AME (0.26)> PME-PME (0.14). Clypeus height narrow barely 0.66 AME diameter.

Legs. Relatively spinous, brown with a pair of subspherical yellow spots in the retrolateral of femur I, elongate longitudinal and transversely elongate yellow bands present in femur II, yellow posterior half of femur III and subbasal yellow band in tibia III and IV. Metatarsi III and IV with a subbasal and median yellow band. Spination in femur I 4-3 -3-5 and femur II 6-10 -5-5. Tibia II with 56 prolateral spines mostly short to peg-like. Leg formula 1-4-2-3.

Abdomen. Blackish brown, ovate with long yellow hairs dorsally, midanterior with a black dagger-like band. Dorsum with six pairs of brown rounded sigillae, the four median the largest. Venter whitish yellow anteriorly and black posteriorly with a pair of C-shaped band facing its other medially.

Palpal organ with anterior one-third of median apophysis narrow and sinuate, conductor shoe-like to bluntly rounded apically and with a small subbasal tooth, tip of tegular process blunt. Paracymbium strongly rounded apically. Midapex of palpal tibia moderately pointed with four long white setae. Patella with three very long spines.

FEMALE. Unknown.

Material Examined. Holotype male (coll. no. Li2011-01), CHINA, Hainan Island, Lingshui, Xiquan Village, 29 March 2011, ATBarrion, JLACatindig and SCVillareal.

Diagnostic Features. This species is very similar in facies to Neoscona vigilans (Blackwall, 1865) but differs from the latter in the following characters, namely, (1) number of prolateral spines in tibia II, (2) leg II and IV subequal in length, (3) shape of median apophysis, (4) tip of tegular apophysis, (5) number of long spines in the patella of pedipalp, and (6) structure of pedipalp’s tibia.

Etymology. The

from the type locality.

specific

epithet

is

derived

Figures

Figure 3 A-F. Neoscona xiquanensis Barrion, Barrion-Dupo & Heong, new species, male pedipalp (A), tip of tegular process (B), conductor (C), median apophysis (D), lateral (E) and ventrolateral (F) views of tibia.