Xyphinus pakse, Tong, Yanfeng & Li, Shuqiang, 2013

Tong, Yanfeng & Li, Shuqiang, 2013, Six new species of oonopid spiders from Champasak, Laos (Araneae, Oonopidae), Zootaxa 3709 (1), pp. 71-88 : 85-87

Xyphinus pakse sp. nov.

Figures 11 , 12

Type material: Holotype: Male ( IZCAS AR 19394), Laos, Champasak Province, Pakse , Phou Salao, 15º05.284'N, 105º48.671'E, elevation 242 meters, November 15, 2012, leg. S. Li.

Etymology: The specific name is a noun in apposition taken from the type locality.

Diagnosis: The new species is similar to X. abanghamidi Deeleman-Reinhold, 1987 , but can be distinguished by the finely microsculpture on anterior surface of male palpal patella and tibia; the very strong, black setae at distal end of male cymbium and the complicated apophyses on palpal bulb.

Description: Male (holotype). Carapace yellow, dorsal scutum yellow-brown, chelicerae, sternum, legs and ventral scutum light yellow. Body length 1.72; carapace 0.79 length, 0.66 width; abdomen 0.92 length, 0.55 width. Habitus as in Figs 11 A, B. Carapace dorsally smooth, covered with rows of short hairs; sides finely reticulate; carapace margin with two rows of small denticles on either side and some larger denticles on the posterior slope ( Figs 11 C, D). No fovea. Posterior pits lacking. Eyes six, ALE largest, PLE smallest; posterior eye row slightly recurved from above, procurved from front. Clypeus with sinuous anterior margin; clypeus height about 2.5 times the diameter of anterior eyes ( Fig. 11 E). Chelicerae teethless, with finely microsculpture on the promargin ( Fig. 11 G). Endites with apical rim ( Fig. 11 I). Sternum smooth. Legs spineless. Shape of abdomen normal, not overlapping the carapace ( Fig. 11 B). Dorsal scutum ovoid, smooth, covering nearly entirely abdominal length. Booklung covers ovoid, large. Pedicel tube ribbed, scuto-pedicel region and anterior part of dorsal scutum with many small denticles ( Fig. 11 H). Sperm pore oval, medium sized, situated at level of anterior spiracles. Postepigastric scutum strongly sclerotized; spinneret scutum present, incomplete ring. Palp ( Figs 11 J–L, 12A–C): femur inserted near the middle of patella; patella and tibia with finely microsculpture on anterior surface; cymbium strongly elongated prolaterally, with two short, black, very strong setae at distal end; bulb with complicated apophyses.

Female: Unknown.

Distribution: Known only from the type locality.

Figures

FIGURE 11. Xyphinus pakse sp. nov., male. A, B. Habitus, dorsal and lateral views; C – F, I. Prosoma, dorsal, lateral, anterior, posterior and ventral views; G. Left chelicera, frontal view; H. Abdomen, ventral view; J – L. Left palp, prolateral, retrolateral and dorsal views. Scales: A – F, H, I, = 0.4 mm; G = 0.1 mm; J – L = 0.1 mm.

FIGURE 12. Xyphinus pakse sp. nov., male. A – C. Left palp, prolateral, dorsal and retrolateral views. Scales: 0.1 mm.