Redefinition and partial revision of the genus Stenaelurillus Simon, 1886 (Arachnida, Araneae, Salticidae) Author Logunov, Dmitri V. Author Azarkina, Galina N. text European Journal of Taxonomy 2018 2018-05-02 430 1 126 journal article 22376 10.5852/ejt.2018.430 cfc8b353-070f-4081-a954-8ee7cec84a16 3787622 5902A879-CD11-4CC3-A802-7C0D2F8059BE Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011 Figs 406–416 , 514 Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011: 595 , figs 161–166, 244–246 (D♂ ♀ ); ♂ holotype in BMNH, examined. Diagnosis By the conformation of the copulatory organs ( Figs 406–410 ), the males of S. pilosus are almost identical to those of S. glaber ( Figs 156–160 ), S. hirsutus ( Figs 239–242 , 246–251 ), and S. striolatus ( Figs 463–467 ). Males of all these species can easily be distinguished by the clypeal colour pattern: with a transverse dark brown band in S. pilosus ( Fig. 413 ), yellow clypeus with long sparse white hairs in S. glaber ( Fig. 161 ), black with three vertical white stripes in S. hirsutus ( Fig. 255 ), 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 (cf. Fig. 406 with Figs 156 , 239 , 463 ). The females of S. pilosus 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 411–412 ) are most similar to and are poorly separable from those of S. hirsutus ( Figs 262–263 ); the shape of the primary spermathecae seems to be diagnostic: round in S. pilosus and elongated, sacshaped in S. hirsutus . Material examined Holotype NIGERIA : ♂, Ibadan , IITA, 7°22′39.1″ N , 3°56′49.3″ E , fallow bush, 8 Feb. 1973 , A. Russell-Smith leg. ( BMNH ). Paratypes NIGERIA : 4 ♂♂, 4 ♀♀ , together with the holotype ( BMNH ). Other material NIGERIA : 2 ♂♂, Oyo State , Ibadan, IITA, 7°22′39.1″ N , 3°56′49.3″ E , fallow bush, 27 Apr. 1973 , A. Russell-Smith leg. ( MMUE G7583.5). Description Male ( holotype ) Measurements: carapace: 2.55 long, 1.85 wide, 1.40 high. Abdomen: 2.40 long, 1.70 wide. Ocular area: 1.10 long, 1.53 wide anteriorly, 1.48 wide posteriorly. Cheliceral length 0.53. Clypeal height 0.38. Diameter of AME 0.43. Length of leg segments: I 1.28 + 0.68 + 0.70 + 0.60 + 0.53 (3.79); II 1.25 + 0.69 + 0.65 + 0.63 + 0. 48 (3.70); III 1.88 + 0.88 + 1.10 + 1.28 + 0.53 (5.67); IV 1.55 + 0.70 + 1.05 + 1.28 + 0.53 (5.11). Leg formula III,IV,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 0-1-1-5; Pt pr 0-1-0; Tb pr 1-1, v 1-1-2ap; Mt pr 1-1ap, rt 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, rt 1-1-1-1, v 1-0-2ap; Mt d 1-1, 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 1-1-1, rt 1-2-1, v 1-0-2ap; Mt pr 1-2ap, rt 1-1-1, v 0-1-1-2ap. Coloration (in alcohol; Figs 413–416 ). Carapace yellowish brown, with two pairs of longitudinal (dorsal and lateral) yellow stripes covered with white recumbent scales; Figs 413–416. Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011 , holotype , ♂, general appearance. Scale bars: 1 mm . sides (on their front halves) bear bunches of dense brown hairs. Eye field brown, with a mane-like bunch of brownish and transparent hairs. Eyes of the first row are surrounded by dense white hairs, clypeus covered with dark brown hairs and scales ( Fig. 416 ). Sternum light yellow, densely covered with white hairs. Labium, endites and chelicerae light yellow. Abdomen: dorsum dark brown, with paired white spots; sides and venter light yellow. Book-lung covers light yellow, spinnerets brownish. All legs yellow, Fm III–IV apically with patches of brown scales. All palps light yellow. Palpal structure as in Figs 406– 410 : VTA bulge-shaped, poorly marked; RTA straight, with wide base and sharpened, stiletto-like tip; the cymbial lateral process (CLP) is poorly marked; the tegulum small, poorly marked, with a short, cone-shaped tegular process (TP); the functional tegulum with a well-developed proximal projection (PP), its distal projection (DP) flat and bifurcated; the embolus short, ribbon-shaped, with a wide base. Female (a paratype ) Measurements: carapace: 3.10 long, 2.25 wide, 1.80 high. Abdomen: 2.85 long, 2.20 wide. Ocular area: 1.35 long, 1.73 wide anteriorly, 1.65 wide posteriorly. Cheliceral length 0.78. Clypeal height 0.29. Diameter of AME 0.48. Length of leg segments: I 1.50 + 0.80 + 0.78 + 0.60 + 0.53 (4.21); II 1.50 + 0.83 + 0.78 + 0.68 + 0.48 (4.27); III 2.23 + 1.05 + 1.42 + 1.60 + 0.65 (6.95); IV 2.00 + 0.93 + 1.33 + 1.65 + 0.68 (6.59). Leg formula III,IV,II,I. 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, v 1-1-2ap; Mt pr 1-1ap, rt 1ap, v 2-2ap. III: Fm d 0-1-2-5; Pt pr and rt 0-1-0; Tb pr and rt 1-1-1-1, v 1-2ap; Mt d 0-1-0, pr 1-1-2ap, rt 1-0-2ap, v 0-1-2ap. IV: Fm d 0-1-1-5; Pt pr and rt 0-1-0; Tb d 1-0, pr and rt 1-1-1, v 1-2ap; Mt pr and rt 1-1-2ap, v 0-1-1-2ap. Coloration (in alcohol) as in the male, except for the following: eye field without a manelike bunch of hairs; carapace sides without lateral bunches of brown hairs; clypeus yellow, with sparse white hairs. Epigyne and spermathecae as in Figs 411–412 : the epigynal plate flat, its rear edge visibly concave; epigynal pocket present, narrow and deep; the copulatory openings resemble transverse slits and are widely separated; the insemination ducts very short, inconspicuous in dorsal view; the primary spermathecae large and round. Distribution The type locality only ( Fig. 514 ).