Five new species of the genera Falcileptoneta and Longileptoneta (Araneae, Leptonetidae) from South Korea Author Lan, Tianqi Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China Author Zhao, Zhe Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China Author Kim, Seung Tae Life and Environment Research Institute, Konkuk University, Seoul 05029, South Korea stkim2000@hanmail.net Author Yoo, Jung Sun Biological and Genetic Resources Utilization Division, National Institute of Biological Resources, Incheon 22689, South Korea Author Lee, Sue Yeon College of Agricultural Life Science, Jeonbuk National University, Jeonju-si 54896, South Korea Author Li, Shuqiang https://orcid.org/0000-0002-3290-5416 Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China lisq@ioz.ac.cn text ZooKeys 2021 2021-01-13 1010 97 116 http://dx.doi.org/10.3897/zookeys.1010.59915 journal article http://dx.doi.org/10.3897/zookeys.1010.59915 1313-2970-1010-97 E70E8895CD5E4DEF9DA3E385065612B7 E93AE91D61B65DF286B6E5576C7DA167 Longileptoneta buyongsan sp. nov. Figures 5 , 6 , 12 Type material. Holotype . Male (NIBR), South Korea, Chungcheongbuk-do, Eumseong-gun, Eumseong-eup, Sajeong-ri, Mt. Buyongsan ( 36.970236°N , 127.619596°E , elevation ca 167 m), 6 August 2019, ZG. Chen, Z. Zhao & YY. Hu leg. Paratypes . 1 male and 1 female (NIBR), same data as holotype. Diagnosis. Longileptoneta buyongsan sp. nov. is similar to L. gayaensis Seo, 2016 and L. songniensis Seo, 2015 but can be distinguished by the palpal tibia with one small retrolaterodistal apophysis (Fig. 5D ) (vs. tibia without apophysis in L. gayaensis and L. songniensis ); by the palpal tarsus without spur at tip (Fig. 5C, D ) (vs. tarsus with one spur at tip in L. gayaensis ; tarsus with one spur at tip and one prolateroproximal spur, branched retrolaterally in L. songniensis ); also distinguished from L. songniensis by the palpal bulb with needle-shaped prolateral sclerite and shoehorn-like median sclerite (Fig. 5B-D ) (vs. without prolateral sclerite and finger-like median sclerite in L. songniensis ). Description. Male (holotype). Total length 1.86. Prosoma 0.82 long, 0.76 wide. Opisthosoma 1.04 long, 0.74 wide. Clypeus 0.11 high. Leg measurements: I 5.56 (1.60, 0.30, 1.67, 1.28, 0.71); II 4.50 (1.28, 0.26, 1.29, 1.03, 0.64); III 3.56 (1.03, 0.19, 0.89, 0.83, 0.62); IV 4.96 (1.41, 0.24, 1.47, 1.15, 0.69). Habitus as in Fig. 5A . Prosoma brownish. Eyes six (Fig. 5A ). Median groove, cervical grooves and radial furrows distinct. Opisthosoma yellowish, ovoid. Palp (Fig. 5C, D ): femur with many strong spines (Fig. 5C, D ); tibia with one small retrolaterodistal apophysis (Fig. 5D ); tarsus with many spines and prolateral curvature (Fig. 5C, D ). Bulb with leaf-like embolus and three types of sclerites: prolateral sclerite needle-shaped; median sclerite shoehorn-like; retrolateral sclerite transparent and triangular (Fig. 5B-D ). Female (one of the paratypes). Similar to male in color and general features, habitus as in Fig. 6A, B . Total length 1.77. Prosoma 0.71 long, 0.61 wide. Opisthosoma 1.06 long, 0.70 wide. Clypeus 0.10 high. Leg measurements: I 3.95 (1.09, 0.25, 1.14, 0.89, 0.58); II 3.13 (0.88, 0.20, 0.87, 0.63, 0.55); III - (0.71, -, -, -, -); IV 3.79 (1.08, 0.24, 1.07, 0.83, 0.57). Internal genitalia (Fig. 6C ) with atrium rectangular, spermatheca and genital duct tube-shaped, loosely coiled. Figure 6. Longileptoneta buyongsan sp. nov., female paratype A habitus, dorsal view B habitus, ventral view C internal genitalia, dorsal view. Abbreviations: At atrium SH spermathecae SS spermathecae stalk. Scale bar: equal for A, B . Etymology. The specific name refers to the type locality and is a noun in apposition. Habitat. Litter layers in mixed forest. Distribution. South Korea (Chungcheongbuk-do; Fig. 12 ).