Description of two new species of the genus Spinirta Jin & Zhang, 2020 (Araneae, Corinnidae) from southern China Author Liu, Ke-Ke https://orcid.org/0000-0001-7822-3667 College of Life Science, Jinggangshan University, Ji'an 343009, Jiangxi, China Author Jiang, Zi-Min https://orcid.org/0000-0001-9044-3312 College of Life Science, Jinggangshan University, Ji'an 343009, Jiangxi, China Author Ma, Ning https://orcid.org/0000-0002-6715-5870 College of Life Science, Jinggangshan University, Ji'an 343009, Jiangxi, China Author Li, Wen-Hui https://orcid.org/0000-0002-8074-9526 College of Life Science, Jinggangshan University, Ji'an 343009, Jiangxi, China Author Xiao, Yong-Hong College of Life Science, Jinggangshan University, Ji'an 343009, Jiangxi, China yonghong.xiao1@mail.cn text ZooKeys 2022 2022-12-16 1136 57 69 http://dx.doi.org/10.3897/zookeys.1136.94374 journal article http://dx.doi.org/10.3897/zookeys.1136.94374 1313-2970-1136-57 D6B0E3E906854235B92552AEDFDA1CF4 7CAB6C41798953AA9E394E2B683DA74F Spinirta sishuishan Liu sp. nov. (汜水山刺突蛛) Figs 6 , 7 , 8 Material examined. Holotype : 1 ♂ , China : Jiangxi Province , Ganzhou City , Chongyi County , Sishui Mountain , near parking lot, 25°27'11.73"N , 113°55'30.04"E , 965 m , 2.X.2020 , K. Liu et al. leg. (Cor-02). Etymology. The specific name, derived from the type locality, is a noun in apposition. Diagnosis. The male of this new species can be distinguished from S. sanxiandian sp. nov. by the shield retrolateral tibial apophysis ( RTA ) (vs. ear-shaped), the anterior part of the tegulum lacking lateral apophysis (vs. present in S. sanxiandian sp. nov.) and the relatively blunt embolic apophysis ( EA ) in retrolateral view (vs. sharp in S. sanxiandian sp. nov.) (cf. Fig. 7 vs. Fig. 2 ). Description. Male. Habitus as in Fig. 6A, B . Total length 10.45. Carapace: 5.6 long, 4.21 wide. Carapace covered with abundant short hairs. Eye sizes and interdistances (Fig. 6C ): AME 0.35, ALE 0.24, PME 0.3, PLE 0.29, AME-AME 0.2, AME-ALE 0.08, PME-PME 0.27, PME-PLE 0.23, AME-PME 0.2, AME-PLE 0.41, ALE-ALE 0.96, PLE-PLE 1.43, ALE-PLE 0.07. MOA 0.76 long, front width 0.8, back width 0.85. Chelicera (Fig. 6D ) with three promarginal and six retromarginal teeth. Abdomen: 4.79 long, 3.14 wide. Leg measurements: I 15.93 (4.62, 1.44, 4.18, 3.64, 2.05); II 15.78 (4.41, 1.9, 3.75, 3.73, 1.99); III 13.51 (3.75, 1.58, 3.15, 3.29, 1.74); IV 18.24 (4.84, 1.83, 4.29, 5.37, 1.91); spination (Fig. 6E, F ): I Fe: d3, p1; Ti: v7; Mt: v4; II Fe: d1, p1; Ti: r3, v7; Mt: r2, v4; III Fe: d3, r1; Ti: p4, r2, v4; Mt: p4, r1, v5; IV: Fe: d3, r1; Ti: p3, r2, v2; Mt: p2, r2, v2. Colouration (Fig. 6 ). Carapace and chelicerae dark brown. Endites and labium red-brown to dark brown. Sternum dark brown. Legs: femora I-IV dark brown, tibia and metatarus IV red to dark brown; patellae I-IV, tibiae and metatarsi I-III and tarsi I-IV red. Abdomen dark brown, medially with a pale serrulate marking. Spinnerets yellow-brown. Figure 6. Spinirta sishuishan Liu sp. nov., male holotype A habitus, dorsal view B same, ventral view C eyes, dorsal view D chelicerae, endites and labium, ventral view E leg I, ventral view F leg II, ventral view. Scale bars: 2 mm ( A, B ); 0.5 mm ( C ); 0.2 mm ( D ); 1 mm ( E, F ). Palp as in Fig. 7 . Tibia with distinct retrolateral groove, ventral apophysis ( VTA ) thumb-like in ventral view. Retrolateral tibial apophysis ( RTA ) shield in retrolateral view, nearly as long as tibial length, ventral surface with four lines of short cone-shaped spines ( CS ). Prolateral tibial apophysis ( PTA ) thick horn-like, strongly sclerotised, nearly as long as 1/3 of tibia. Tegulum with strongly sclerotized apex. Subtegulum ( St ) with many wrinkles on posterolateral tegulum. Sperm duct ( SD ) S-shaped in posterior part. Embolus ( E ) spine-like, with thick base, forming a C-shape with short blunt embolic apophysis ( EA ), nearly 4 x longer than embolic apophysis. Figure 7. Spinirta sishuishan Liu sp. nov., palp of male holotype A prolateral view B ventral view C retro-ventral view D dorsal view E detail of VTA and RTA, ventral view F same, ventral view, slightly retrolateral G detail of tegulum, ventral view H same, retro-ventral view. Abbreviations: CS - cone-shaped spines, E - embolus, EA - embolic apophysis, PTA - prolateral tibial apophysis, RTA - retrolateral tibial apophysis, St - subtegulum, VTA - ventral tibial apophysis. Scale bars: 0.1 mm. Female. Unknown. Distribution. Known only from the type locality, Jiangxi Province, China (Fig. 8 ). Figure 8. Records of Spinirta sanxiandian sp. nov. (circle) and S. sishuishan sp. nov. (triangle) from Jiangxi Province, China.