Xiruana tapirape, Oliveira, Luiz Fernando M. & Brescovit, Antonio D., 2015

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 : 223

Xiruana tapirape new species

Figs 12 G–H; 16B

Type material. Female holotype from Barra do Tapirapé (10°37’35.21”S; 51°02’47.64”W), Mato Grosso, Brazil, 11–30.XI.1960, B. Malkin leg., deposited in AMNH.

Etymology. The specific name is a noun in apposition taken from the type locality.

Diagnosis. Females of Xiruana tapirape n. sp. are readily recognized by the cordiform epigynal plate ( Fig. 12 G).

Description. Female (Holotype). Coloration as in X. hirsuta . Total length 5.57, carapace length 2.58, width 1.5. Clypeus height 0.08. Eye diameters and interdistances: AME 0.14, ALE 0.14, PME 0.12, PLE 0.14; AME– AME 0.06, AME–ALE 0.04, PME–PME 0.2, PME–PLE 0.10, ALE–PLE 0.04. Chelicerae 1.3 long, with four promarginal teeth and five retromarginal denticles. Leg measurements: Leg I—femur 2.2/ patella 1.0/ tibia 2.6/ metatarsus 2.0/ tarsus 1.1/ total 8.9; II—2.1/ 1.0/ 2.0/ 1.7/ 0.9/ 7.7; III—1.6/ 0.6/ 1.0/ 1.3/ 0.5/ 5.0; IV—2.5/ 1.0/ 2.1/ 2.7/ 0.8/ 9.1. Leg spination: I—tibia v2-2 -0, p0, r0, metatarsus v2 -0-0, p0, r0; II—tibia v1-2 -0, p0-1-0, r0, metatarsus v2 -0-0, p0, r0; IV—tibia p1-1-1, r1-1-1. Abdomen: length 2.2, epigastric furrow 0.5 from tracheal spiracle, spiracle 2.0 from base of spinnerets. Epigynum: seminal receptacles contiguous to the spermathecae; copulatory ducts short and curved; fertilization ducts longer than the width of the oval spermathecae ( Fig. 12 H).

Male. Unknown.

Other material examined. Only the holotype.

Distribution. Known only from the type locality ( Fig. 16 B).

Figures

FIGURE 12. Xiruana lusitania n. sp.: A male left palp, ventral view; B same, retrolateral view; C same, median apophysis; D male palpal tibia, retrolateral view; E same, retrodorsal view; F same, dorsal view. Xiruana tapirape n. sp.: G female epigynum, ventral view; H same, dorsal view. Scale bars: A 0.5 mm; B 0.3 mm; C 0.1 mm; H 0.25 mm.

FIGURE 16. Known distribution of Xiruana species.