Stenaelurillus fuscatus Wesołowska & Russell-Smith, 2000, Wesolowska & Russell-Smith, 2000

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: 37-41

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.3793751

persistent identifier

http://treatment.plazi.org/id/039487C1-165A-7762-FE68-29A55477FCA5

treatment provided by

Valdenar

scientific name

Stenaelurillus fuscatus Wesołowska & Russell-Smith, 2000
status

 

Stenaelurillus fuscatus Wesołowska & Russell-Smith, 2000  

Figs 136–155 View Figs 136–145 View Figs 146–151 View Figs 152–155 , 512

Stenaelurillus fuscatus Wesołowska & Russell-Smith, 2000: 101   , figs 277–280 (D♂); ♂ holotype in MRAC, examined.

Diagnosis

Of the described species, S. fuscatus   is most similar to S. darwini   ( Figs 105–110 View Figs 105–110 ) and S. uniguttatus   (see Wesołowska 2014b: fig. 13). The males of S. fuscatus   differ from both related species in having a very wide, square distal projection (DP) on the functional tegulum and a different arrangement of bunches of black shining hairs on the palpal tibia; the females of S. fuscatus   can be distinguished from those of S. darwini   by the much wider insemination ducts.

Material examined

Holotype

TANZANIA: ♂, Mkomazi GR, Umba River , ca 4°00′ S, 38°00′ E, riverine scrub, 18 Apr. 1995, A. Russell-Smith leg. ( MRAC 207.953 View Materials ). GoogleMaps  

Other material

KENYA: 9 ♂♂, 8 ♀♀, Kenya Coast, Taita Discovery Centre, ca 03°48′ S, 38°38′ E, pitfall traps, 6–24 Jan. 2001, E. Selempo leg. ( MRAC 213.080, MRAC 213.133, MRAC 212.904, MRAC 213.041); 1 ♀, Mathews Range forest, ca 03°15′ N, 37°20′ E, 1294 m a.s.l., on rocks, 11 Dec. 2002, D. van den Spiegel leg. ( MRAC 212.576).

Description

Male (holotype)

Measurements: carapace: 2.60 long, 2.00 wide, 1.35 high. Abdomen: 2.80 long, 2.00 wide. Ocular area: 1.10 long, 1.60 wide anteriorly, 1.55 wide posteriorly. Cheliceral length 0.70. Clypeal height 0.30.

Diameter of AME 0.45. Length of leg segments: I 1.20 + 0.75 + 0.85 + 0.60 + 0.50 (3.90); II 1.20 + 0.75 + 0.80 + 0.65 + 0.50 (3.90); III 1.70 + 0.95 + 1.20 + 1.45 + 0.60 (5.90); IV 1.70 + 0.90 + 1.15 + 1.60 + 0.70 (6.05). Leg formula IV,III,II/I. Leg spination: I: Fm d 0-1-1-5; Pt pr 1; Tb pr 1-1, v 1-2-2ap; Mt pr and rt 1-1ap, v 2-2ap. II: Fm d 0-1-2-5; Pt pr 1; Tb pr 1-1, v 1-1-2ap; Mt pr and rt 1-1-1ap, v 2-2ap. III: Fm d 1-0-2-5; Pt pr and rt 1; Tb d 1-0-0, pr and rt 1-1-1-1, v 1-0-2ap; Mt d 2-2-0, pr and rt 1-0-2ap, v 0-2-2ap. IV: Fm d 1-0-1-5; Pt pr and rt 1; Tb d 1-0-0, pr and rt 1-1-1-1, v 1-0-2ap; Mt d 2-2-0, pr 1-1-2ap, rt 1-0-2ap, v 0-2-2ap. Coloration (in alcohol; Figs 146–151 View Figs 146–151 ). Carapace dark brown, covered with dark brown recumbent scales, with two longitudinal stripes of white scales running from PLEs to approximately ¼ of the carapace length. Clypeus brownish yellow, covered with white/transparent hairs. Sternum brownish yellow. Endites and labium brownish yellow. Chelicerae yellow-brown, covered with short dark brown hairs. Abdomen: dorsum dark brown, with dark brown scutum occupying ¾ of the abdomen length, covered with dark brown scales and with a small white spot behind the scutum; venter grey-yellow; sides with long hairs (brown dorsally and white ventrally). Book-lung covers yellow. Spinnerets yellow-brown. Legs I dark brown, covered with dark brown hairs. The remaining legs brown, covered with dark brown hairs. Palps brown, covered with dark brown hairs, except Fm retro-apically and Pt, Tb and cymbium prolaterally, which are densely covered with white hairs. Palpal structure as in Figs 136–142 View Figs 136–145 : tibial apophysis with bunches of black shining hairs; VTA bulge-shaped; RTA hookshaped; the cymbium simple, without a cymbial lateral process; the tegulum small, poorly marked, without a tegular process; the functional tegulum elongated, with well-developed, pointed proximal (PP) and very wide, square distal (DP) projections; the embolus thick, hook-shaped, with a heavy base.

Female (MRAC 213.133)

Measurements: carapace: 2.50–3.00 long, 1.95–2.35 wide, 1.30–1.50 high. Abdomen: 3.00–3.60 long, 2.60–2.95 wide. Ocular area: 1.00–1.20 long, 1.50–1.75 wide anteriorly, 1.45–1.70 wide posteriorly. Cheliceral length 0.60–0.70. Clypeal height 0.25–0.30. Diameter of AME 0.40–0.50. Length of leg segments (big female): I 1.50 + 0.90 + 0.80 + 0.60 + 0.55 (4.35); II 1.50 + 0.90 + 0.85 + 0.70 + 0.60 (4.55); III 2.20 + 1.10 + 1.50 + 1.70 + 0.70 (7.20); IV 2.15 + 1.00 + 1.45 + 1.90 + 0.75 (7.25). Leg formula IV,III,II,I. Leg spination: I: Fm d 0-1-1-5; Pt pr 1; Tb pr 1-1, v 1-1-2ap; Mt pr 1-1ap, rt 1-1ap, v 2-2ap. II: Fm d 0-1-2-5; Pt pr 1; Tb pr 1-1, v 1-1-2ap; Mt pr and rt 1-1ap, v 2-2ap. III: Fm d 1-0-2-5; Pt pr and rt 1; Tb d 1-0-0, pr and rt 1-1-1-1, v 1-0-2ap; Mt d 2-2-0, pr and rt 1-0-2ap, v 0-2-2ap. IV: Fm d 1-0-1-5; Pt pr and rt 1; Tb d 1-0-0, pr and rt 1-1-1-1, v 1-0-2ap; Mt d 2-2-0, pr 1-1-2ap, rt 1-0-2ap, v 1-2-2ap. Coloration (in alcohol; Figs 152–155 View Figs 152–155 ). Carapace dark brown, laterally covered with dark brown recumbent scales, dorsally with brown-yellow recumbent scales, with two longitudinal white stripes of scales running from PLEs to approximately ¼ of the abdomen length. Clypeus and cheeks yellowbrown, sparsely covered with brownish hairs. Endites and labium brown-yellow. Chelicerae brown. Abdomen: dorsum brown, with a poorly marked pattern of a central inverted triangle (its apex is directed posteriad) and an oval spot of white scales having a small brown dot in its centre; venter brownish yellow, with numerous brown speckles. Book-lung covers yellow. Spinnerets brownish yellow. Legs brown, covered with dark brown hairs and bristles. Palps yellow, sparsely covered with dark brown hairs and bristles. Epigyne and spermathecae as in Figs 143–145 View Figs 136–145 ; the epigynal plate flat, without visible structures; the epigynal pocket poorly marked (as a wide invagination of the epigastric furrow); the copulatory openings as ovoid holes, widely separated and facing laterad; the insemination ducts very wide and short, running towards the median line; the primary spermathecae ovoid.

Distribution

A few localities in Kenya and Tanzania ( Fig. 512 View Fig ) ( Wesołowska & Russell-Smith 2000; present data).

MRAC

Musée Royal de l’Afrique Centrale

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Stenaelurillus

Loc

Stenaelurillus fuscatus Wesołowska & Russell-Smith, 2000

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

Stenaelurillus fuscatus Wesołowska & Russell-Smith, 2000: 101

Wesolowska W. & Russell-Smith A. 2000: 101
2000