Dipoena crescenta, B & B & B & Peng, 2019

B, Su-fang Yang, B, Muhammad Irfan, B, Ping Liu & Peng, Xian-Jin, 2019, Two new species of Dipoena Thorell, 1869 (Araneae, Theridiidae) from Wuling Mountains, China, Turkish Journal of Zoology 43 (6), pp. 598-608 : 598-605

publication ID	https://doi.org/ 10.3906/zoo-1907-27
persistent identifier	https://treatment.plazi.org/id/9E266C5C-FFEC-515F-FCC2-F924FF732DBD
treatment provided by	Felipe
scientific name	Dipoena crescenta
status	sp. nov.

Treatment

Dipoena crescenta View in CoL sp. nov. ( Figures 1–5 View Figure 1 View Figure 2 View Figure 3 View Figure 4 View Figure 5 and 11 View Figure 11 )

Type material. Holotype: ♂, CHINA, Chongqing, Youyang County, Taoyuan , 28°51493′N, 108°45287′E, alt. 1002 m, 23-vii-2017, GC Zhou & M Irfan leg. (HNU-CQ-IV-1719) . Paratypes: Chongqing: 2♂♂ 1♀ ,

YANG et al. / Turk J Zool same data as holotype (HNU-CQ-IV-1719); 1♀, Jinfo Mountains National Nature Reserve , Nanchuan District, Dayou Town, 28°59505′N, 107°20093′E, alt. 1021 m, 13- viii-2015, XJ Peng et al. leg. (HNU-CQ-IV-1508) ; 2♀♀, Youyang County, Taoyuan , 28°51235′N, 108°45910′E, alt. 987 m, 26-v-2017, ZG Huang, T Tian, GC Zhou leg. (HNU-CQ-IV-1711) ; 1♂, Youyang County, Taoyuan , 28°51214′N, 108°45620′E, alt. 973 m, 22-vii-2017, M Irfan & GC Zhou leg. (HNU-CQ-IV-1717) ; 2♀♀, Youyang County, Taoyuan , 28°51347′N, 108°45134′E, alt. 995 m, 23-vii-2017, M Irfan & GC Zhou leg. (HNU-CQ- IV-1718); Hunan : 1♀, Huaihua City , Huitong County, Tuanhe Town , Diaotang Village , Yingzuijie National Nature Reserves, 26°53174′N, 109°55329′E, alt. 263 m, 30-x-2017, Deng-qing Li, T Tian, GC Zhou leg. ( HNU- HN-IV-1769) ; 1♀, Shaoyang City , Chengbu County, Rulin Town , Daqiao Village, 26°20275′N, 110°16418′E, alt. 458 m, 8-xi-2017, Deng-qing Li, T Tian, GC Zhou leg. (HNU-HN-IV-1772) ; 1♂, Shaoyang City , Chengbu County, Danjiang Town , Taiping Village, 26°20353N, 110°14460E, alt. 510 m, 9-xi-2017, GC Zhou, DQ Li, T Tian leg. (HNU-HN-IV-1775) .

YANG et al. / Turk J Zool

Etymology. The specific name comes from the Latin “crescent” (meniscus), referring to the shape of the abdomen; adjective.

Diagnosis. The male of the new species resembles Dipoena calvata Gao & Li, 2014 ( Gao and Li, 2014, figs. 30–32), in having the smooth median apophysis and

YANG et al. / Turk J Zool slender embolus, but can be distinguished by: (1) embolus hook-shaped, extending above the tip of the conductor in ventral view ( Figures 1E, 1F View Figure 1 , 2B View Figure 2 , 3B View Figure 3 ), while needle-shaped, retained below the tip of the conductor in D. calvata ( Gao and Li, 2014, figs. 31A, 31B); (2) the base of the embolus helmet-shaped in ventral view ( Figures 1E View Figure 1 , 2B View Figure 2 , 3B View Figure 3 ), while near triangular in D. calvata ( Gao and Li, 2014, fig. 31A); (3) conductor short, without process in ventral view ( Figures 1E View Figure 1 , 2B View Figure 2 , 3B View Figure 3 ), while long, with process in D. calvata ( Gao and Li, 2014, fig. 31A). The female of the new species

YANG et al. / Turk J Zool resembles D. parki Chichkering, 1943 ( Levi, 1963, figs. 78–80), by the round epigynum, but can be distinguished by the following: (1) epigynum has a basal plate in ventral view ( Figures 4D View Figure 4 , 5A View Figure 5 ), while without basal plate in D. parki ( Levi, 1963, fig. 80); (2) spermathecae I slightly larger than spermathecae II in dorsal view ( Figures 4E View Figure 4 , 5B View Figure 5 ), while spermathecae I almost 2 times larger than spermathecae II in D. parki ( Levi, 1963, fig. 79); (3) the ridge curved in ventral view ( Figures 4D View Figure 4 , 5A View Figure 5 ), while straight in D. parki ( Levi, 1963, fig. 80).

Description. Male (holotype, Figures 1–3 View Figure 1 View Figure 2 View Figure 3 ): Total length 1.43. Cephalothorax 0.68 long, 0.67 wide; abdomen 0.99 long, 0.80 wide. Clypeus 0.33 high, black brown, median area slightly concave. Carapace pear-shaped ( Figure 1A View Figure 1 ), reddish brown. Ocular region slightly bulged, eyes with black bases. Fovea ( Figure 1A View Figure 1 ) circular and dark brown. Radial and cervical groove dark brown ( Figure 1A View Figure 1 ). Eye diameter and interdistances: AME 0.09, PME 0.06, ALE 0.06, PLE 0.06, AME–AME 0.09, AME– ALE 0.01, PME–PME 0.04, PME–PLE 0.05, AEWR 0.30, PEWR 0.53 ( Figure 1A View Figure 1 ). Chelicerae without tooth, brown. Endites somewhat petaloid, brown, labium fused with sternum, brown, distal area dark brown. Sternum scutiform, sparsely covered with hairs, brown with dark brown margin ( Figure 1C View Figure 1 ). Legs grayish brown, with dark gray annuli ( Figures 1B, 1C View Figure 1 ). Measurements of legs: I 2.43 (0.77, 0.84, 0.50, 0.32); II 2.00 (0.62, 0.66, 0.42, 0.30); III 1.61 (0.53, 0.49, 0.31, 0.28); IV 2.07 (0.69, 0.66, 0.43, 0.29). Leg formula: I, IV, II, III. Abdomen gourd-shaped, yellowish brown ( Figure 1A View Figure 1 ). Dorsum ( Figure 1A View Figure 1 ) with brown pattern, scattered with white spots, sparsely with slightly brown hairs; each side of median area with an

YANG et al. / Turk J Zool outgrowth on each side; sides with dark brown stripes. Ventral side brown ( Figure 1C View Figure 1 ), sparsely with brown hairs; posteriorly with a black pattern; sides with yellow and dark brown twills; spinnerets enclosed with a few small white spots, brown with short brown hairs.

Palp ( Figures 1D–1F View Figure 1 , 2 View Figure 2 , 3 View Figure 3 ): Embolus hook-shaped, extending above the tip of the conductor ( Figures 1E, 1F View Figure 1 , 2B, 2C View Figure 2 ). The base of the embolus helmet-shaped ( Figures 1E View Figure 1 , 2B View Figure 2 , 3B View Figure 3 ). Median apophysis wide, smooth, without protrusion ( Figures 1E View Figure 1 , 2B View Figure 2 ). Tip of the conductor short, arc-shaped ( Figures 1E View Figure 1 , 2B View Figure 2 , 3B View Figure 3 ). Theridiidae tegular apophysis knife-shaped ( Figures 1E View Figure 1 , 2B View Figure 2 ).

Female (one of the paratypes, HNU-CQ-IV-1719,

Figures 4 View Figure 4 and 5 View Figure 5 ): Total length 1.89. Cephalothorax 0.65 long, 0.70 wide; abdomen 1.64 long, 1.18 wide. Clypeus 0.19 high, dark brown, median area slightly concave. Carapace pear-shaped ( Figure 4A View Figure 4 ), dark brown, sparsely with white hairs, sides brown. Ocular region slightly bulged, eyes with black bases. Fovea ( Figure 4A View Figure 4 ) dark brown. Radial and cervical groove black brown ( Figure 4A View Figure 4 ). Eye diameter and interdistances: AME 0.07, PME 0.07, ALE 0.07, PLE 0.07, AME–AME 0.08, AME–ALE 0.01, PME–PME 0.06, PME–PLE 0.04, AEWR 0.32, PEWR 0.42 ( Figure 4A View Figure 4 ). Chelicerae without tooth, dark brown, hairs black. Endites somewhat petaloid, brown, labium fused with sternum, brown, with dark brown distal area, hairs thin and black, margin light black ( Figure 4C View Figure 4 ). Sternum scutiform, brown, hairs sparse and brown ( Figure 4C View Figure 4 ). Legs yellowish brown, with dark annuli, hairs brown ( Figures 4B, 4C View Figure 4 ). Measurements of legs: I 2.49 (0.82, 0.82, 0.54, 0.31); II 2.10 (0.64, 0.67, 0.45, 0.34); III 1.63 (0.52, 0.48, 0.32, 0.31); IV 2.28 (0.75, 0.75, 0.48, 0.30). Leg formula: I, IV, II, III. Abdomen pear-shaped, yellow ( Figure 4A View Figure 4 ). Dorsum ( Figure 4A View Figure 4 ) with brown patterns, with scattered white spots, hairs slightly brown and sparse; each side of median area with an outgrowth; terminal area with dark brown stripes. Ventral side ( Figure 4C View Figure 4 ) slightly yellowish brown, hairs short, brown and dense; each side with a longitudinal light band; sides with dark brown streaks. Spinnerets dark brown, enclosed with six white spots, hairs short brown and dense ( Figure 4C View Figure 4 ).

Epigynum ( Figures 4D, 4E View Figure 4 , 5A, 5B View Figure 5 ): Epigynum has a basal plate on posterior margin. Copulatory openings oval ( Figures 4D View Figure 4 , 5A View Figure 5 ). Copulatory ducts distinguishable

YANG et al. / Turk J Zool

( Figures 4E View Figure 4 , 5B View Figure 5 ). Spermathecae circular ( Figures 4E View Figure 4 , 5B View Figure 5 ). Fertilization ducts curved, extending toward the middle ( Figures 4E View Figure 4 , 5B View Figure 5 ).