Artabrus erythrocephalus (C. L. Koch, 1846 )

Zhang, J. X., Song, D. X. & Li, Daiqin, 2003, Six New And One Newly Recorded Species Of Salticidae (Arachnida: Araneae) From Singapore And Malaysia, Raffles Bulletin of Zoology 51 (2), pp. 187-195 : 188-189

Artabrus erythrocephalus (C. L. Koch, 1846) , new record

( Figs. 1 A-E)

Plexippus erythrocephalus C. L. Koch, 1846: 102 , TF.1164. Artabrus erythrocephalus - Prószynski´, 1984: 1; 1987: 2-3; Zabka & Nentwig, 2002: 466.

Material examined. – 1 female, 1 male ( ZRC.ARA.49), Bukit Timah Nat. Res., Singapore, coll. D. H. Murphy, 28 Feb.1968 .

Description. – Male. Total length 11.31. Cephalothorax 4.59 long, 3.78 wide; abdomen 5.72 long, 2.70 wide. Carapace ( Fig. 1A ) yellowish brown, eye area reddish brown, with white fine and short hairs, both sides of fovea white. Eye sizes: AME 0.94, ALE 0.48, PME 0.10, PLE 0.51. Anterior eye row 2.97 wide, posterior row 3.06 wide, eye area 1.85 long. Chelicera strong, dark red, with 2 promarginal teeth and 1 retromarginal tooth. Endite and labium yellowish brown. Sternum and legs yellow. Tibiae I and II each with 4 pairs of ventral spines, metatarsi I and II each with 2 pairs of ventral spines. Leg measurements: I 11.93 (3.33+5.45+2.07+1.08); II 9.06 (2.79+4.01+1.49+0.77); II I 1 0. 0 0 (3. 3 3 + 3. 4 7 + 2. 16 + 1. 0 4); IV 9. 5 0 (2.97+3.42+2.21+0.90). Leg formula: 1342. Dorsum of abdomen yellow, center of posterior half part light yellow, with two pairs of brown spots at middle; venter yellow, with two longitudinal brown bands behind genital groove. Embolus of palpal organ ( Figs. 1D, E ) slender and whiplike; tibial apophysis short.

Female. Total length 10.05. Cephalothorax 4.41 long, 3.51 wide; abdomen 5.67 long, 2.43 wide. Dorsum of abdomen with longitudinal brown stripes on both sides, other characters as those of the male. Leg measurements: I 8.97 (2.66+3.96+1.49+0.86); II 7.71 (2.52+3.11+ 1.22+0.86); III 9. 2 7 (3. 1 5 + 3. 2 4 + 1. 8 9 + 0. 9 9); I V 8. 9 6 (2.97+3.06+2.03+0.90). Leg formula: 3142. Anterior half of epigynum ( Figs. 1B, C ) with a trapezoid depression; spermatheca elliptic in shape.

Distribution. – Singapore, Indonesia (Java, Krakatau Island).

Figures

Fig. 1. Artabrus erythrocephalus (C. L. Koch, 1846). A. male; B. epigynum, ventral view; C. same, dorsal view; D. left palp, ventral view; E. same, lateral view. Scales: A = 1.0 mm, B - E = 0.5 mm.