Cristatus makuensis, Irfan & Zhang & Peng, 2022

Irfan, Muhammad, Zhang, Zhi-Sheng & Peng, Xian-Jin, 2022, Survey of Linyphiidae (Arachnida: Araneae) spiders from Yunnan, China, Megataxa 8 (1), pp. 1-292 : 72-77

Cristatus makuensis sp. nov. (ḚNJRƦ)

Figures 78–82

Types. Holotype ♂, CHINA, Yunnan, Gongshan County, Dulongjiang Township, Maku , 27.68611°N, 98.29660°E, alt. 2097m, 02 September 2006, Peng Hu leg. (Hu060902) . Paratypes: 1♂ 1♀, same data as holotype (Hu060902); 2♂, Gongshan County, Dulongjiang Township , East bench of Dulongjiang at Baili Village, 28.00985°N, 98.32352°E, alt. 1670m, 3 November 2004, D. H. Kavanaugh leg. ; 1♀, Gongshan County, Dulongjiang Township , Xianjiudang Village, 27.92247°N, 98.33213°E, alt. 1634m, 4, 5 November 2004, Guo Tang leg. (Tang–04–07).

Etymology. This epithet derives from the type locality.

Diagnosis. See genus diagnosis.

Description. Male (holotype, Fig. 81A–C ): Total length: 1.66. Carapace 0.69 long, 0.56 wide; cephalic lobe 0.38 high, with eyes, clypeus and ocular region with lots of microsetae, ocular quad with a long thick macrosetae, light yellow; fovea, cervical and radial grooves distinct. Clypeus 0.25 high. Sternum wider than long, light yellow, sparsely covered with microsetae. Labium wider than long. Maxillae long, distal end broad with scopulae. Chelicerae sclerotized, pale, with three promarginal and four retromarginal teeth. Eyes: AER recurved, PER procurved, slightly wider than AER. Eye sizes and interdistances: AME 0.03, ALE 0.06, PME 0.05, PLE 0.05, AME–AME 0.02, PME–PME 0. 06, AME–ALE, 0.02, PME–PLE 0.04, AME–PME 0.08, ALE–ALE 0.15, PLE–PLE 0.16, ALE–PLE contiguous. Length of legs: I 2.65 (0.75, 0.86, 0.62, 0.42), II 2.49 (0.76, 0.78, 0.56, 0.39), III 2.01 (0.60, 0.62, 0.46, 0.33), IV 2.47 (0.69, 0.76, 0.60, 0.42). Leg formula I-II-IV-III. Tm I 0.28 and Tm IV 0.20. Patella with two spines. Tibial spines thick and long; tibial spine formula: 2-2-1-1. Abdomen 0.97 long, 0.58 wide, oval, pale, mid dorsally with a longitudinal grey band followed by two chevrons and a small black patch posteriorly, ventral side pale.

Palp ( Figs 78A–D , 79A, B ): Patella as long as tibia; tibia with two reterolateral and one dorsal trichobothria; reterolateral tibial apophysis sclerotized, slightly curved and pointing towards dorsal tibial apophysis; dorsal tibial apophysis black, sclerotized with teeth, anteriorly with a short black tooth; paracymbium sclerotized, hook-shaped, distal arm with a tuft of spines, tip with a small slightly curved projection; proximal end of reterolateral margin of cymbium with a row of thick spines; distal suprategular apophysis proximally broad, sclerotized, tip slightly curved and pointing towards the cymbium; tegulum with a tomb shaped transparent protegulum. Embolic division: radix sclerotized, broad and round; terminal apophysis short, not very conspicuous on unexpanded palp, with pointed end; embolus arises from inner lateral margin of the radix, long, distal portion forming a coiled spiral around the protegulum.

Female (one of paratypes, Fig. 81D, E ): Total length: 1.73. Carapace 0.69 long, 0.56 wide; cephalic region slightly elevated, yellow; fovea, cervical and radial grooves distinct, ocular region with long spines. Clypeus 0.15 high. Sternum longer than wide, yellowish–green, sparsely covered with microsetae. Labium wider than long. Maxillae long, distal end broad with scopulae. Chelicerae sclerotized, yellow, with three promarginal and four retromarginal teeth. Eyes: AER recurved, PER procurved, slightly wider than AER. Eye sizes and interdistances: AME 0.03, ALE 0.06, PME 0.06, PLE 0.06, AME–AME 0.02, PME–PME 0.05, AME–ALE, 0.01, PME–PLE 0.02, AME–PME 0.05, ALE–ALE 0.19, PLE–PLE 0.23, ALE–PLE contiguous. Length of legs: I 2.33 (0.64, 0.76, 0.56, 0.37), II 2.26 (0.62, 0.73, 0.55, 0.36), III 1.82 (0.49, 0.57, 0.47, 0.29), IV 2.25 (0.61, 0.72, 0.58, 0.34). Leg formula I-II-IV-III. Tm I 0.26 and Tm IV 0.19. Patella with 2 spines. Tibial spines thick and long; tibial spine formula: 2-2-1-1. Abdomen 1.04 long, 0.69 wide, oval, pale, mid dorsally with a longitudinal dark grey band followed by two chevrons and a small black patch posteriorly, ventral side pale.

Epigyne ( Fig. 80A–C ): Scapoid sclerotized, fingershaped, posterior margin almost touches the posterior margin of ventral plate; ventral plate transparent, wider than long. copulatory openings present at the junction of dorsal and ventral plate. Vulva: Dorsal plate wider than long; copulatory ducts simple, present mesally; spermathecae globular, separated by a distance of 2/3

of their diameter; fertilization ducts small, extending mesally.

Distribution. Known only from the type locality ( Fig. 82 ).

Genus Curtimeticus Zhao & Li, 2014 (ƉẨƦø)

Figures

FIGURE 78. Cristatus makuensis sp. nov., male palp of holotype. A prolateral view B retrolateral view C ventral view D dorsal view.

FIGURE 79. Cristatus makuensis sp. nov., male (one of paratype). A, B Embolic division.

FIGURE 80. Cristatus makuensis sp. nov., female (one of paratype). A, B Epigyne, ventral view C Vulva, dorsal view.

FIGURE 81. Cristatus makuensis sp. nov., male holotype (A–C) and female, one of paratypes (D, E). A, D Habitus, dorsal view B Habitus, lateral view C, E Habitus, ventral view.

FIGURE 82. Distribution of Cristatus gen. nov..