Phaeacius yixin, Zhang & Li, 2005

Zhang, J. X. & Li, Daiqin, 2005, Four New And One Newly Recorded Species Of The Jumping Spiders (Araneae: Salticidae: Lyssomaninae & Spartaeinae) From (Sub) Tropical China, Raffles Bulletin of Zoology 53 (2), pp. 221-229 : 225-226

publication ID

https://doi.org/ 10.5281/zenodo.4619118

persistent identifier

https://treatment.plazi.org/id/03DE670A-F556-6550-960D-90B8FD47FD38

treatment provided by

Carolina

scientific name

Phaeacius yixin
status

sp. nov.

Phaeacius yixin View in CoL , new species

( Fig. 3 View Fig 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. GoogleMaps

Non-types: 2 female juveniles ( ZRC •ARA•504), same data as holotype GoogleMaps ; 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 GoogleMaps .

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 View Fig ). It differs from Phaeacius yunnanensis Peng & Kim, 1998 (Peng & Kim, 1998: 411-413, Figs. 1-3 View Fig View Fig View Fig ) in the shape of retrolateral tibial apophysis of male palp and the presence of pronounced apophysis between ventral and retrolateral apophyses ( Fig. 3D, E View Fig ).

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 View Fig ) 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 View Fig ) robust and round, retrolateral apophysis long with a median process, pronounced apophysis between ventral and retrolateral apophysis almost triangular.

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.

ZRC

Zoological Reference Collection, National University of Singapore

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Phaeacius

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