Tafana nevada De Oliveira & Brescovit 2021, sp. nov.
Creators: name: De Oliveira, Luiz Fernando M.
name: Brescovit, Antonio Domingos
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Anyphaenidae
Tafana
Tafana nevada

description: Tafana nevada sp. nov.
urn:lsid:zoobank.org:act: ABEBEE44-6E38-47E3-A0BA-7C343EB73C9B
Figs 17–18, 32L, 35
Diagnosis
Males of Tafana nevada sp. nov. resemble those of T. riveti and T. humahuaca sp. nov. by having the short embolus, but differ from the others by having the apophysis at the base of the embolus long and curved (Figs 17C–D, 18A–C). Females resemble those of T. humahuaca sp. nov. by having the epigynal plate with parallel lateral lobes, but differ by having a large atrium in the anterior region and a hyaline membrane in the posterior region (Figs 17F–G, 33L).
Etymology
The specific name is a noun in apposition taken from type locality, Sierra Nevada de Santa Marta.
Material examined
Holotype COLOMBIA • 1 ♂; Sierra Nueva Granada, Sierra Nevada de Santa Marta; [10°52′00″ N, 73°43′12″ W]; 9 Apr. 1975; J.A. Kochalka leg.; AMNH.
Paratype COLOMBIA • 1 ♀; San Pedro, Sierra Nevada de Santa Marta; [10°52′00″ N, 73°43′12″ W]; 26 Feb. 1975; J.A. Kochalka leg.; AMNH.
Other material
COLOMBIA – Magdalena Departament • 1 ♀; Santa Marta, San Pedro, Carmelo, Sierra Nevada de Santa Marta; [10°52′00″ N, 73°43′12″ W]; 26 Feb. 1975; J.A. Kochalka leg.; IBNP • 1 ♀; same collection data as for preceding; 3 Mar. 1975; J.A. Kochalka leg.; IBNP • 1 ♂; Santa Marta, SE of the Cerro, Yosagaca, Sierra Nevada de Santa Marta; [10°52′00″ N, 73°43′12″ W]; 30 Dec. 1973; J.A. Kochalka leg.; IBNP • 1 ♂; Sierra Nevada de Santa Marta, Serra Nueva Granada; [10°52′00″ N, 73°43′12″ W]; 9 Apr. 1975; J.A. Kochalka leg.; IBNP • 1 ♀; Santa Marta, San Pedro, Carmelo, Sierra Nevada de Santa Marta; [10°52′00″ N, 73°43′12″ W]; 7 Feb. 1974; J.A. Kochalka leg.; IBSP 209872 • 1 ♂; Santa Marta, Serra Nueva Granada; [10°52′00″ N, 73°43′12″ W]; 20 Feb. 1974; J.A. Kochalka leg.; IBSP 209873. – Cordillera Oriental • 2 ♀♀; Scorpa Mission, Serra del Perijá; [10°00′59″ N, 72°57′28″ W]; 10–22 Aug. 1968; B. Malkin leg.; AMNH. – Cundinamarca • 1 ♀; Sasaima, Finca Bella Vista; [4°57′54″ N, 74°26′05″ W]; 16 Mar. 1965; P.R. Craig leg.; CAS.
VENEZUELA – Aragua • 1 ♀; Rancho Grande; [10°38′30″ N, 68°00′31″ W]; 4 Mar. 1959; A.M. Nadler leg.; AMNH. – Monagas • 1 ♀; Caripe, Cueva del Guácharo; [10°10′09″ N, 63°30′36″ W]; 20–30 Jul. 1987; S. and J. Peck leg.; AMNH.
Description
Male (holotype, AMNH)
COLOR. Exemplar probably discolored. Carapace reddish brown (Fig. 17A). Labium, sternum and endites reddish brown. Chelicerae reddish. Legs I–IV yellow, darker at tarsi. Abdomen yellow with dark spots (Fig. 17A).
MEASUREMENTS. Total length 5.6, carapace length 2.6, width 2.2. Clypeus height 0.06. Eye diameters and interdistances: AME 0.1, ALE 0.12, PME 0.14, PLE 0.12; AME–AME 0.06, AME–ALE 0.02, PME– PME 0.12, PME–PLE 0.14, ALE–PLE 0.02. Chelicerae 1.1 long, with four promarginal teeth and four retromarginal denticles.
LEG MEASUREMENTS. I—femur 2.5 / patella 1.0/ tibia 2.53 / metatarsus 2.2 /tarsus 0.9 /total 9.13; II— 2.3/ 1.0/ 2.2 /2.0 / 0.8/ 8.3; III—1.8 / 0.62 / 1.9/ 1.2/ 0.6/ 6.12; IV—2.4/ 0.9 /2.0 / 2.6/ 0.62 / 8.52.
LEG SPINATION. I—tibia v1-1-0, metatarsus v2-0-0; II—tibia v0-2-0, p0-1-0; III—tibia v1-2-2, p0-1-1, r1-1-0, metatarsus v2-1-2; IV—tibia r1-1-0, metatarsus v2-1-2.
PALP. Retrolateral tibial apophysis conical and curved; cymbium with retrolateral projection; apophysis at the base of the embolus long and curved; embolus extremely short; ventral tegular process near the median apophysis; median apophysis slender and curved; subtegulum not projected; sperm duct with secondary looping reaching the apex of the tegulum (Figs 17C–D, 18A–C).
ABDOMEN. Length 3.0, epigastric furrow 0.7 from tracheal spiracle, spiracle 1.1 from base of spinnerets.
Female (paratype, AMNH)
COLOR. Exemplar probably discolored. Carapace reddish brown (Fig. 17B). Labium, sternum and endites reddish brown. Chelicerae reddish brown. Legs I–IV yellow, darker at tarsi. Abdomen yellowish gray with dark spots (Fig. 17B).
MEASUREMENTS. Total length 5.9, carapace length 2.6, width 2.0. Clypeus height 0.04. Eye diameters and interdistances: AME 0.1, ALE 0.12, PME 0.12, PLE 0.1; AME–AME 0.06, AME–ALE 0.06, PME– PME 0.14, PME–PLE 0.12, ALE–PLE 0.04. Chelicerae 1.2 long, with four promarginal teeth and five retromarginal denticles.
LEG MEASUREMENTS. I—femur 1.88 / patella 1.0/ tibia 1.2 /metatarsus 1.1 /tarsus 0.7/ total 5.88; II— 1.7/ 0.9/ 1.4 /1.2 / 0.6/ 5.8; III—1.1 / 0.6/ 0.9/ 1.1/ 0.4/ 4.1; IV—1.2/ 0.8/ 1.2/ 2.1 /0.6 / 5.9.
LEG SPINATION. I—tibia v1-1-0, metatarsus v2-0-0; II—tibia v0-0-0; III—tibia v1-2-2, r1-1-0, metatarsus v2-1-2; IV—tibia v1-2-2, r1-1-0.
EPIGYNUM. Hood semicircular and sclerotized; broad atrium; lateral lobes covering copulatory ducts; posterior region covered by cuticle. Internally, copulatory ducts short; primary spermathecae large and oval; secondary spermathecae above the primary spermathecae and rounded; long fertilization ducts in horizontal position (Figs 17F–G, 33L).
ABDOMEN. Length 3.3, epigastric furrow 0.45 from tracheal spiracle, spiracle 1.4 from base of spinnerets.
Variation
Two males: total length 4.2–4.9; carapace 1.9–1.9; femur I 1.7–1.9. Ten females: total length 4.3–6.7; carapace 1.6–2.4; femur I 1.3–1.9.
Distribution
Venezuela and Colombia (Fig. 35).
description: Published as part of De Oliveira, Luiz Fernando M. & Brescovit, Antonio Domingos, 2021, Taxonomic revision and cladistic analysis of ghost spiders of the genus Tafana Simon, 1903 (Araneae: Dionycha, Anyphaenidae), with the descriptions of twelve new species, pp. 1-77 in European Journal of Taxonomy 742 on pages 30-33, DOI: 10.5852/ejt.2021.742.1291, http://zenodo.org/record/4655404