Stenaelurillus pseudoguttatus, Logunov & Azarkina, 2018

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 : 93-95

Stenaelurillus pseudoguttatus sp. nov.

urn:lsid:zoobank.org:act:210AF195-E8CB-4FFB-9509-9CDBDC3B58AB Figs 417–425 , 514

Mashonarus guttatus Wesołowska & Cumming, 2002: 167 , figs 1–19 (in part, paratype ♂ from Namibia).

Diagnosis

By the conformation of the copulatory organs (the shape of the embolus and the developed cymbial lateral projection), S. pseudoguttatus sp. nov. is most similar to S. brandbergensis comb. nov. and S. guttatus comb. nov. (cf. Figs 90–94 and 165–170 ), but can easily be distinguished from both related species by its having the longest, sword-shaped embolus, the largest open cymbial pocket and by the absence of a distal projection on the functional tegulum. The female of S. pseudoguttatus sp. nov. remains unknown.

Etymology

The specific epithet is a compound form of the Greek Ψϵυδο (‘pseudo’), ‘false’, and the Latin word ‘ guttatus ’, ‘speckled’; the name is a reflection of the fact that the holotype of this species was found in the original type series of S. guttatus comb. nov.

Material examined

Holotype

NAMIBIA: ♂, male paratype of Mashonarus guttatus Wesołowska & Cumming, 2002 , Rundu-Kavango , ca 17°55′ S, 19°45′ E, Okavango Riv., May 1979, M.E. Baddeley leg. ( MRAC 152.151 ).

Remarks

The series of paratypes of Mashonarus guttatus turned out to be heterogenous and contained one male that belonged to a different species, which is described herein as new.

Description

Male (holotype)

Measurements: carapace: 2.28 long, 1.63 wide, 0.93 high. Abdomen: 2.05 long, 1.38 wide. Ocular area: 1.00 long, 1.30 wide anteriorly, 1.23 wide posteriorly. Cheliceral length 0.75. Clypeal height 0.13. Diameter of AME 0.38. Length of leg segments: I 1.25 + 0.65 + 0.83 + 0.70 + 0.50 (3.93); II 1.25 + 0.63 + 0.71 + 0.70 + 0.38 (3.67); III 1.60 + 0.70 + 1.00 + 1.18 + 0.45 (4.93); IV 1.45 + 0.63 + 1.00 + 1.28 + 0.53 (4.89). Leg formula III,IV,I,II. Leg spination: I: Fm d 0-1-1-4; Tb pr 1-1, v 1-1-2ap; Mt pr 1ap, v 2-2ap. II: Fm d 0-1-1-5; Tb pr 1-1, v 1-1-2ap; Mt pr 1-1ap, v 2-2ap. III: Fm d 0-1-2-5; Pt pr 0-1-0; Tb d 1-0, pr and rt 1-1, v 1-1-2ap; Mt d 0-1-0, pr and rt 1-0-2ap, v 0-2-2ap. IV: Fm d 0-1-1-3; Pt pr 0-1-0; Tb d 1-0- 0, pr and rt 1-1-1, v 0-1-2ap; Mt pr, rt and v 1-1-2ap. Coloration (in alcohol; Figs 422–425 ). Carapace yellowish brown, with black eye field, densely covered with long brown recumbent scales; there are two longitudinal white narrow stripes; clypeus yellow, covered with yellow hairs. Sternum yellow, tinged with brown and densely covered with white hairs. Endites and labium yellow. Chelicerae yellowish brown. Abdomen: dorsum dark brown, with three pairs of white spots; sides and venter grayish yellow. Book-lung covers yellow. Spinnerets yellow grayish. All legs: coxae and trochanters yellow, Fm yellow on their basal halves and brown on their distal halves, the remaining segments yellowish brown. Palps yellowish brown. Palpal structure as in Figs 417–421 ; VTA bulge-shaped; RTA straight, stiletto-shaped, directed anteriad; the cymbium simple, with a poorly-marked cymbial lateral process; the tegulum small, poorly marked, without a visible tegular process; the functional tegulum narrow-elongated, with a well-developed, wide and obtuse proximal (PP) projection and without a distal projection; the embolus long, sword-shaped, with a wide round base.

Female

Unknown.

Distribution

Namibia, the type locality only ( Fig. 514 ).

Figures

Figs 417–425. Stenaelurillus pseudoguttatus sp. nov., paratype, ♂, of Mashonarus guttatus Wesołowska & Cumming, 2002; MRAC 152.151). 417. Male palp, ventral view. 418. Male palp, retrolateral view. 419–421. Embolic division. 419. Retrolateral view. 420. Dorsal view. 421. Median view. 422–425. General appearance. Scale bars: 417–421 = 0.1 mm; 422–425 = 1 mm.

Figs 90–98. Stenaelurillus brandbergensis (Wesołowska, 2006), paratype, ♂ from Namibia (MRAC 216.021). 90. Palp, ventral view. 91. Palp, retrolateral view. 92. Embolic division, retrolateral view. 93. Embolic division, dorsal view. 94. Embolic division, median view. 95–98. General appearance. Abbreviations: see Material and methods. Scale bars: 90–94 = 0.1 mm; 95–98 = 1 mm.

Figs 165–172. Stenaelurillus guttatus (Wesołowska & Cumming, 2002) comb. nov., holotype, ♂ (165–170) and paratype, ♀ (171–172). 165. Male palp, ventral view. 166. Male palp, retrolateral view. 167. Male palp, dorsal view. 168. Embolic division, dorsal view. 169. Embolic division, median view. 170. Embolic division, retrolateral view. 171. Epigyne, ventral view. 172. Spermathecae, dorsal view. Abbreviations: see Material and methods. Scale bars: 0.1 mm.

Fig. 514. Collecting localities of seven African species of Stenaelurillus Simon, 1885.