Cirrosus atrocaudatus Zhao & Li, 2014

Irfan, Muhammad, Zhang, Zhi-Sheng & Peng, Xian-Jin, 2022, Survey of Linyphiidae (Arachnida: Araneae) spiders from Yunnan, China, Megataxa 8 (1), pp. 1-292 : 58-69

Cirrosus atrocaudatus Zhao & Li, 2014 (XÃBẼƦ) Figures 61–63

Cirrosus atrocaudatus Zhao & Li, 2014 b: 15 , figs 20A–D, 21A–E, 22A–F, 23A–D (Dmf).

Material examined. 1♀, CHINA, Yunnan, Fugong County, Lumadeng Township , Shibali forest station trap

Types. Holotype ♂, CHINA, Yunnan, Gongshan County, Bingzhongluo Township, Gemalaka , 27.97670°N, 98.47810°E, alt. 3750 m 22 August 2006, Peng Hu leg. (Hu060822) . Paratypes: 1♀, same data as holotype (Hu 060822) ; 2♀, Fugong County, Lishadi Township , Shibali , 27.10520°N, 98.77980°E, alt. 2530m, 4, 6, 8, 9, 10 August 2005, Guo Tang leg. (Tang –05–02); 1♂, Gongshan County , Cikai Township, south side of the tunnel between Gongshan and Kongdang, 27.77023°N, 98.44648°E, alt. 3360m, 13 December 2004, Hong-bin Liang and V. F. Lee leg. ( VFL –04–0028); 1 ♂ 1♀, Gongshan County, Qiqi Dongshaofang , 27.69521°N, 98.48514°E, alt. 3208m, 29 September 2007, Xian-jin Peng leg. (20070929) ; 1♀, Longling County, Longjiang Township, Xiaoheishan Nature Reserve, 24.83671°N, 98.76185°E, alt. 2067m, hand collecting in a big log, 28 May 2005, Heng-mei Yan and Guo Ke-ji leg. ( CKJ029 ) ; 1♀, Fugong County, Lumadeng Township, Yaping Village, 5 km, 27.14497°N, 98.81463°E, alt. 2000m, 7 May 2004, Heng-mei Yan leg. (20040507–3); 1♂, Fugong County, Lumadeng Township , Yaping Village , Yaping Yakou, 12 km, rock, bank, bamboo, 27.20658°N, 98.21782°E, alt. 3280– 3100m, 8 May 2004, Heng-mei Yan leg. (20040508) .

Etymology. This epithet derives from the Latin adjective “ denticulata ”, meaning “tooth” and refers to the embolic division with teeth in male palp.

Diagnosis. This new species resembles Collinsia inerrans (O. Pickard-Cambridge, 1885) in having the similar distal suprategular apophysis, tibia with a triangular apophysis in palp ( Figs 64B, D , 66D ); epigyne ventral plate with lateral lobes ( Figs 65A–C , 66B, C ), but can be distinguished by the distal end of proximal cymbial apophysis relatively narrow with pointed end in C. denticulata sp. nov. ( Figs 64B , 66D ), whereas relatively broad with blunt end in C. inerrans ( Fig. 69B ). The inner margin of distal arm of paracymbium with broad lower projection, with blunt tip pointing towards the proximal cymbial apophysis in C. denticulata sp. nov. ( Figs 64B, C , 66D ), whereas inner margin slightly projecting out; with curved blunt tip pointing towards the tibia in C. inerrans ( Fig. 68B ). Embolus longer than wide, proximal end slightly curved and pointing towards the embolic division in C. denticulata sp. nov. ( Figs 64A–C , 66A, D ), whereas wider than long, projecting above the apex of cymbium in C. inerrans ( Fig. 68A–C ). Embolic division wider than long, covered with teeth, mesally grooved in C. denticulata sp. nov. ( Figs 64A– C , 66A, D ), whereas embolic division possesses two long projections with teeth in C. inerrans ( Fig. 68A–C ). Spermathecae elliptical, pointing towards the lateral sides in C. denticulata sp. nov. ( Figs 65B, C , 66B, C ), whereas spermathecae slightly curved and pointing towards the inner margin of epigyne in C. inerrans ( Fig. 69B, C ).

Description. Male (holotype, Fig. 67A–C , one of paratypes Fig. 67F, G ): Total length: 2.62. Carapace 1.14 long, 0.91 wide; cephalic region slightly elevated, dark brown; fovea, cervical and radial grooves distinct. Clypeus 0.31 high. Sternum wider than long, dark brown, sparsely covered with microsetae. Labium wider than long. Maxillae long, distal end broad with scopulae. Chelicerae with four promarginal and five retromarginal teeth, reteromargin also with a long projection equipped with setae (paratype, Fig. 67F, G ). Eye region narrow, AER recurved, PER straight, slightly wider than AER. Eye sizes and interdistances: AME 0.06, ALE 0.08, PME 0.06, PLE 0.07, AME–AME 0.03, PME–PME 0.05, AME–ALE, 0.03, PME–PLE 0.07, AME–PME 0.06, ALE–ALE 0.32, PLE–PLE 0.36, ALE–PLE contiguous. Length of legs: I 2.97 (0.88, 1.01, 0.61, 0.47), II 2.66 (0.81, 0.88, 0.56, 0.41), III 2.37 (0.72, 0.75, 0.51, 0.39), IV 3.06 (0.93, 0.99, 0.69, 0.45). Leg formula IV-I-II-III. Tm I 0.37 and Tm IV 0.21. Tibial spine formula: 2-2-2- 1. Abdomen 1.48 long, 1.03 wide, oval, brown, covered with fine hairs.

Palp ( Figs 64A–D , 66A, D ): Patella short; tibia conic, with one reterolateral and one dorsal trichobothria, with two broad triangular apophyses; paracymbium L-shaped, inner margin of distal arm with broad lower projection, its blunt tip pointing towards the proximal cymbial apophysis; tegulum with transparent protegulum with broad distal end; distal suprategular apophysis sclerotized, proximal end broad, slightly grooved with blunt end. Embolic division with a broad plate, distally grooved with several long teeth, median membrane transparent, with blunt end, slightly covering the embolus in reterolateral view; embolus sclerotized, basally curved, with teeth, its blunt end pointing towards the broad plate.

Female (paratype, Fig. 67D, E ): Total length: 2.38. Carapace 0.82 long, 0.76 wide; cephalic region slightly elevated, dark brown; fovea, cervical and radial grooves distinct. Clypeus 0.23 high. Sternum wider than long, dark brown, sparsely covered with microsetae. Labium wider than long. Maxillae long, distal end broad with scopulae. Chelicerae with five promarginal and five retromarginal teeth. Eye region narrow, AER recurved, PER straight, slightly wider than AER. Eye sizes and interdistances: AME 0.05, ALE 0.07, PME 0.05, PLE 0.06, AME–AME 0.03, PME–PME 0.05, AME–ALE, 0.04, PME–PLE 0.07, AME–PME 0.07, ALE–ALE 0.32, PLE–PLE 0.34, ALE–PLE contiguous. Length of legs: I 2.76 (0.81, 0.9, 0.59, 0.46), II 2.5 (0.74, 0.81, 0.56, 0.39), III 2.19 (0.63, 0.71, 0.47, 0.38), IV 2.91 (0.84, 0.99, 0.64, 0.44). Leg formula IV-I-II-III. Tm I 0.32 and Tm IV 0.19. Tibial spine formula: 1-1-1-1. Abdomen 1.56 long, 1.03 wide, oval, brown, covered with fine hairs.

Epigyne ( Fig. 65A–C , 66B, C ): Ventral plate sclerotized, mid ventrally grooved, laterally with a lobe on each side; Copulatory ducts short, located mesally; spermathecae elliptical, pointing towards lateral sides; fertilization ducts small, extending mesally.

Distribution. Known only from the type locality ( Fig. 71 ).

Collinsia inerrans (O. Pickard-Cambridge, 1885) (ª đũHƦ)

Figures 68–71

Erigone deserta L. Koch, 1879 c: 73 (D; suppressed for lack of usage).

Collinsia inerrans Tanasevitch, 1990: 105 , figs 22.12–13, 24.36 (mf); Zhu & Zhang, 2011: 120, fig 73A–E (mf). For full list of publications and synonyms concerning this species see World Spider Catalog (2022).

Material examined. 1♀, CHINA, Yunnan, Gongshan County, Cikai Township , 50 km W of Gongshan on Dulong Valley Road, 27.78447°N, 98.46020°E, alt. 3370m, 01 October 2002, D. H. Kavanaugh leg. ; 2 ♂, Tengchong County, Jietou Township, 8# boundary post of Yakou , 25.80894°N, 98.62080°E, alt. 2890m, 23 May 2006, Xian-jin Peng and Xin-ping Wang leg ..

Distribution. Europe, Caucasus, China, Russia to Central Asia, Japan, Korea.

Genus Conglin Zhao & Li, 2014 (ṀHƦø)

Figures

FIGURE 61. Cirrosus atrocaudatus Zhao & Li, 2014, male palp. A prolateral view B retrolateral view C ventral view D dorsal view.

FIGURE 62. Cirrosus atrocaudatus Zhao & Li, 2014, male. A Habitus, dorsal view B Habitus, ventral view.

FIGURE 63. Distribution of Cirrosus atrocaudatus Zhao & Li, 2014.

FIGURE 64. Collinsia denticulata sp. nov., male palp of holotype. A prolateral view B retrolateral view C ventral view D dorsal view.

FIGURE 65. Collinsia denticulata sp. nov., female paratype. A, B Epigyne, ventral view C Vulva, dorsal view.

FIGURE 66. Collinsia denticulata sp. nov., male holotype (A, D), female paratype (B, C). A Palp, prolateral view B Epigyne, ventral view C Vulva, dorsal view D Palp, retrolateral view.

FIGURE 67. Collinsia denticulata sp. nov., male holotype (A–C) and female paratype (D, E), male paratype (F, G). A, D Habitus, dorsal view B Habitus, lateral view C, E Habitus, ventral view F Chelicerae, dorsal view G Chelicerae, ventral view.

FIGURE 68. Collinsia inerrans (O. Pickard-Cambridge, 1885) palp. A prolateral view B retrolateral view C ventral view D dorsal view.

FIGURE 69. Collinsia inerrans (O. Pickard–Cambridge, 1885). A, B Epigyne, ventral view C Vulva, dorsal view.

FIGURE 71. Distribution of Collinsia species.