Borboropactus brevidens, Tang & Li, 2010

Tang, Guo & Li, Shuqiang, 2010, 2369, Zootaxa 2369, pp. 1-68 : 8-12

Borboropactus brevidens sp. nov.

Figs 3–6

Type material: Holotype: ♀, China: Hainan: Lingshui Co., Diaoluoshan Mountains, Vacation Village (N18º43. 589', E109º52.026', alt. 937 m), 17 April 2009, G. Tang ( IZCAS, Tang_No. 213).

Paratype: 1 ♂, same data as holotype ( IZCAS) .

Etymology. The specific epithet is taken from the Latin adjective brevidens and means short-teeth like, referring to the shape of epigynal teeth, adjective.

Diagnosis. This new species is similar to B. edentatus sp. nov., but can be separated by the presence of a pair of epigynal teeth, vase-shaped epigynal median septum (calyx-shaped in B. edentatus ) in the female; and the DTA arising near RTA from dorsal side of cymbium (far from RTA and near the prolateral side of cymbium in B. edentatus ), embolus without basal modifications (fork-shaped in B. edentatus ) in the male.

Description. Female (holotype measured): Total length 6.50. Prosoma 3.30 long, 2.85 wide; Opisthosoma 3.20 long, 2.60 wide. Prosoma grayish brown, carapace covered with short white hairs. Clypeus with 2 thick setae. Eye measurements: AME 0.12; ALE 0.14; PME 0.13; PLE 0.15; AME–AME 0.12; AME–ALE 0.18; PME–PME 0.16; PME–PLE 0.30. MOA length 0.42 with front width 0.36 and back width 0.44. Chelicera, gnathecoxa, labium dark brown, chelicerae with 5 pro- and 4 retromarginal teeth, and 8 small denticles between the teeth. Sternum yellow. Femur I swollen medially, bears 3 spines. Tibiae I with 5 prolateral, 4 retrolateral thick spines, metatarsi I with 3 prolateral and 3 retrolateral spines. Leg formula: I, IV, III, II; leg measurements: legs I 10.20 (3.10, 4.40, 1.90, 0.80); II: 6.90 (2.10, 2.60, 1.40, 0.80); III: 7.20 (2.00, 2.60, 1.60, 1.00); IV: 7.70 (2.40, 2.60, 1.70, 1.00). Opithosoma grayish black, covered with short clavate hairs. Venter yellow.

Epigynum ( Figs 3 B–C, 6 C–D): Epigynum with a large anterior hood; median septum vase-shaped; epigynal teeth paired, arising bilaterally; copulatory ducts long, narrower than spermathecae; spermathecae twisted, convoluted; a pair of wrinkled chitinous lamellae cover the posterior part of spermathecae in the basal of vulva.

Male: Total length 4.90. Prosoma 2.70 long, 2.35 wide; Opisthosoma 2.40 long, 1.80 wide. Prosoma brown, carapace with white short hairs and a longitudinal black stripe. Clypeus with 2 thick setae. Eye measurements: AME 0.10; ALE 0.14; PME 0.14; PLE 0.15; AME–AME 0.10; AME–ALE 0.10; PME–PME 0.08; PME–PLE 0.22. MOA length 0.32 with front width 0.30 and back width 0.36. Chelicera dark brown with 5 pro- and 4 retromarginal teeth; gnathecoxa, labium brown. Sternum yellow. Femur I swollen medially, bears 3 spines. Tibiae I with 5 prolateral and 4 retrolateral spines. metatarsi I with 3 prolateral and 3 retrolateral spines. Leg formula: I, IV, II, III; leg measurements: I: 9.50 (3.00, 3.80, 1.90, 0.80); II: 6.50 (2.60, 2.00, 1.30, 0.60); III: 6.00 (1.70, 2.30, 1.30, 0.70); IV 6.80 (2.20, 2.30, 1.50, 0.80). Opithosoma yellowish brown. dorsum with small yellow spots and clavate hairs. Venter yellow.

Palp ( Figs 5 A–D, 6 A–B). Palp with VTA, RTA and DTA; tegulum with a soft, ear-shaped apophysis; conductor membranous; embolus with a wide base and a curved apex.

Distribution. China (Hainan). Only known from the type locality.

Remark. Both B. brevidens and B. edentatus were collected from a high altitude of tropical forest. They are different from other members of this genus by the light body pigment, presence of an extra tibial apophysis, slightly curved distal embolus (twisted and helix-shaped in other species), and epigynal hoods that anteriorly situated and distinctly separated with median septum (connected in other species).