Hamataliwa cordata, Zhang & Zhu & Song, 2005

Zhang, Jun-Xia, Zhu, Ming-Sheng & Song, Da-Xiang, 2005, Revision of the spider genus Hamataliwa Keyserling from China (Araneae: Oxyopidae), Zootaxa 1017 (1017), pp. 1-17 : 7-9

Hamataliwa cordata sp. nov.

( Figs. 6–10)

Type material. Holotype female, CHINA: Guangxi Province, Tianlin County, N 24°18’, E 106°12’, Langping, 28 May 2002, C. Zhang leg. ( MHBU) . Paratype: 1 male, same data as holotype ( MHBU) .

Diagnosis. The new species resembles Hamataliwa labialis ( Song, 1991) in the heartlike depression of female epigynum, but can be easily distinguished from the latter in copulatory ducts of female epigynum short, spermathecae oval ( Fig. 8); tip of median apophysis of male palpal organ round, conductor complex, with four distal processes, ventral tibial apophysis large and hammer­like, retrolateral tibial apophysis almost rectangular with a small process ( Figs. 9–10).

Etymology. The specific name is derived from the Latin word “cordatus, ­a, ­um” and refers to the heart­like posterior depression of the female epigynum; adjective.

Description.

Female (holotype): Total length 4.95. Prosoma 2.25 long, 1.80 wide; opisthosoma 2.84 long, 1.80 wide. Carapace red brown, with some brown bands on clypeus, in front of fovea and behind posterior median eyes; eyes area black. Eye diameters: AME 0.10, ALE 0.22, PME 0.18, PLE 0.18. Distances AME–AME 0.10, AME–ALE 0.07, PME–PME 0.34, PME–PLE 0.30. First eye row 0.27 wide, second eye row 0.65 wide, third eye row 1.14 wide, fourth eye row 0.65 wide. MOA 0.78 long, front width 0.27, back width 0.65. Clypeus width 0.46. Chelicerae red brown, with two promarginal and one retromarginal teeth. Femur of palp with four dorsal spines. Endites red brown. Labium grey brown. Sternum yellow, with grey brown lateral margins, lacking erect setae. Endite longer than wide (0.63: 0.34). Labium longer than wide (0.48: 0.34). Sternum longer than wide (1.09: 0.82).

Opisthosoma oval; dorsum brownish­yellow, with irregular dark brown markings and three short transverse bands at posterior part; venter brownish­yellow, with a mesal wide brown longitudinal stripe behind the epigastric furrow.

Legs yellow brown, with grey brown stripes. Tibiae with long dorsal trichobothria, tibia III with a short ventral spine distally. Leg formula: 1234.

Leg measurements:

femur patella+tibia metatarsus tarsus total

I 2.34 2.75 1.71 0.90 7.70

II 2.12 2.52 1.62 0.90 7.16

III 1.85 1.98 1.35 0.63 5.81

IV 1.62 1.80 1.35 0.63 5.40

Epigynum as illustrated ( Figs. 7–8), posterior depression heart­like, with intromittent orifices at the anterior end of its lateral edges; copulatory ducts short, spermathecae oval.

Male. Total length 4.55. Prosoma 2.16 long, 1.67 wide; opisthosoma 2.52 long, 1.26 wide. Eye diameters: AME 0.07, ALE 0.23, PME 0.14, PLE 0.14. Distances AME–AME 0.10, AME–ALE 0.06, PME–PME 0.29, PME–PLE 0.27. First eye row 0.25 wide, second eye row 0.57 wide, third eye row 1.00 wide, fourth eye row 0.57 wide. MOA 0.77 long, front width 0.25, back width 0.57. Clypeus width 0.34. Tibiae III and IV with a pair of short ventral spines distally. Dorsum of opisthosoma yellow brown, with indistinct black markings and two short dark brown transverse bands at posterior part. Other characters similar to those of female. Leg formula: 1234.

Palp measurements:

femur patella tibia tarsus total

palp 0.56 0.30 0.25 0.99 2.10

Leg measurements:

femur patella+tibia metatarsus tarsus total

I 2.25 2.79 1.85 1.04 7.93

II 2.16 2.61 1.71 0.90 7.38

III 1.71 2.07 1.44 0.72 5.94

IV 1.58 1.80 1.58 0.77 5.73

Male palp as illustrated ( Figs. 9–10); basal outgrowth of cymbium finger­shaped in lateral view; median apophysis longitudinal and almost triangular, with its base wide and distal end rounded and slightly hooked; embolus long, with a membranous process and a basal twist, its distal end hidden behind the conductor; conductor complex, with four distal processes; ventral tibial apophysis large and hammer­like in ventral view, retrolateral tibial apophysis small with a small process.

Distribution. China: Guangxi.