Eusparassus arabicus, Moradmand, 2013

Moradmand, Majid, 2013, The stone huntsman spider genus Eusparassus (Araneae: Sparassidae): systematics and zoogeography with revision of the African and Arabian species, Zootaxa 3675 (1), pp. 1-108 : 19-24

publication ID	https://doi.org/ 10.11646/zootaxa.3675.1.1
publication LSID	lsid:zoobank.org:pub:7F4D5550-8B85-4694-9482-8A125E9A2650
DOI	https://doi.org/10.5281/zenodo.6949800
persistent identifier	https://treatment.plazi.org/id/03B787E9-8231-1344-25A5-822EFE7AFD50
treatment provided by	Felipe
scientific name	Eusparassus arabicus
status	sp. nov.

Treatment

Eusparassus arabicus View in CoL spec. nov.

Figs 7–8 View FIGURE 7 View FIGURE 8 , 47d–e View FIGURE 47 , 59e–f View FIGURE 59

Type material. Holotype: male, SAUDI ARABIA: Mintaqat ar Riyad: Wadi Mizbil [N 24˚ 30', E 46˚ 25'], 13 April 1977, W. Büttiker leg. ( NMB-ARAN 20666 ).

Paratypes (4♂, 1♀): SAUDI ARABIA: 1♂, same data as for holotype ( SMF) ; Mintaqat al Hail: 1♀, Wadi Naqben [in Jebel Aja Mountain], N 27˚ 41', E 41˚ 38', 1050 m, 27 May 1981, W. Büttiker leg. ( NMB-ARAN 20667 ) ; Mintaqat Makkah: 1♂, Abha, Asir Mountains , 2200 m, April 1977, Dr. C. Lowe leg. ( NHM) ; 1♂, Abulat Island, Red Sea, “Mission de la Calypso Mer Rouge 1952”, Cherbounier leg. ( MNHN) ; UNITED ARAB EMIRATES: Dubayy: 1♂, Barasti, Jumeriah, 1964, Peck leg. ( AMNH) .

Etymology. The specific name is taken from the type locality. Adjective.

Diagnosis. This is the only walckenaeri group member with PLE distinctly larger than AME (~1.2 times) ( Figs 7d View FIGURE 7 , 47d–e View FIGURE 47 ); male palp closely similar to that of E. walckenaeri (especially ET) but can be easily recognized by the more slender and longer dRTA and less developed vRTA ( Figs.7a–b View FIGURE 7 ) [see also diagnosis for walckenaeri species group above].

Description. Male (ranges: n=5, single measurement: holotype):

Males medium-sized; total length 13.2, prosoma length 6.7, prosoma width 5.8, anterior width of prosoma 2.8, opisthosoma length 6.5, opisthosoma width 4.6. Eye diameters: AME 0.44, ALE 0.50, PME 0.46, PLE 0.53, eye interdistances: AME-AME 0.14, AME-ALE 0.02, PME-PME 0.30, PME-PLE 0.33, AME-PME 0.38, ALE-PLE 0.25, clypeus height at AME 0.35, clypeus height at ALE 0.40.

Chelicerae. Chelicerae with 2 anterior and 3 to 4 posterior teeth, cheliceral furrow with intermarginal denticles ( Fig. 7e View FIGURE 7 ).

Legs. Leg formula: II IV I III. Measurements of palp and legs: Palp 10.6 [3.6, 1.6, 2.2, 3.2], I 40.4 [10.7, 4.2, 11.2, 11.5, 2.8], II 44.9 [12.1, 4.2, 12.8, 12.7, 3.1], III 38.6 [11.1, 3.7, 10.9, 10.3, 2.6], IV 41.4 [12.0, 4.0, 11.4, 11.3, 2.7].

Spination. Palp 131, 001, 1111; Legs: Femur I– III 323 , IV 322 ; Patella I – IV 001 /101; Tibia I–IV 2124 /2224; Metatarsus I–III 2024, IV 3036.

Palp. As in diagnosis with generally elongated and slender palp, cymbium slightly longer than tibia, dRTA elongated, vRTA not pointed ( Figs 7a–b View FIGURE 7 ); ET retrolaterad and twisted at its distal end, ET covered partially by conductor ( Fig. 7c View FIGURE 7 ).

Female (n=1, paratype):

Large sized; total length: 21.3, prosoma length 8.5, prosoma width 7.6, anterior width of prosoma 4.3, opisthosoma length 12.8, opisthosoma width 8.5. Eye diameters: AME 0.51, ALE 0.56, PME 0.54, PLE 0.63. Eye interdistances: AME-AME 0.15, AME-ALE 0.01, PME-PME 0.41, PME-PLE 0.46, AME-PME 0.53, ALE-PLE 0.41, clypeus height at AME 0.42, clypeus height at ALE 0.55.

Chelicerae. Chelicerae with 2 anterior and 3 posterior teeth; cheliceral furrow with 10 intermarginal denticles. Legs. Leg formula: II IV I III. Measurements of palp and legs: Palp 11.6 [3.5, 1.7, 2.3, 4.1], I 36.4 [10.2, 4.3, 9.4, 9.8, 2.7], II 40.4 [11.3, 4.6, 11.5, 1.3, 2.7], III 34.8 [10.5, 4.0, 9.3, 8.6, 2.4], IV 38.3 [11.0, 4.0, 10.2, 10.5, 2.6].

Spination. Palp 131, 001, 1111, 1013; Legs: Femur I– III 323 , IV 322 ; Patella I–II 000, III–IV 001; Tibia I–IV 2024; Metatarsus I–III 2024, IV 3036.

Epigyne/vulva. EF slightly longer than wide, EF fused anterioly with a bridge but AMLL not encircling MS entirely ( Fig. 8a View FIGURE 8 ); CD membranous ( Fig. 8b View FIGURE 8 ), TL spherical and robust ( Fig. 8c View FIGURE 8 ).

Colouration [in ethanol]. Reddish to yellowish brown with darker W-shaped patches on prosoma, remains of cardiac mark on dorsal opisthosoma and legs with pale bands ( Figs 47d, e View FIGURE 47 ).

Known geographical distribution and habitat. Endemic to Northern Arabian Peninsula collected from wadis and oases ( Fig. 70a View FIGURE 70 ).