Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011, Wesolowska & 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: 90-93

publication ID

https://doi.org/10.5852/ejt.2018.430

publication LSID

lsid:zoobank.org:pub:5902A879-CD11-4CC3-A802-7C0D2F8059BE

DOI

http://doi.org/10.5281/zenodo.3793727

persistent identifier

http://treatment.plazi.org/id/039487C1-1627-7716-FE1F-2A6F5355FAFB

treatment provided by

Valdenar

scientific name

Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011
status

 

Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011  

Figs 406–416 View Figs 406–412 View Figs 413–416 , 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 View Figs 406–412 ), the males of S. pilosus   are almost identical to those of S. glaber   ( Figs 156–160 View Figs 156–164 ), S. hirsutus   ( Figs 239–242 View Figs 239–245 , 246–251 View Figs 246–251 ), and S. striolatus   ( Figs 463–467 View Figs 463–471 ). 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 View Figs 413–416 ), yellow clypeus with long sparse white hairs in S. glaber   ( Fig. 161 View Figs 156–164 ), black with three vertical white stripes in S. hirsutus   ( Fig. 255 View Figs 252–257 ), and entirely dark brown/black in S. striolatus   ( Fig. 468 View Figs 463–471 ). The shape of the distal projection (DP) of the functional tegulum also seems to be diagnostic (cf. Fig. 406 View Figs 406–412 with Figs 156 View Figs 156–164 , 239 View Figs 239–245 , 463 View Figs 463–471 ). The females of S. pilosus  

( Figs 411–412 View Figs 406–412 ) are most similar to and are poorly separable from those of S. hirsutus   ( Figs 262–263 View Figs 258–263 ); 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). GoogleMaps  

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 View Figs 413–416 ). Carapace yellowish brown, with two pairs of longitudinal (dorsal and lateral) yellow stripes covered with white recumbent scales;

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 View Figs 413–416 ). 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 View Figs 406–412 : 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 View Figs 406–412 : 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 View Fig ).

MMUE

Museum of Manchester University

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Stenaelurillus

Loc

Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011

Logunov, Dmitri V. & Azarkina, Galina N. 2018
2018
Loc

Stenaelurillus pilosus Wesołowska & Russell-Smith, 2011: 595

Wesolowska W. & Russell-Smith A. 2011: 595
2011