Barylestis saaristoi Jaeger , 2008

Zhong, Yang, Lin, Ye-Jie & Liu, Jie, 2019, First description of the male of Barylestissaaristoi Jaeger, 2008 (Araneae, Sparassidae) from China, ZooKeys 832, pp. 153-160 : 155-158

Barylestis saaristoi Jaeger, 2008 Figures 1-3, 4-8, 9-21, 22-25, 26

Barylestis saaristoi Jäger, 2008: 106, figs 1-14 (holotype female from Mae Hong Son Province, Thailand, deposited in SMF 58342).

Material examined.

1 male and 1 female (HBU), Mengxin Farm [21.89°N, 101.36°E, 736m], Dai Autonomous Prefecture of Xishuangbanna, China, 4 May 2018, Yiwu Zhu leg.; 2 females (HBU), Xishuangbanna Tropical Botanical Garden [21.96°N, 101.22°E, 757m] Dai Autonomous Prefecture of Xishuangbanna, China, 30 May 2015, Wancheng Li leg.

Diagnosis.

Male of B. saaristoi can be separated from B. montandoni (Lessert, 1929) and B. occidentalis (Simon, 1887) by embolus arising from tegulum in an 11- o’clock-position (3- o’clock-position in B. montandoni and B. occidentalis , Figs 2, 5), separated from B. fagei (Lessert, 1929) and B. variatus (Pocock, 1900) by the long and slender dRNA (short and wide in B. fagei and B. variatus , Figs 3, 6), separated from B. scutatus (Pocock, 1903) by tegulum partly covered embolic base (wholly covered in B. scutatus ). Females of this species can be recognised as this particular species by the following combination of characters: 1. Epigyne with V-shaped pit; 2. Vulva with tips of lateral coils pointing mediad and first part of copulatory ducts slender, running parallel ( Jäger 2008).

Description.

Male.PL 6.4, PW 7.5, AW 4.0, OL 5.4, OW 3.9. Eyes: AME 0.34, ALE 0.43, PME 0.26, PLE 0.44, AME–AME 0.26, AME–ALE 0.15, PME–PME 0.59, PME–PLE 1.03, AME–PME 0.55, ALE–PLE 0.97, CHAME 0.47, CHALE 0.62. Spination: Palp: 131, 101, 2021; Fe: I 333, II 000, III 333, IV 331; Pa: I 101, II 000, III 101, IV 000; Ti: I 2226, II 0004, III 2116, IV 2014; Mt: I 1014, II 0004, III 1014, IV 1016. Measurements of palp and legs: Palp 9.5 (2.9, 1.2, 1.6, -, 3.8), I 32.5 (8.6, 3.2, 8.7, 9.4, 2.6), II 27.1 (7.5, 2.3, 7.5, 7.1, 2.7), III 29.0 (9.1, 2.4, 8.4, 7.1, 2.0), IV 29.1 (9.3, 2.5, 8.1, 6.8, 2.4). Leg formula: I-IV-III-II (second leg may have fractured before collection, as it is very tiny; Figs 18-21). Cheliceral furrow with 3 anterior and 4 posterior teeth, without denticles. Claws of leg I with long and slightly curved teeth in both male and female. Female palpal claws with seven long teeth, almost same size as those of leg I (Figs 9-15). Dorsal carapace reddish-brown, posterior margins dark. Chelicerae, sternum, gnathocoxae and labium deep reddish-brown to black. Legs reddish -brown without spots and patches. Dorsal opisthosoma covered by long and dense hairs. Ventral opisthosoma uniformly yellowish-brown (Figs 22, 23). Cymbium significantly longer than tibia. Conductor membranous, arising from direction of tegulum 11:30. Embolus running 1.25 coils around tegulum, with tip situated near conductor. RTA arising medially from tibia, vRTA developed, almost rectangle-shaped and dRTA finger-shaped in ventral view (Figs 1-6).

Female. For details see Jäger (2008).

Distribution.

China (Yunnan Province, new record) (Fig. 26), Thailand (Mae Hong Son Province), Myanmar (Karen, Kayin State).