Evarcha seyum Wesolowska & van Harten, 2007,

Wesolowska, W. & van Harten, A., 2010, Order Araneae, Arthropod fauna of the UAE, Abu Dhabi: Dar Al Ummah, pp. 27-69: 32-34

publication ID

http://doi.org/ 10.5281/zenodo.269135

DOI

http://doi.org/10.5281/zenodo.4428607

persistent identifier

http://treatment.plazi.org/id/FD558782-130F-FFF6-FF77-FB70CF54FDBA

treatment provided by

Jeremy

scientific name

Evarcha seyum Wesolowska & van Harten, 2007
status

 

Evarcha seyum Wesolowska & van Harten, 2007  Plates 5-6, Figures 12-16View 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.

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. 14View Figures 12 - 16). Embolus with accompanying spatula-shaped structure ( Figs 12, 13View Figures 12 - 16). 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. 15View Figures 12 - 16). Internal structure of epigyne as in Figure 16View Figures 12 - 16, seminal ducts weakly sclerotised, receptacles large, strongly sclerotised, multi-chambered.

Distribution: Hitherto known only from Yemen. New to the UAE.

UAE

Canada, Alberta, Edmonton, University of Alberta, E.H. Strickland Entomological Museum