Taxonomic revision of Telemidae (Arachnida, Araneae) from East and Southeast Asia Author Zhao, Huifeng Hebei Key Laboratory of Animal Diversity, College of Life Science, Langfang Normal University, Langfang 065000, China & College of Life Sciences, Capital Normal University, Beijing 100048, China Author Li, Shuqiang Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China https://orcid.org/0000-0002-3290-5416 lisq@ioz.ac.cn Author Zhang, Aibing College of Life Sciences, Capital Normal University, Beijing 100048, China zhangab2008@mail.cnu.edu.cn text ZooKeys 2020 933 15 93 http://dx.doi.org/10.3897/zookeys.933.38653 journal article http://dx.doi.org/10.3897/zookeys.933.38653 1313-2970-933-15 AE87B5CF9728466BAB056BFFFED802D4 C7F79558BB375F3482BCEABFB2F5F177 Siamlema changhai Zhao & Li sp. nov. Figures 1D , 20 , 21 , 33 Type material. Holotype: ♂ (IZCAS), Thailand, Trang Province, Noyong District, Chang Hai Cave, 7.5893N , 99.6688E , elevation ca. 32 m, XI.2015, Z. Chen, G. Zhou, and Q. Zhao leg. Paratypes: 2♂ and 4♀ (IZCAS), same data as holotype. Other material examined. 1♀ (molecular voucher, IZCAS), same data as holotype. Etymology. The species name refers to the type locality; noun in apposition. Diagnosis. This species resembles S. suea sp. nov. but can be distinguished by the following: the absence of eyes (Figs 20A , 21B ) (vs. presence), the presence of a bulbal apophysis (Fig. 20B-D ) (vs. absence), the presence of a dorsal spine on the palpal femur distally (arrows on Fig. 20C, D ) (vs. spine absent), and the absence of a spine on the palpal tibia retrolaterally (Fig. 20D ) (vs. spine present). Receptacle is tube-shaped (Fig. 21A ) (vs. globular). Figure 21. Siamlema changhai sp. nov., female paratype. A Endogyne, lateral view B habitus, dorsal view C habitus, ventral view. Scale bars: 0.05 mm ( A ), 0.2 mm ( B, C ). Description. Male (holotype). Total length 0.92. Carapace 0.41 long, 0.40 wide. Abdomen 0.50 long, 0.44 wide. Carapace brown (Fig. 20A ). Eyes absent (Fig. 20A ). Chelicerae, legs, labium, and endites brown. Sternum bright brown. Leg measurements: I 3.28 (0.95, 0.17, 1.00, 0.69, 0.47); II 2.93 (0.86, 0.16, 0.85, 0.63, 0.43); III 2.17 (0.66, 0.14, 0.58, 0.43, 0.36); IV 2.73 (0.86, 0.14, 0.75, 0.56, 0.42). Abdomen brown with a few long setae (Fig. 20A ). Palp. Tibia 1.57 times longer than patella, cymbium 1.22 times longer than tibia, femur 1.06 times longer than cymbium (Fig. 20C, D ); cymbial apophysis present at sub-distal part (Fig. 20C ), one femoral distal spine (Fig. 20C, D ), a semi-round extension on patella proximally (Fig. 20D ); bulb shaped as in Fig. 20C, D ; bulbal apophysis nearly transparent, with 4 sclerotized teeth (Fig. 20B-D ); embolus sclerotized, finger shaped (Fig. 20B-D ). Female. Total length 1.04. Carapace 0.48 long, 0.41 wide. Abdomen 0.56 long, 0.50 wide. Carapace, sternum, legs milky white (Fig. 21B, C ). Leg measurements: I 3.31 (1.00, 0.17, 0.99, 0.67, 0.48); II 2.97 (0.90, 0.16, 0.86, 0.60, 0.45); III 2.18 (0.67, 0.14, 0.59, 0.42, 0.36); IV 2.73 (0.86, 0.15, 0.75, 0.56, 0.41). Abdomen dark brown with some long setae (Fig. 21B, C ). Receptacle tube-shaped, neck two times thinner than distal part (Fig. 21A ). Distribution. Thailand (Trang, site 9 in Fig. 33 ), known only from the type locality.