One new genus and two new species of the spider family Phrurolithidae (Arachnida, Araneae) from Xishuangbanna Tropical Botanical Garden, Southwest China Author Liu, Keke https://orcid.org/0000-0001-7822-3667 College of Life Science, Jinggangshan University, Ji'an 343009, Jiangxi, China Author Ying, Yuanhao College of Life Science, Jinggangshan University, Ji'an 343009, Jiangxi, China 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 2022 2022-08-11 1117 71 94 http://dx.doi.org/10.3897/zookeys.1117.89211 journal article http://dx.doi.org/10.3897/zookeys.1117.89211 1313-2970-1117-71 6D5ED7FEC48B423992CECB6165708939 E07E2EE2174F512BA307A8F676A0F517 Edelithus Liu & Li gen. nov. Type species. Edelithus shenmiguo Liu & Li sp. nov. by designation herein. Diagnosis. The new genus differs from Labialithus Kamura, 2021 (see Kamura 2021 : figs 9F-J, 10B, C) by the small PME with indistinct black pigment around the eye cup (vs large PME with clear pigment around the eye cup in Labialithus ) (Figs 1D , 4C , 6D , 11D ), the femora I with one dorsal spine (vs absent in Labialithus ) and three prolateral spines (vs one in Labialithus ) (Figs 1F , 4F , 6F , 8A , 11F ) and the metatarsi III-IV lacking ventral spines (vs usually with two pairs in Labialithus ), the male scutum covering nearly 1/2 of abdomen (vs more than 2/3 in Labialithus ) and by the palpal tibia with a dorsal apophysis (vs absent in Labialithus ). It can be separated from Otacilia (see Wang et al. 2015 : fig. 14A; Liu et al. 2022 : suppl. 2, figs 72, 74, 75, 77-79, 81, 82, 84, 85, 87, 88, 90, 91, 93-96, 98, 99, 101-105, 107-109, 111, 113, 114, 116-118, 120, 124, 137, 141) by the light abdomen lacking dark stripes (vs present in Otacilia ) (Figs 1A , 4A , 6A , 11A ), femora II lacking prolateral spine (in most specimens) or with one prolateral spine (in the few specimens) (vs 2-4 spines in Otacilia ) (Figs 1G , 4G , 6G , 8C , 11G ), the palpal femur with a weakly protruded ventral apophysis (vs moderately or strongly protruded in Otacilia ) (Figs 2 , 3 , 9 , 10 ) and the small, short embolus (vs relatively large hook-shaped or spine-like embolus) (Figs 2 , 3 , 9 , 10 ). Male of this genus can be easily distinguished from Phrurolithus (see Wang et al. 2015 : fig. 15C-E; Zamani and Marusik 2020 : figs 4A-C, E, F, 7A-E) by the scutum covering nearly 1/2 of abdomen (vs nearly entire abdomen in Phrurolithus ) (Figs 1A , 6A ) and by the palpal tibia with a dorsal apophysis (vs absent Phrurolithus ) (Figs 2D , 3H , 9E , 10I ). Females of this genus can be separated from the genus Labialithus by the very small, widely separated copulatory openings without atrium (vs relatively large, slightly separated copulatory openings with distinct atrium) (Figs 5 , 12 ). Furthermore, Edelithus spp. differ from some phrurolithid genera by the tarsal claws lacking tooth (Fig. 8B, D, I ), while present in Acrolithus and Aculithus Liu & Li, 2022 with three teeth, in Alboculus with two teeth, and in Grandilithus and Otacilia with four teeth (see Liu et al. 2020a: fig. 5J; Liu et al. 2022 : figs 4C, D, G, H, L, P, 38D, E, H, K, O, 122B, C, E, I, M), but in Phrurolithus only with degenerated and inconspicuous blunt teeth ( Ramirez 2014 : fig. 75E). Figure 1. Edelithus shenmiguo sp. nov., male A habitus, dorsal view B same, ventral view C same, lateral view D carapace, dorsal view, white arrow to cheliceral spine, black arrow to oval posterior median eyes without black annulations E same, ventral view F leg I, prolateral view, black arrows to prolateral spines on femur G leg II, white arrow to prolateral spine on femur. Scale bars: 0.1 mm ( A, B, D-G ), 0.5 mm ( C ). Etymology. The name is a combination of the first three letters of " edentatus " (referring to the tarsal claws lacking tooth) and the latter half of Phrurolithus . The gender is masculine. Description. Small, body length 1.0-2.5. Eyes (Figs 1D , 4C , 6D , 7A , 11D ): AER straight and PER procurved in dorsal view, AME clearly smaller than other eyes, PME with indistinct black pigment around eye cups, smaller than ALE and PLE, nearly separated by their diameter. Chelicera (Figs 1D , 4A , 6D , 7A, B , 11D ) with one frontal strong spine, three promarginal and two retromarginal teeth. Legs without annulations and stripes. Femora I-IV with one dorsal spine each (Figs 1F, G , 4F, G , 6F, G , 8A, C , 11F, G ), femur I with three prolateral spines, and femur II with one prolateral spine or none, tibiae I and II with six pairs of ventral spines; metatarsi I and II with tour pairs of ventral spines. Scutum (Figs 1A , 6A ) covers nearly 1/2 of abdomen in males, but absent in females (Figs 4A , 11A ). Male palp (Figs 2 , 3 , 9 , 10 ): femur with a weak ventral extension; tibia with two well-developed apophyses, retrolateral apophysis very thick, as long as or shorter than tibia, dorsal apophysis hook-shaped, shorter than the retrolateral one; tegulum with a leaf-shaped subdistal apophysis and a blunt retrolateral apophysis; embolus short, shorter than subdistal tegular apophysis, with a round sperm pore, touching subdistal tegular apophysis. Figure 2. Edelithus shenmiguo sp. nov., male palps A holotype, prolateral view B same, ventral view C same, retrolateral view D same, dorsal view E paratype, prolateral view F same, ventral view G same, retrolateral view H, I tegulum, retrolateral view. Abbreviations: DTA - dorsal tibial apophysis, Em - embolus, FA - femoral apophysis, rTA - retrolateral tegular apophysis, RTA - retrolateral tibial apophysis, SD - sperm duct, sTA - subdistal tegular apophysis. Scale bars: 0.1 mm. Epigyne (Figs 5 , 12 ) with a pair of small copulatory openings, located posteriorly or subposteriorly; median septum absent or located posteriorly; bursae large, covering nearly 1/2 of epigynal plate, anteriorly located. Composition. Edelithus puer sp. nov. and E. shenmiguo sp. nov. Distribution. China (Yunnan Province).