Pardosa daxiansongi Barrion, Barrion-Dupo & Heong

Alberto T. Barrion, Aimee Lynn A. Barrion-Dupo, Josie Lynn A. Catindig, Sylvia C. Villareal, Ducheng Cai, Qianhua Yuan & Kong Luen Heong, 2016, NEW SPECIES OF SPIDERS (ARANEAE) FROM HAINAN ISLAND, CHINA, UPLB Museum Publications in Natural History 3, pp. 1-103 : 15-16

Pardosa daxiansongi Barrion, Barrion-Dupo & Heong , new species [ Figure 16 A-D]

FEMALE. Holotype female, total length 7.80 mm. Cephalothorax length 3.40 mm, width 2.50 mm. Abdomen length 4.00 mm, width 2.50 mm.

Carapace. 1.36x longer than wide, with two longitudinal dark brown bands running from clypeus, posterior median eyes to posterior end of cephalothorax sandwiching a white median longitudinal band and two white lateral bands below the brown bands. Chelicerae brownish yellow, 2.5x longer than wide and bear 3 promarginal and one retromarginal teeth. Clypeus with three yellow and two brown spots. Labium with a truncate to rounded yellow apical margin. Sternum uniformly yellow.

Eyes. In three rows of four, two and two. AER straight to slightly recurved viewed frontally, shorter than PME row (0.70:1.00). PME shorter than PLE row (1:1.18). Eye diameter (mm.): PME (0.33)> PLE (0.30)> AME (0.17)> ALE (0.13). PME separation as long as 1PME diameter. Clypeus height 1.35X AME diameter.

Legs. Uniformly yellow brown. Femur I slightly longer than femur II. Patella I & II subequal. Tibia II as long as metatarsus II. Metatarsus IV 2.12x longer than metatarsus I and 1.85x longer than metatarsus III. Tibia IV spination 2-4-2-2. Leg II as long III. Leg formula 4123.

Abdomen. Oblong, 1.6x longer than wide, grayish brown with a white median longitudinal band at anterior one-half and yellowish gray ventrally. Posterior spinnerets yellow and anterior pair black.

Epigynum bears a large button-like median septum in unmacerated form with a median cleft in the posterior margin, x value = 0.33, ratio of height (a) and width (b) = 0.71. Spermathecae oblong and apically converging.

MALE. Unknown.

Material Examined. Holotype female (coll. no. DAP 14), CHINA, Hainan Island, Dapo, Dapo village, 25 March-9 April 2011, ATBarrion, JLACatindig and SCVillareal.

Diagnostic Features. This new lycosid spider closely resembles Pardosa astrigera C.L.Koch, 1878 in the color pattern of carapace and Lycosa yunnanensis Yin, Peng and Wang, 1996 in the shape of the posterior margin of septum but differs from both taxa in (1) leg formula and spination in tibia IV, (2) leg II as long as III, (3) epigynum ratio of a/b =0.71, (4) strongly C-shaped guide pocket, (5) distinctly cleft posterior epigynal margin, and (6) eye measurements.

Etymology. Patronym, in recognition of Dr. Song Daxian’s outstanding contributions in the spider systematics of China.

Figures

Figure 16 A-D. Pardosa daxiansongi Barrion, Barrion-Dupo & Heong, new species, ventral (A), dorsal (B) and close-up of left epigynum (C), and cheliceral teeth (D).