Xiruana tribarrense, 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: 225

publication ID

http://dx.doi.org/10.11646/zootaxa.3980.2.3

publication LSID

lsid:zoobank.org:pub:13D14535-2FCD-4E8D-A8EC-01CC9D6F38CC

persistent identifier

http://treatment.plazi.org/id/03839756-FFE3-FFAB-FF23-FD64FCF1F9E8

treatment provided by

Plazi

scientific name

Xiruana tribarrense
status

new species

Xiruana tribarrense  new species

Figs 14View FIGURE 14 A –B; 16 B

Type material. Female holotype from Foz do Córrego Três Barras, Rio Guarani, Três Barras do Paraná (25 ° 25 ’08”S; 53 ° 10 ’ 51 ”W), Paraná, Brazil, 20–26.II. 1993, A. B. Bonaldo leg., deposited in MCN 22942View Materials.

Etymology. The specific name, from Brazilian Portuguese, is a gentilic adjective designating those born in the municipality of Três Barras do Paraná.

Diagnosis. Females of Xiruana tribarrense  n. sp. differ from those of all other species in the genus by the epigynal plate with the posterior border narrowed and extremely broad ( Fig. 14View FIGURE 14 A).

Description. Female ( MCN 22942View Materials). Coloration as in X. hirsuta  . Total length 5.59, carapace length 2.5, width 2.0. Clypeus height 0.06. Eye diameters and interdistances: AME 0.1, ALE 0.10, PME 0.12, PLE 0.12; AME – AME 0.06, AME –ALE 0.02, PME –PME 0.14, PME –PLE 0.08, ALE –PLE 0.04. Chelicerae 1.2 long, with four promarginal teeth and five retromarginal denticles. Leg measurements: Leg I—femur 2.1 / patella 1.0/ tibia 2.1 / metatarsus 1.8 / tarsus 0.9 / total 7.9; II—2.0/ 0.9 / 1.9 / 1.5 / 0.8 / 7.1; III— 1.7 / 0.7 / 1.2 / 1.5 / 0.5 / 5.6; IV— 2.5 / 0.8 / 1.9 / 2.6 / 0.6 / 8.4. Leg spination: I—tibia v 2 - 2 -0, p0, r0, metatarsus v 2 -0-0, p0, r0; II—tibia v 1-2 -0, p 0-1 -0, r0, metatarsus v 2 -0-0, p0, r0; III—tibia v 1-2 - 2, p 0-1 - 1, r 0-1 - 1; IV—tibia v 1-2 - 2, p 1 - 1 - 1, r 1 - 1 - 1. Abdomen: length 3.1, epigastric furrow 1.0 from tracheal spiracle, spiracle 1.5 from base of spinnerets. Epigynum: copulatory ducts long and curved anteriorly; seminal receptacles clearly separated from the globose spermathecae; fertilization ducts longer than spermathecae width ( Figs 14View FIGURE 14 A, B).

Male. Unknown.

Other material examined. Only the holotype.

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

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Anyphaenidae

Genus

Xiruana