Order Araneae Author Wesolowska, W. Author van Harten, A. text 2010 Dar Al Ummah Abu Dhabi Arthropod fauna of the UAE 27 69 book chapter 10.5281/zenodo.269135 5ea1f3ed-a46e-4d95-b591-9af748a2e48a 269135 Evarcha seyum Wesolowska & van Harten, 2007 Plates 5-6 , Figures 12-16 Specimens examined: Al-Ajban , 1♂ , 9 . xi 7 .xii. 2005 , LT ; 1♀ , 2 — 22 . xi . 2006 , MT . N of Ajman , 7♂ , 1♀ , 16.1 X 12 . X. 2006 , WT ; 4♂ , II- 25 . X 1.2006 , WT ; 1♂ , 9 28 .xll. 2 oo 6 , WT ; 5♂ , 1♀ , l 19.1 x. 2007 , WT ; ♂ , 3 ♀ , 21 25 . x. 2007 , WT . 7 km S of al-Jazirat al-Hamra , 1♂ , 22 .xii. 2004 , WT ; 1♀ , 41.2005 , HC ; 1♀ , 27.11.2006 , HC . Jebel Hafit , 1♀ , 8.1 V. 2005 , HC . Khor Kalba lagoon , 1♂ ‘, 7 . iv. 2005 , HC ; 1♂ , 26.11.2006 , HC . Khor al-Khwair , 2♂ , 7 l 4 . iv. 2007 , LT ; 1♀ , 2 — 13 . v . 2007 , LT . Near Mahafiz , 1♂ , 21 28.11 i. 2006 , LT . Near Quiraya , 2♂ , 5 30 .xi. 2008 , WT . Sharjah , 1♀ , I 5 . xi. 2004 , HC . Sharjah Desert Park , 1♂ , 12 21 . v. 2007 , LT ; 1♂ , 28 . v— 4 .vi. 2007 , LT ; 1♂ , 1♀ , I 30 . xl. 2 oo 8 , PT ; 1♂ , 11 .Xii. 2008 6.1.2009 , LT ; 3♂ , I «I 2.11.2009 , PT . Sharjah-Ajman , 1♂ , 2 .xii. 2004 , HC . Wadi Maidaq , 1♂ , 27 . X 1-22 .X 11.2005 , LT ; 5♂ , 28 .xi—l.x 1.2005 , WT ; 5♂ , 3 ♀ , 26 . x 1 i. 2005 - 2 . i. 2006 , WT ; 2♂ , l 4—25 .i. 2006 , WT ; 5♂ , 5♀ , 4 ~ l 5 . ii. 20 '06 , WT ; 3♂ , 1♀ , 7 14.1 ii. 2006 , WT ; 1♂ , 29.111 l 0. iv . 2006 , WT ; 4♂ , 3 ♀ , 24 .ix— 22 .x. 2006 , WT ; 4♂ , 26 . x 9 . Xi. 2006 , WT ; 4♂ , 18 . X 1 15 .xll. 2 oo 7 , PT ; 3♂ , 3 - I 7.1 i. 2008 , WT ; 1♂ , 3 - I 7.1 i. 2008 , WT ; 1♂ , 20.1 3.11.2008 , WT ; 2♂ , 8 -I 2 .Vi. 2008 , WT . Wadi Bih dam , 1 ♀ , 24—29 .vi. 2008 , LT . Wadi Safad , 3♂ , 27 . xi— 22 . xil. 2 oo 5 , WT ; 3♂ , 1♀ , 26 .xll. 2 oo 5 2.1.2006 , WT . Wadi Shawkah , 9♂ , 1♀ , 3 I. x- 27 . xi. 2006 , WT ; 1♂ ‘, 19 ~ 22 .. 2007 , WT ; 5♂ ‘, 1♀ , 9-24 . vi . 2007 , WT ; 6♂ , 3 ♀ , 5-12 .. 2007 , WT ; 11♂ ‘, 3 ♀ , 30 .vi v v 2 . 111.2007 , WT ; 2♂ , 1 ♀ , 19 28 .xi. 2007 , WT ; 2♂ ‘, 20.1 18.11.2008 , WT ; 1♂ , 3 18.11.2008 , WT ; 1♂ , V 25 . v l 2 . vi . 2008 , WT ; 2♂ , 1 ♀ , 11 .vili ll. ix . 2008 , WT . Wadi Siji , 1♂ , 241 x l 2 . x. 2006 , WT . Wadi Wurayah , 1♂ , l 2 — 14.iv. 2005 , MT, leg. T. Pape ; 3♂ , 8 - I 2 . V 1.2006 , WT ; 6♂ , 1 ♀ , l 0— 26.xi. 2006 , WT ; 10♂ , 2 ♀ , 5 30 . xi. 2008 , WT . Description. Measurements (male/female). Cephalothorax: length 2.2-2.3 / 2.4—2.6 , Width 1.6- 1.7 / 1.7 — l. 9 , height l.0/1.0— 1.1 . Abdomen: length 2.0 2.3 / 2.3 2.7 , Width 1.3 — l. 5 /l. 6 — l. 8 . Eye field: length 0.9 1.0/ 0.9 1.1 , anterior Width 1.4 l. 5 / 1.5 — l. 6 , posterior Width 1.5-1.6 / 1.6-1.7 . Male. General appearance in Plate 5 . Small spider. Carapace rounded, dark brown, darker at its posterior margin, black in vicinity of eyes. Eyes of anterior row surrounded by fawn scales. White, dense hairs form large light patch on ocular area, sometimes divided by two longitudinal thin fawn lines. On thorax White semi-lunar patch, its ends extend to clypeus. In some specimens tufts of long dark hairs fonn ‘ horns’ near lateral median eyes. Chelicerae and labium brown, gnathocoxae brown With yellowish chewing margins. Sternum brownish. Figures 12-16. Evarcha se 3 nm Wesolowska & van Harten. 12: Pal P al or g an in ventral view'› 13: Same in dorsoventral. view; 14: Same. 1n lateral. view: 15:. Epigyne; 16: Internal structure of. epıgyne. Abdomen dark brown with white anterior margin and wide longitudinal median band not extending to its end ( Plate 5 ). Venter yellow with large triangular dark grey spot. Dense hairs in background colour cover whole abdomen, among them sparse long brown setae. Spinnerets dark. Legs light brown with darker rings, basal parts of femora yellow. First pair in some specimens dark brown. Spines numerous, brownish. Pedipalps yellowish brown. Bulb rounded, single tibial apophysis short, obtuse on its tip ( Fig. 14 ). Embolus with accompanying spatula-shaped structure ( Figs 12, 13 ). Female. General appearance in Plate 6 . Slightly larger than male, colouration lighter. Carapace brown, near eyes darker, densely clothed in whitish hairs, among them sparse brown bristles, denser at anterior eyes. Tufts of long dark setae near smallest eyes. Clypeus with white hairs. Abdomen yellowish, with median streak formed by few pairs of poorly contrasting whitish spots ( Plate 6 ). Epigyne with central rounded depression and two pockets located laterally ( Fig. 15 ). Internal structure of epigyne as in Figure 16 , seminal ducts weakly sclerotised, receptacles large, strongly sclerotised, multi-chambered. Distribution: Hitherto known only from Yemen. New to the UAE .