Xyphinus hwangi, Tong, Yanfeng & Li, Shuqiang, 2014

Tong, Yanfeng & Li, Shuqiang, 2014, A survey of oonopid spiders in Taiwan with descriptions of three new species, ZooKeys 396, pp. 67-86 : 72-74

Xyphinus hwangi sp. n. Figs 4-7

Material examined.

Holotype ♂ (IZCAS AR 27809): CHINA: Taiwan: Kaohsiung City, Shoushan Mountain, 29 June 2013, S. Li, G. Zheng & Y. Tong leg. Paratypes: same data as holotype, 3 ♂, 5 ♀ (SYNU-18); same data as holotype, 12 ♂, 23 ♀ (SYNU-36); same data as holotype, 2 ♂, 1 ♀ (SYNU-47).

Etymology.

The specific name is a patronym honoring Dr. Chung-Chi Hwang (National University of Kaohsiung), who is a leading taxonomist of terrestrial snails in Taiwan.

Diagnosis.

The new species is similar to Pseudotriaeris karschi (see Brignoli 1974), but can be distinguished by the long, slender and strongly curved ventral apophysis (va in Fig. 6F) in the male palp and the large nose-shaped protuberance (nos in Figs 6L, 7D) in the female epigastric area.

Description.

Male (holotype). Total length 1.87; carapace 0.81 length, 0.63 width; abdomen 0.99 length, 0.61 width. Habitus as in Fig. 4A, C, E. Carapace: orange, dorsal scutum yellow-brown, chelicerae, sternum, legs and ventral scutum light yellow. 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 (Fig. 4B, D). No fovea. Posterior pits lacking. Eyes six, ALE largest, PLE smallest; posterior eye row slightly recurved from above, straight from front. Clypeus with sinuous anterior margin; clypeus height about 1.5 times the diameter of anterior eyes (Figs 4G, 6A). Mouthparts: chelicerae toothless, with many small granules on the promargin (Fig. 6B, C, M). Endites with backwards folded ridge. Sternum smooth (Fig. 4F). Legs spineless. Abdomen: shape of abdomen normal, not overlapping the carapace. Dorsal scutum ovoid, smooth, nearly entirely covering the abdomen. Booklung covers ovoid, large. Pedicel tube ribbed. Scuto-pedicel region unmodified. Posterior spiracles connected by groove. Postepigastric scutum strongly sclerotized; spinneret scutum present as an incomplete ring. Genitalia: sperm pore oval, medium sized, situated at level of anterior spiracles. Palp (Figs 4 H–J, 6 D–I, 7 A–C): femur inserted near the middle of patella; patella about as long as femur; cymbium strongly protruding prolaterally; bulb with complicated apophyses, ventral apophysis very slender and strongly curved (va in Fig. 6F).

Female (paratype). Total length 1.84; carapace 0.81 length, 0.62 width; abdomen 0.95 length, 0.92 width. Habitus as in Fig. 5A, C, E. As in male except as noted. Endites unmodified (Fig. 5F). Postepigastric scutum rectangular, not fused to epigastric scutum, with long posteriorly directed lateral apodemes. Genitalia: with a large nose-shaped protuberance (nos in Figs 6L, 7D) at the middle of the anterior edge of the postepigastric scutum; in dorsal view, a thin stick-shape sclerite extending anteriorly (tss in Figs 5K, 7E).

Distribution.

Known only from the type locality.