Xiruana aymara, 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: 216

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-FFF4-FFBC-FF23-FC87FCF8F834

treatment provided by

Plazi

scientific name

Xiruana aymara
status

new species

Xiruana aymara  new species

Figs 9View FIGURE 9 A –H; 15 B

Type material. Male holotype from Cerro Uchumachi, 7 km Coroico 1900m (16 ° 15 ’00”S; 67 ° 21 ’00”W), La Paz, Bolivia, 24–25.XI. 1989, Coddington, Griswold, Larcher, Peñaranda, Silva leg., deposited in USNM; female paratype from Puente Mururata, Coroico 1200m (16 ° 30 ’00”S; 67 ° 49 ’ 60 ”W), La Paz, Bolivia, 24–26.XI. 1894, L. E. Peña leg., deposited in AMNH.

Etymology. The specific name, a noun in apposition, is a tribute to the Andean people Aymara  , who lived in the region of Coroico.

Diagnosis. Males of Xiruana aymara  n. sp. are easily distinguished from other male forms in the genus by the palp with the posterior region of the median tibial apophysis long and curved at the apex, and by the entire retrolateral tibial apophysis, without posterior branch ( Figs 9View FIGURE 9 D –F). Females resemble those of X. affinis  by the posterior border of the epigynum twice as wide as the anterior border, but differ by the inconspicuous atrium and by the copulatory ducts curved anteriorly ( Figs 9View FIGURE 9 G, H).

Description. Male (Holotype). Coloration as in X. hirsuta  . Total length 4.0, carapace length 1.9, width 1.5. Clypeus height 0.04. Eye diameters and interdistances: AME 0.1, ALE 0.1, PME 0.08, PLE 0.08; AME –AME 0.04, AME –ALE 0.02, PME –PME 0.1, PME –PLE 0.1, ALE –PLE 0.04. Chelicerae 0.6 long, with four promarginal teeth and five retromarginal denticles. Leg measurements: Leg I—femur 1.9 / patella 0.7 / tibia 1.9 / metatarsus 1.6 / tarsus 0.9 / total 7.0; II— 1.6 / 0.6 / 1.4 / 1.3 / 0.6 / 5.5; III— 1.2 / 0.6 / 0.9 / 1.1 / 0.4 / 4.2; IV— 1.9 / 0.6 / 1.6 / 2.0/ 0.5 / 6.6. Leg spination: I—tibia p 1 - 1 -0, r 0-1 -0; II—tibia p 1 - 1 -0, r 0-1 -0, metatarsus v 2 - 1 -0, p0; IV—tibia p 1 - 1 - 1, r 1 - 1 - 1. Palp: anterior retrolateral tibial apophysis conical; ventral tegular process large; median apophysis curved at tip with rounded apex ( Figs 9View FIGURE 9 A –F). Abdomen: length 2.0, epigastric furrow 0.4 from tracheal spiracle, spiracle 1.1 from base of spinnerets.

Female (Paratype). Coloration as in male. Total length 6.3, carapace length 2.3, width 1.6. Clypeus height 0.06. Eye diameters and interdistances: AME 0.08, ALE 0.08, PME 0.08, PLE 0.08; AME –AME 0.04, AME –ALE 0.02, PME –PME 0.12, PME –PLE 0.08, ALE –PLE 0.02. Chelicerae 0.9 long, with four promarginal teeth and five retromarginal denticles. Leg measurements: Leg I—femur 1.5 / patella 0.7 / tibia 1.4 / metatarsus 1.1 / tarsus 0.7 / total 5.4; II—1.0/ 0.5 / 1.0/ 0.8 / 0.5 / 3.8; III— 1.3 / 0.5 / 0.8 / 0.9 / 0.4 / 3.9; IV— 1.9 / 0.7 / 1.5 / 1.8 / 0.6 / 6.5. Leg spination: I—tibia v 2 - 2 -0, p0, r0, metatarsus v 2 -0-0, p0, r0; II—tibia v 1-2 -0, p0, r0, metatarsus v 2 -0-0, p0, r0; III—tibia v 1 - 1 -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 3.9, epigastric furrow 0.8 from tracheal spiracle, spiracle 2.1 from base of spinnerets. Epigynum: seminal receptacles inserted distally on the copulatory ducts, fertilization ducts longer than spermathecae width ( Figs 9View FIGURE 9 G, H).

Other material examined. Only the types.

Distribution. Known only from La Paz, Bolivia ( Fig. 15View FIGURE 15 B).

USNM

Smithsonian Institution, National Museum of Natural History

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Anyphaenidae

Genus

Xiruana