Borboropactus longidens Tang & Li, 2010

Li, Cong-zheng, Yao, Yan-bin, Xiao, Yong-hong & Liu, Ke-ke, 2023, Two new thomisid species (Arachnida, Araneae, Thomisidae) from China and Vietnam, with the first descriptions of the males of Borboropactus longidens Tang & Li, 2010 and Stephanopis xiangzhouica Liu, 2022, ZooKeys 1159, pp. 169-187 : 169

publication ID	https://dx.doi.org/10.3897/zookeys.1159.102601
publication LSID	lsid:zoobank.org:pub:9B90D030-9C99-43ED-AF4D-B729CDB89D75
persistent identifier	https://treatment.plazi.org/id/204C8797-3379-5983-A4E9-D03825132EEB
treatment provided by	ZooKeys by Pensoft
scientific name	Borboropactus longidens Tang & Li, 2010
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Borboropactus longidens Tang & Li, 2010 View in CoL

Figs 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 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) GoogleMaps ; 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) GoogleMaps .

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 View Figure 1 , 2 View Figure 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 View Figure 3 ).

Description.

Male. Habitus as in Fig. 1A, B View Figure 1 . Total length 7.15, prosoma length 3.36, width 3.00, anteriorly narrowed to 0.41 × its maximum width. Eye diameters (Fig. 1C View Figure 1 ): 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 View Figure 1 ) with four promarginal teeth, three retromarginal teeth, including a vestige tooth, and four small denticles in-between the teeth. Endites (Fig. 1B View Figure 1 ) nearly quadrilateral, with dense setae on surface. Labium (Fig. 1B View Figure 1 ) rectangular, anteriorly with strong setae. Sternum (Fig. 1B View Figure 1 ) 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 View Figure 1 ): 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 View Figure 1 ) length 3.79, width 3.22, dorsally with abundant macrosetae on posterior part.

Colouration (Fig. 1A, B View Figure 1 ). 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 View Figure 1 , 2 View Figure 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 View Figure 3 . 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 View Figure 3 ): 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 View Figure 3 ) with five promarginal teeth, four retromarginal teeth, including a vestige tooth, and nine small denticles in-between teeth. Labium (Fig. 3B View Figure 3 ) wider than long. Legs (Fig. 3A-D, H View Figure 3 ) 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 View Figure 3 ): 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 View Figure 3 ) length 6.21, width 5.32.

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

Epigyne (Fig. 3I, J View Figure 3 ). 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 View Figure 10 ).