Xiruana affinis ( Mello-Leitão, 1922 ), Mello-Leitao, 1922

Oliveira, Luiz Fernando M. & Brescovit, Antonio D., 2015, A taxonomic revision of the Neotropical spider genus Xiruana Brescovit 1997 (Araneae: Anyphaenidae, Anyphaeninae), Zootaxa 3980 (2), pp. 201-229 : 220

Xiruana affinis ( Mello-Leitão, 1922)

Figs 11 G–H; 15B

Aysha affinis Mello-Leitão, 1922: 23 (female holotype from Belo Horizonte (19°49’01”S; 43°57’21”W), Minas Gerais, Brazil deposited in MNRJ 0 1453, examined).

Xiruana affinis: Brescovit, 1997: 104 .

Diagnosis. Females of Xiruana affinis resemble those of X. aymara n. sp. by the epigynal plate with the posterior border twice as wide as the anterior border, but differs by the conspicuous atrium, copulatory ducts not curved distally and spermathecae clearly separated ( Figs 11 G, H).

Description. Female (MZSP 12288). Coloration as in X. hirsuta . Total length 7.5, carapace length 3.5, width 2,1. Clypeus height 0.16. Eye diameters and interdistances: AME 0.12, ALE 0.12, PME 0.1, PLE 0.1; AME–AME 0.08, AME–ALE 0.08, PME–PME 0.24, PME–PLE 0.2, ALE–PLE 0.08. Chelicerae 1.9 long, with four promarginal teeth and five retromarginal denticles. Leg measurements: Leg I—femur 3.1/ patella 1.9/ tibia 3.5/ metatarsus 2.6/ tarsus 1.3/ total 12.4; II—3.3/ 1.3/ 3.0/ 2.3/ 1.0/ 10.9; III—2.0/ 1.0/ 1.5/ 1.7/ 1.0/ 7.2; IV—3.5/ 1.0/ 2.9/ 4.0/ 1.0/ 12.4. Leg spination: I—tibia v2-2 -2, p0, r0, metatarsus v2 -0-0, p0, r0; II—tibia v2-2 -0, p0-0-1, r0, metatarsus v2 -0-0, p0, r0; III—tibia p1-1-1, r1-1-1; IV—tibia p1-1-1, r1-1-1. Epigynum: short seminal receptacles inserted medially on copulatory ducts; spermathecae oval, fertilization ducts short ( Figs 11 G, H). Abdomen: length 4.0, epigastric furrow 0.9 from tracheal spiracle, spiracle 2.0 from base of spinnerets.

Male. Unknown.

Other material examined. BRAZIL. Minas Gerais: Rio Pardo de Minas (15°36'36"S; 42°32'24”W), 1♀, 10.I.1952, L.R. Araújo leg. ( MZSP 12288).

Distribution. Southeast Brazil ( Fig. 15 B).

Figures

FIGURE 11. Xiruana guaia n. sp.: A male left palp, ventral view; B same, retrolateral view (arrow: basal projection of median apophysis); C same, median apophysis; D male palpal tibia, retrolateral view; E same, retrodorsal view; F same, dorsal view. Xiruana affinis (Mello-Leitão): G female epigynum, ventral view; H same, dorsal view. Scale bars: A, B 0.5 mm; C 0.1 mm; H 0.25 mm.

FIGURE 15. Known distribution of Xiruana species.