New cave-dwelling spiders of the family Dictynidae (Arachnida: Araneae) from Guangxi and Guizhou, China Author Li, Shuqiang Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar; E-mail: lisq @ ioz. ac. cn & Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China & University of the Chinese Academy of Sciences, Beijing 100049, China Author Wang, Xiaoxiao Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China text Zoological Systematics 2017 42 2 125 228 journal article 10.11865/zs.201711 2095-6827 5366040 AB92E114-07FF-41A5-AF24-DF04F8232CA5 Cicurina avicularia Li , sp. nov. ( Figs 62–66 , 97 ) Type material. Holotype . Male , China , Guizhou , Bijie City , Hezhang County , Yemachuan Town , Nanchong Village , cave without name, 27º08.080'N , 104º48.883'E , elev. 1486 m , 15 November 2011 , Z. Zha & Z. Chen leg., deposited in IZCAS . Paratype . 1 female , same data as holotype, deposited in IZCAS . Figure 62. Cicurina avicularia Li , sp. nov. , holotype, male. A. Left pedipalpus, prolateral view. B. Left pedipalpus, retrolateral view. Scale bar= 0.1 mm. Figure 63. Cicurina avicularia Li , sp. nov. , holotype, male. A. Left pedipalpus, ventral view. B. Palp bulb, ventral view. Scale bars= 0.1 mm. Etymology. The specific name is derived from the Latin word “ avicularius ”, meaning “of birds”, and refers to the shape of TA ; adjective. Diagnosis. Male of this new species closely resembles those of C. kailiensis Li , sp. nov. ( Figs 73–74 , 76 ), but can be distinguished by the prolateral margin of TA with a tongue- shaped apophysis (lacking apophysis in C. kailiensis Li , sp. nov. ), embolus originated at approximately 6-o’clock position (originated at approximately 9-o’clock position in C. kailiensis Li , sp. nov. ), and the apical end of RTA pointed and with 2 setae (apical end blunt and with 1 seta in C. kailiensis Li , sp. nov. ). Female genitalia similar to C. dong Li , sp. nov. ( Figs 69 , 71 ), but can be distinguished by the posteriorly located BO (anteriorly located in C. dong Li , sp. nov. ), the part of laterally extending copulatory ducts “C”-shaped coiled (straight in C. dong Li , sp. nov. ). Description. Male ( holotype ). Total length 2.43 ( Fig. 66E ). Prosoma length 1.24, width 0.98. Cephalic region width 0.53. Prosoma ovate. Dorsal shield of prosoma yellow, with flat cephalic area, fovea reduced, cervical groove indistinct. Eight eyes, AME black, others white, all eyes encircled with black. PER procurved by half PME diameter. Eye diameters: AME 0.04, ALE 0.06, PLE 0.07, PME 0.05. Eye interdistances: AME-ALE 0.02, AME-AME 0.02, PLE-PME 0.04, PME- PME 0.06. Eye region length 0.14, width 0.33. Clypeus height 0.09. Chelicerae yellow-brown, length 0.54, width 0.24, with distinct lateral condyles, 3 (1 large, 2 small) promarginal and 6 retromarginal teeth. Labium yellow-brown, 0.15 long, 0.23 wide. Gnathocoxae yellow-brown, 0.30 long, 0.25 wide. Sternum yellow, 0.74 long, 0.69 wide. Legs yellow. Leg formula IV-I-II-III. Leg measurements: I 3.75 (1.10, 0.39, 0.94, 0.78, 0.54); II 3.47 (1.03, 0.38, 0.83, 0.75, 0.48); III 3.10 (0.92, 0.35, 0.65, 0.73, 0.45); IV 4.01 (1.08, 0.38, 0.95, 0.99, 0.61). Opisthosoma length 1.24, width 0.95. Opisthosoma yellow, with two rows of gray spots. Pedipalpus ( Figs 62–63 , 65 ). Cymbium length 0.55. Apex of cymbium as long as wide. Embolus originated at approximately 6-o’clock position. Embolus slender, filiform. Teminate of TA strongly sclerotized, relatively short, lateral margin with several denticles. Prolateral margin of TA with a tongue-shaped apophysis. RTA apical end pointed, simple, with a single fold and with 2 setae. Figure 64. Cicurina avicularia Li , sp. nov. , paratype, female. A. Vulva, dorsal view. B. Epigynum, ventral view. Scale bars= 0.05mm. Figure 65. Cicurina avicularia Li , sp. nov. , holotype, male. A. Palp bulb, ventral view. B. Left pedipalpus, ventral view. C. Left pedipalpus, prolateral view. D. Left pedipalpus, retrolateral view. Scale bars =0.1 mm. Figure 66. Cicurina avicularia Li , sp. nov. A–D. Paratype, female. E. Holotype, male, habitus, dorsal view. A. Epigynum, ventral view. B. Vulva, dorsal view. C. Habitus, dorsal view. D. Habitus, ventral view. Scale bars: A–B = 0.05 mm; C–E = 0.5 mm. Female ( paratype ). Total length 2.65 ( Figs 66C–D ). Prosoma length 1.35; width 0.98. Cephalic width 0.60. Prosoma pyriform. PER relatively straight. Eye diameters: AME 0.04, ALE 0.07, PLE 0.06, PME 0.05. Eye interdistances: AME- ALE 0.02, AME-AME 0.04, PLE-PME 0.07, PME-PME 0.08. Eye region length 0.13, width 0.36. Clypeus height 0.12. Chelicerae length 0.60, width 0.28, with distinct lateral condyles, 3 (1 large, 2 small) promarginal and 6 retromarginal teeth. Labium length 0.16, width 0.25. Gnathocoxae length 0.39, width 0.21. Sternum length 0.83, width 0.73. Leg formula IV-I- II-III. Leg measurements: I 3.97 (1.13, 0.50, 0.95, 0.86, 0.53); II 3.66 (1.08, 0.45, 0.80, 0.80, 0.53); III 3.44 (1.00, 0.39, 0.73, 0.78, 0.54); IV 4.38 (1.23, 0.45, 1.00, 1.07, 0.63). Opisthosoma length 1.38, width 1.10. Epigynum ( Figs 64 , 66A–B ). Width 0.39. Epigynum with large atrium, posterioly located. Bursae enlarged, not fused. Copulatory ducts hardly separated at midline. Coils forming roughly an "8". The laterally extending part of copulatory ducts “C”-shaped coiled. Spermathecae bulb-shaped, widely separated. Fertilization ducts long, laterally attached at the base of spermathecae. Distribution. Known only from the type locality ( Fig. 97 ).