Oxytate palmata Xu, 2017, sp. nov.
Creators: name: Xu, Xiang
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Thomisidae
Oxytate
Oxytate palmata

description: Oxytate palmata sp. nov.
Figs 3 ̄6
Material examined: Holotype: male, CHINA: Guangxi Province: Chongzuo City, Jiangzhou District, Zuozhou Town, Guanghe Village, Nongxue, 22.600°N, 107.405°E, 252 m, 5 September 2015 (HNU).
Paratypes: 3 males and 8 females, CHINA: Guangxi Province: Chongzuo City, Jiangzhou District: 1 male, 1 female same data as holotype (HNU); 1 male, Zuozhou Town, Guanghe Village, Nongtan, 22.568°N, 107.405°E, 296 m, 30 August 2015; 1 male and 1 female, Tuolu Town, Tuobai Village, Longquantun, Nongquan, 22.540°N, 107.454°E, 145 m, 10 September 2015; 1 female, Zuozhou Town, Guanghe Village, Pairu, 22.582°N, 107.428°E, 226 m, 3 September 2015; 1 female, Zuozhou Town, Guanghe Village, Hecuntun, Nongyao, 22°.605N, 107.428°E, 224 m, 9 September 2015; 1 female, Zuozhou Town, Guanghe village, Longmitun, Nongxing, 22.570°N, 107.438°E, 272 m, 7 September 2015; 3 females, Zuozhou Town, Guanghe village, Hecuntun, Nongteng, 22.585°N, 107.424°E, 235 m, 4 September 2015. All these specimens were collected by Bing Zhou, Wang Liu, Jihe Liu, Qu Cai, Xianfeng Huang and Da Li and they are deposited in Hunan Normal University (HNU).
Etymology: The specific name is derived from the Latin adjective “palmatus”, referring to the palmate tip in retrolateral tibial apophysis (RTA) of the male palp (Figs 3B ̄D, 5).
Diagnosis: Males of the new species resemble Oxytate forcipatus Zhang & Yin, 1998 and O. placentiformis Wang et al., 2012 in having the small hook-shaped ventral tibial apophysis (VTA), but can be clearly distinguished by the palmate tip of retrolateral tibial apophysis (RTA) and the curved embolus (EM) (Figs 3B ̄D, 5). Females can be distinguished from other members of this genus by the shape of the copulatory duct (CD) and the spermathecae (Spm).
Description. Male (Figs 3 ̄6). Total length 4.27. Prosoma 1.49 long, 1.67 wide; opisthosoma 2.67 long, 0.74 wide. Eyes (Fig. 3A): circular, lateral eyes on tubercles; diameters: AME 0.04, ALE 0.09, PME 0.05, PLE 0.08; AME–AME 0.07, AME–ALE 0.13, PME–PME 0.07, PME–PLE 0.21. MOA, 0.15 length, wider in back than in front (0.16, 0.15). Carapace yellow brown (Fig. 3A), smooth, with inconspicuous cervical groove and fovea. Eye field (Fig. 3A), arc-shaped, without setae. Chelicerae yellowish brown, without tooth. Edites yellowish brown, smooth, longer than wide, with short, scattered setae. Labium yellowish brown, oval. Sternum yellowish white, shield-shaped, surface smooth, with few setae. Measurements of legs: I 7.96 (2.37, 0.76, 2.25, 1.74, 0.84); II 8.34 (2.55, 0.83, 2.32, 1.64, 1.00); III 3.95 (1.03, 0.37, 1.14, 0.84, 0.57); IV 3.66 (1.21, 0.32, 0.91, 0.70, 0.52). Leg formula: II, I, III, IV. Leg spination: I Fe 4223, Pa 2110, Ti 2446, Mt 0226; II Fe 3110, Pa 2100, Ti 2336, Mt 0226; III Fe 3100, Pa 2000, Ti 3210, Mt 1111; IV Fe 3100, Pa 2000, Ti 3110, Mt 0 111. Abdomen much longer than wide (Fig. 3A), dorsum yellow, with abundant silver spots in dorsal view, two groups of 2 inconspicuous patches and two longitudinal strips on posterior part and regular transverse rows of strong spines on posterior part. Spinnerets yellow-brown, stout, with abundant setae. Palp (Figs 3B ̄D, 5). Retrolateral tibial apophysis (RTA) with a palmate tip and many regular, fine ridges. Ventral tibial apophysis (VTA), developed well, with a small hook-shaped tip. Embolus (EM), short and curved.
Female (Figs 4, 6). Total length 4.97, carapace length 1.65, carapace width 1.74, abdomen length 3.24, abdomen width 0.89. Eyes (Fig. 4A) diameters: AME 0.04, ALE 0.07, PME 0.04, PLE 0.05; AME–AME 0.10, AME–ALE 0.19, PME–PME 0.12, PME–PLE 0.29. MOA, 0.18 length, wider in back than in front (0.17, 0.15). Abdomen (Fig. 4A), dorsum silver, with one longitudinal median gray strip in anterior half. Measurements of legs: I 8.48 (2.61, 0.76, 2.50, 1.59, 1.02); II 8.27 (2.51, 0.73, 2.51, 1.58, 0.94); III 4.16 (1.03, 0.47, 1.18, 0.93, 0.55); IV 3.94 (1.32, 0.40, 0.95, 0.75, 0.52). Leg formula: I, II, III, IV. Leg spination: Pedipalp Fe 1100, Pa 2100, Ti 2110, Ta 2420; I Fe 4203, Pa 2000, Ti 2108, Mt 0 118, Ta 0600; II Fe 4200, Pa 2000, Ti 2108, Mt 0 118, Ta 0600; III Fe 2101, Pa 2000, Ti 2201, Mt 0220; IV Pa 2000, Ti 2000, Mt 6222, Ta 3000. Epigynum (Figs 4C, D, 6). Epigynum, deeply divided by anterior hood; copulatory opening (CO), relatively narrow; copulatory duct (CD), anterior part slender, median part curved outward in dorsal view, posterior part leading forward into spermathecae (Spm); Spm, nearly round. Fertilization ducts (FD) short.
Distribution. Known only from Guangxi province, China.
description: Published as part of Xu, Xiang, 2017, Two new species of the genus Oxytate from China (Araneae: Thomisidae), pp. 193-200 in Zootaxa 4320 (1) on pages 194-199, DOI: 10.11646/zootaxa.4320.1.12, http://zenodo.org/record/891669