Stenaelurillus glaber Wesołowska & Russell-Smith, 2011

Logunov, Dmitri V. & Azarkina, Galina N., 2018, Redefinition and partial revision of the genus Stenaelurillus Simon, 1886 (Arachnida, Araneae, Salticidae), European Journal of Taxonomy 430, pp. 1-126 : 41-43

Stenaelurillus glaber Wesołowska & Russell-Smith, 2011

Figs 156–164 , 511

Stenaelurillus glaber Wesołowska & Russell-Smith, 2011: 593 , figs 151–152, 238–240 (D♂); ♂ holotype in BMNH, examined.

Diagnosis

By the conformation of the copulatory organs ( Figs 156–160 ), the males of S. glaber are almost identical to those of S. hirsutus ( Figs 239–242 , 246–251 ), S. pilosus ( Figs 406–410 ) and S. striolatus ( Figs 463– 467 ). Males of all these species can easily be distinguished by the clypeal colour pattern: yellow clypeus with long sparse white hairs in S. glaber ( Fig. 161 ), black with three vertical white stripes in S. hirsutus ( Fig. 255 ), with a transverse dark brown band in S. pilosus ( Fig. 413 ), and entirely dark brown/black in S. striolatus ( Fig. 468 ). The shape of the distal projection (DP) of the functional tegulum also seems to be diagnostic (compare Fig. 156 with Figs 246 , 406 , 463 ). The female of S. glaber has not been described yet and cannot be diagnosed now.

Material examined

Holotype

NIGERIA: ♂, Kwara State, Mokwa , 9°17′34.1″ N, 5°03′16.8″ E, cultivated savanna, in dead leaves, 13 Jul. 1974, A. Russell-Smith leg. ( BMNH).

Paratype

NIGERIA: 1 ♂, same collecting data as for holotype ( BMNH).

Description

Male (holotype)

Measurements: carapace: 2.55 long, 1.75 wide, 1.30 high. Abdomen: 2.05 long, 1.40 wide. Ocular area: 1.18 long, 1.60 wide anteriorly, 1.56 wide posteriorly. Cheliceral length 0.50. Clypeal height 0.20. Diameter of AME 0.50. Length of leg segments: I 1.28 + 0.70 + 0.75 + 0.60 + 0.53 (3.86); II 1.30 + 0.63 + 0.75 + 0.58 + 0.50 (3.76); III 1.95 + 0.90 + 1.25 + 1.40 + 0.58 (4.08); IV 1.68 + 0.70 + 1.13 + 1.38 + 0.60 (5.49). Leg formula IV,III,I,II. Leg spination: I: Fm d 0-1-1-5; Pt pr 0-1-0; Tb pr 1-1, v 1-2- 2ap; Mt pr and rt 1ap, v 2-2ap. II: Fm d 0-1-2-5; Pt pr 0-1-0; Tb pr 1-1-1, rt 0-1-1, v 1-1-2ap; Mt pr and rt 1-1ap, v 2-2ap. III: Fm d 0-1-2-4; Pt pr and rt 0-1-0; Tb d 1-0-0, pr 1-1-1-1, rt 1-1-1, v 1-0-2ap; Mt d 1-0-0, pr and rt 1-0-2ap, v 0-2-2ap. IV: Fm d 0-1-1-4; Pt pr and rt 0-1-0; Tb d 1-0-0, pr and rt 1-1-1, v 1-0-2ap; Mt d 1-0-0, pr and rt 1-1-2ap, v 0-2-2ap. Coloration (in alcohol; Figs 161–164 ). Carapace yellowish brown, densely covered with recumbent brown scales, with two pairs (dorsal and marginal) of wide longitudinal white stripes of recumbent scales. Eye field dark brown, with numerous short protruding brown bristles. Clypeus brownish yellow, sparsely covered with long white hairs. Eyes of the first row are ventrally edged by dense white hairs and scales. Sternum, labium, endites and chelicerae yellow. Abdomen: dorsum dark brown, with three large white spots on its rear half; sides and venter greyish yellow. Book-lung covers yellow. Spinnerets brown. Legs yellow, but all Fm dorso-distally with patches of brown recumbent scales. Palps entirely yellow. Palpal structure as in Figs 156–160 : VTA bulge-shaped, poorly marked; RTA straight, stiletto-shaped, directed anteriad, with a wide base; the cymbial lateral process (CLP) absent; the tegulum small, with a short, cone-shaped tegular process (TP); the functional tegulum swollen, with well-developed proximal (PP) and distal (DP) projections; the embolus short, ribbon-shaped, with a wide round base.

Female

Unknown.

Distribution

The type locality only ( Fig. 511 ).

Figures

Figs 156–164. Stenaelurillus glaber Wesołowska & Russell-Smith, 2011, holotype, ♂ (156–160) and paratype, ³ from Nigeria (Mokwa) (161–164). 156. Male palp, ventral view. 157. Male palp, retrolateral view. 158. Embolic division, dorsal view. 159. Embolic division, median view. 160. Embolic division, retrolateral view. 161–164. General appearance. Abbreviations: see Material and methods. Scale bars: 156–160 = 0.1 mm; 161–164 = 1 mm.

Figs 239–245. Stenaelurillus hirsutus Lessert, 1927, holotype. 239. Male palp, ventral view. 240. Embolic division, retrolateral view. 241. Embolic division, dorsal view. 242. Embolic division, median view. 243–245. General appearance. Abbreviations: see Material and methods. Scale bars: 239–242 = 0.1 mm; 243–245 = 1 mm.

Figs 246–251. Stenaelurillus hirsutus Lessert, 1927 (holotype of Stenaelurillus cristatus Wesołowska & Russell-Smith, 2000). 246. Male palp, ventral view. 247. Male palp, retrolateral view. 248. Male palp, dorsal view. 249. Embolic division, ventral view. 250. Embolic division, median view. 251. Embolic division, retrolateral view. Scale bars: 0.1 mm.

Figs 406–412. Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011, holotype, ♂, and paratype, ♀. 406. Male palp, ventral view. 407. Male palp, retrolateral view. 408–410. Embolic division. 408. Dorsal view. 409. Median view. 410. Retrolateral view. 411. Spermathecae, dorsal view. 412. Epigyne, ventral view. Scale bars: 0.1 mm.

Figs 463–471. Stenaelurillus striolatus Wesołowska & Russell-Smith, 2011, holotype, ♂. 463. Palp, ventral view. 464. Palp, retrolateral view. 465. Embolic division, dorsal view. 466. Embolic division, median view. 467. Embolic division, retrolateral view. 468–471. General appearance. Scale bars: 463– 467 = 0.1 mm; 468–471 = 0.5 mm.

Figs 252–257. Stenaelurillus hirsutus Lessert, 1927 (holotype of Stenaelurillus cristatus Wesołowska & Russell-Smith, 2000) from Tanzania (Mkomazi GR), general appearance. Scale bars: 1 mm

Figs 413–416. Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011, holotype, ♂, general appearance. Scale bars: 1 mm.

Fig. 511. Collecting localities of six African species of Stenaelurillus Simon, 1885.