Four New And One Newly Recorded Species Of The Jumping Spiders (Araneae: Salticidae: Lyssomaninae & Spartaeinae) From (Sub) Tropical China Author Zhang, J. X. Author Li, Daiqin text Raffles Bulletin of Zoology 2005 2005-12-31 53 2 221 229 journal article 10.5281/zenodo.4619118 2345-7600 4619118 Phaeacius yixin , new species ( Fig. 3 A-E) Materials examined . – Holotype : Male ( ZRC •ARA•503) , Institute of Tropical Forest ( 18°41.890'N 108°47.373'E ), Jianfengling , Hainan , China , coll. Y. X. Li , 13 Dec.2003 . Non-types: 2 female juveniles ( ZRC •ARA•504) , same data as holotype ; 1 male juvenile ( ZRC •ARA•505) , Institute of Tropical Forest ( 18°41.890'N 108°47.373'E ), Jianfengling , Hainan , China , coll. D. Li , 12 Dec.2003 . Diagnosis. – The new species resembles Phaeacius malayensis Wanless, 1981 , but can be easily distinguished from the latter by the pronounced apophysis between the ventral and retrolateral apophyses almost triangular, and the different shape of retrolateral tibial apophysis ( Fig. 3D, E ). It differs from Phaeacius yunnanensis Peng & Kim, 1998 (Peng & Kim, 1998: 411-413, Figs. 1-3 ) in the shape of retrolateral tibial apophysis of male palp and the presence of pronounced apophysis between ventral and retrolateral apophyses ( Fig. 3D, E ). Description . – Males . Length of holotype 8.64: cephalothorax 4.24 long, 3.20 wide, 1.76 high; abdomen 4.40 long, 2.48 wide. Carapace ( Fig. 3A ) deep brown, red brown behind eyes region and earthy yellow laterally, with many short fine hairs. Eye sizes: AME 0.59, ALE 0.31, PME 0.22, PLE 0.34. First eye row 2.12 wide, second row 1.88 wide, third eye row 2.04 wide, eye area 1.97 long. Clypeus height 0.09. Chelicerae (Fig. C) red brown, with 3 promarginal and 5 retromarginal teeth. Endites and labium red brown. Sternum and legs yellow. Legs with a few dorsal dark stripes and many long spines. Spination of leg I: metatarsi v 2-0- 0, p 1-1-0, r 1-1-2, d 0-1-0; tibiae v 2-3-2, p 1-0-1, r 1-0-1, d 1-1-1; patellae p 1-0-0, r 1-0-0; femora p 0-1-1, r 0-0-1, d 0-2-2. Measurements of palp and legs: palp 3.96 (1.28+0.56+0.40+1.72); I 9.57 (2.63+3.63+2.25+1.06), II 9.94 (2.88+3.75+2.31+1.00), III 9.81 (2.81+3.50+2.50+1.00), IV 11.20 (3.13+3.88+3.13+1.06). Leg formula: 4231. Abdomen oval, covered with many fine hairs; dorsum earthy yellow, with lateral margins black, centre with a brownish foliform patch; venter gray brown, black in front of genital groove, with two rows of muscle attachment spots from genital groove to spinnerets. Ventral tibial apophysis of male palp ( Fig. 3D, E ) robust and round, retrolateral apophysis long with a median process, pronounced apophysis between ventral and retrolateral apophysis almost triangular. Fig. 3. Phaeacius yixin , new species . A, male; B, carapace, lateral view; C, left chelicera, retrolateral view; D, left palp, ventral view (the black arrow refers to the pronounced apophysis between the ventral and retrolateral apophyses); E, same, lateral view. Scales: A, B = 1.0 mm, C-E = 0.2 mm. Etymology . – The specific name is a noun in apposition taken from the first name of the collector Y. X. Li, who was only 11 years old when he first collected the type specimen.