Borboropactus longidens Tang & Li, 2010

Figs 1, 2, 3

Borboropactus longidens Tang & Li, 2010: 21, figs 15A-D, 16A, B (♀).

Material examined.

1 ♂, 1 ♀, China, Hainan, Ledong County, Jianfengling National Natural Reserve, Mingfenggu Scenic Spot, 18°44'25.87"N, 108°50'47.83"E, 1-31 May 2021, Yunhu Mo leg. (Tho-293, ASM-JGSU) ; 1 ♂, 2 ♀, Vietnam, Tam Dao National Park, Vinh Phuc, Vietnam Natural Forest, 21°29.55'N, 105°37.42'E, 1063 m, 12 September. 2007, Pham Dinh Sac leg. (IZCAS, examined by Yejie Lin) .

Diagnosis.

The male of this species resembles that of Borboropactus edentatus Tang & Li, 2010 (see Tang and Li 2010: 12, fig. 6A-D) by having the embolus lacking the spiralling tip, but can be easily distinguished by the round median apophysis (vs. oval in B. edentatus), the tibia with a horn-like retrolateral apophysis as long as the tibia (vs. triangular, shorter than tibia in B. edentatus), and lacking the dorsal apophysis (vs. present in B. edentatus) (Figs 1G-J, 2). The female of this new species differs from that of B. edentatus (see Tang and Li 2010: 12, fig. 7B, C) by the narrow median field (vs. lacking), the slender epigynal teeth (vs. lacking), and the L-shaped copulatory ducts (vs. oval) (Fig. 3I, J).

Description.

Male. Habitus as in Fig. 1A, B. Total length 7.15, prosoma length 3.36, width 3.00, anteriorly narrowed to 0.41 × its maximum width. Eye diameters (Fig. 1C): AME 0.16, ALE 0.17, PME 0.15, PLE 0.20; interdistances: AME-AME 0.12, AME-ALE 0.14, PME-PME 0.17, PME-PLE 0.31, AME-PME 0.21, AME-PLE 0.45, ALE-ALE 0.73, PLE-PLE 1.03, ALE-PLE 0.20. MOA 0.51 long, front width 0.43, back width 0.44. Chelicerae (Fig. 1D, E) with four promarginal teeth, three retromarginal teeth, including a vestige tooth, and four small denticles in-between the teeth. Endites (Fig. 1B) nearly quadrilateral, with dense setae on surface. Labium (Fig. 1B) rectangular, anteriorly with strong setae. Sternum (Fig. 1B) broadly oval, with dense setae around margin. Legs measurements: I 10.58 (3.1, 1.55, 3, 2.02, 0.91); II 7.45 (2.5, 0.88, 2.32, 1.19, 0.56); III 7.63 (1.88, 0.95, 2.11, 1.91, 0.78); IV 9.22 (2.01, 1.91, 2.01, 2.16, 1.13); spination (Fig. 1A, B, F): I Fe: p2, v2; Ti: d4, v10; Mt: d3, v6; II Pa: d1; Ti: d4, v10; Mt: d2, v6; III Fe: d1; Ti: d3; Mt: d3; IV: Fe: d2; Ti: d4; Mt: d3; cusps: I Fe: 8; II Fe: 1. Opisthosoma (Fig. 1A, B) length 3.79, width 3.22, dorsally with abundant macrosetae on posterior part.

Colouration (Fig. 1A, B). Prosoma yellow to dark brown, densely covered white feathery setae, with an approximate U-shaped yellowish marking medially and dark thin radial markings around the fovea. Chelicerae, endites, and labium yellow-brown. Sternum yellow. Legs from yellow to dark brown, mottled. Opisthosoma yellow to greyish black.

Palp (Figs 1G-J, 2). Palp with a relative long and strong retrolateral tibial apophysis (RTA), extending dorsally, as long as tibia in retrolateral view; median apophysis (MA) pear-shaped, located at submedian-retrolateral of tegulum; conductor (Con) translucent, with broad base and apex, nearly as long as 1/3 of tegulum; embolus (Em) flatted-shaped, slightly less than tegular length, originating at the 6 o’clock position of tegulum, with a membranous anterior part and spine-like apex.

Female. Habitus as in Fig. 3A-D. As in male except as follows. Total length 10.67, prosoma length 4.46, width 4.32, anteriorly narrowed to 0.44 × its maximum width. Eye diameters (Fig. 3E): AME 0.16, ALE 0.19, PME 0.17, PLE 0.20; interdistances: AME-AME 0.15, AME-ALE 0.27, PME-PME 0.24, PME-PLE 0.47, AME-PME 0.34, AME-PLE 0.68, ALE-ALE 0.99, PLE-PLE 1.44, ALE-PLE 0.36. MOA 0.64 long, front width 0.45, back width 0.54. Chelicerae (Fig. 3F, G) with five promarginal teeth, four retromarginal teeth, including a vestige tooth, and nine small denticles in-between teeth. Labium (Fig. 3B) wider than long. Legs (Fig. 3A-D, H) measurements: I 10.91 (3.45, 1.35, 3.35, 2.01, 0.75); II 8.73 (2.5, 1.25, 2.41, 1.88, 0.69); III 9.95 (2.67, 1.11, 2.5, 2.53, 1.14); IV 10.3 (2.75, 1.52, 2.38, 2.44, 1.21); spination (Fig. 3A-D, H): I Fe: p2; Ti: v11; Mt: d3, v6; II Ti: d3, v9; Mt: d3, v6; III Fe: d1; Ti: d4; Mt: d3; cusps: I Fe: 18; II Fe: 1; IV Fe: 1. Opisthosoma (Fig. 3C, D) length 6.21, width 5.32.

Colouration (Fig. 3A-D). Prosoma medially with a fine dark mark. Chelicerae, endites, and labium red-brown. Opisthosoma white to dark brown.

Epigyne (Fig. 3I, J). Median field (MF) flask-like, subposterior part broader than other parts; epigynal teeth (ET) very long, as long as 1/2 of median field, arising median-bilaterally; copulatory openings (CO) arising from anterior part of maximum median field; copulatory ducts (CD) broad, wider than spermathecae, both ends swollen, sloping C-shaped, located at median of vulva, anterior part widely separated by its maximum width, and posterior part are approaching each other; spermathecae (Sp) C-shaped, median part have a constriction, posterior part close touching, both ends slightly swollen.

Distribution.

Known from China (Hainan) and Vietnam (Fig. 10).