Khorata vinhphuc Yao & li, 2018

Nie, Lei, Yao, Zhiyuan, Pham, Dinh-Sac & Li, Shuqiang, 2018, Five new species of the spider genus Khorata Huber, 2005 (Araneae: Pholcidae) from Vietnam, Zootaxa 4486 (4), pp. 480-496 : 487

Khorata vinhphuc Yao & li Sp. nov.

http://zoobank.org/urn:lsid:zoobank.org:act:3B9512CF-AF60-4AC9-80B4-41AB4252986C

Figs 5–6

Type material. Holotype: Male, Tam Dao National Park (21°28.417′N, 105°38.083′E, elevation 1009 m), Vinh Phuc, Vietnam, 7 June 2016, Q. Zhao and Z. Chen leg. Paratypes: 2 males and 3 females, same data as holotype.

Etymology. The specific name refers to the type locality, and is a noun in apposition.

Diagnosis. This species resembles K. ningming (see Zhang & Zhu 2009: 236, figs 8–15) with similar procursus ( Figs 5C–D ) but can be distinguished by more developed frontal apophyses on male chelicerae (arrows in Figs 6C– D ), by presence of pair of lateral projections posteriorly on epigynum (arrows in Figs 6A–B ) and by nearly triangular pore plates ( Fig. 6B ).

Description. Male (holotype): Total length 2.75 (2.88 with clypeus), carapace 0.91 long, 1.13 wide, opisthosoma 1.84 long, 1.16 wide. Leg I: – (5.60 + 0.47 + 5.63 + 8.95 + –), leg II: 14.69 (4.08 + 0.43 + 3.40 + 5.20 + 1.58), leg III: 11.06 (3.08 + 0.37 + 2.63 + 3.85 + 1.13), leg IV missing (see variation); tibia I L/d: 42. Habitus as in Figs 6E–F . Carapace yellowish, with black margins and narrow, dark median line; sternum black but yellowish medially. Legs brownish, but slightly whitish on distal parts of femora and tibiae, with distinct darker rings on subdistal parts of femora and tibiae. Opisthosoma yellowish, with large black spots. Distance PME-PME 0.16, diameter PME 0.14, distance PME-ALE 0.02, AME absent. Ocular area slightly elevated and separated from rest of carapace. Thoracic furrow shallow, but distinct. Clypeus unmodified. Sternum slightly wider than long (0.72/ 0.65). Chelicerae ( Figs 6C–D ) with pair of small proximo-lateral apophyses, pair of small distal apophyses on front-lateral surface, pair of strong frontal apophyses (arrows in Figs 6C–D ) provided with scales each, and pair of long, hooked frontal apophyses (distance between tips: 0.01). Pedipalps as in Figs 5A–D ; trochanter with short retrolateral apophysis and small ventral apophysis; femur with retrolateral apophysis; patella large; procursus simple proximally but complex distally ( Figs 5C–D ); bulb simple, no other projections except for embolus. Retrolateral trichobothria of tibia I at 7% proximally; legs with short vertical setae on metatarsi, without spines and curved setae; tarsus I with 12 distinct pseudosegments.

Female: Similar to male, habitus as in Figs 6G–H . Total length 3.50 (3.68 with clypeus), carapace 0.91 long, 1.13 wide, opisthosoma 2.59 long, 2.06 wide; tibia I: 4.75; tibia I L/d: 38. Distance PME-PME 0.12, diameter PME 0.13, distance PME-ALE 0.04, AME absent. Sternum slightly wider than long (0.75/0.69). Epigynum ( Fig. 6A ) yellowish, with brown marks laterally and pair of lateral projections posteriorly (arrows in Figs 6A–B ), without pockets. Vulva ( Fig. 6B ) with curved anterior arch and pair of large, nearly triangular pore plates.

Variation: In one male paratype: Leg I: 22.21 (5.30 + 0.45 + 5.28 + 8.55 + 2.63), Leg IV: 13.31 (3.93 + 0.40 + 3.17 + 4.88 + 0.93); in another male paratype: Tibia I: 4.98. Tibia I in the other female paratype (n = 1, leg I missing in another specimen): 4.70.

Natural History. The species was found on its irregular web between rocks.

Distribution. Vietnam (Vinh Phuc, type locality; Fig. 11 ).

Figures

FIGURE 5. Khorata vinhphuc Yao & Li sp. nov., holotype male. A–B. Pedipalp (A. Prolateral view; B. Retrolateral view); C– D. Distal part of procursus (C. Prolateral view; D. Retrolateral view). b = bulb, e = embolus, pr = procursus. Scale bars: 0.10 (A–B), 0.05 (C–D).

FIGURE 6. Khorata vinhphuc Yao & Li sp. nov., holotype male (C–F) and paratype female (A–B, G–H). A. Epigynum, ventral view, arrow points at lateral apophysis posteriorly; B. Vulva, dorsal view, arrow points at lateral apophysis posteriorly; C–D. Chelicerae (C. Frontal view; D. Lateral view; arrow points at strong frontal apophysis); E–H. Habitus (E, G. Dorsal view; F. Lateral view; H. Ventral view). da = distal apophysis, fa = frontal apophysis, pa = proximo-lateral apophysis, pp = pore plate. Scale bars: 0.10 (A–B), 0.05 (C–D), 0.50 (E–H).

FIGURE 11. Distribution records of new species of the genus Khorata from Vietnam. 1. Khorata bachma Yao & Li sp. nov.; 2. K. cucphuong Yao & Li sp. nov.; 3. K. vinhphuc Yao & Li sp. nov.; 4. K. palace Yao & Li sp. nov.; 5. K. quangbinh Yao & Li sp. nov.