Patrera virgata (Keyserling 1891)
- Dataset
- The spider genus Patrera Simon (Araneae: Dionycha, Anyphaeninae) in the Atlantic Forest biome, with the description of one new species from Brazil
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Arachnida
- order
- Araneae
- family
- Anyphaenidae
- genus
- Patrera
- species
- Patrera virgata
description
Description. Male (Lectotype). Carapace reddish yellow with orange paramedian bands. Chelicerae, labium and endites reddish brown. Sternum and legs yellow. Abdomen yellow graying dorsally, with two blackish paramedian bands, ventrally light gray with cream spinnerets. Total length 4.8, carapace length 2.2, width 1.7. Clypeus height 0.08. Eye diameters and interdistances: AME 0.07, ALE 0.14, PME 0.14, PLE 0.15; AME – AME 0.06, AME – ALE 0.05, PME – PME 0.12, PME – PLE 0.12, ALE – PLE 0.06. Chelicerae 1.45 long, five promarginal teeth, six retromarginal denticles. Leg measurements: leg I — femur 3.0 / patella 1.0 / tibia 3.55 / metatarsus 3.15 / tarsus 1.3 / total 12.0; II — 2.6 / 0.9 / 3.0 / 2.7 / 1.15 / 10.15; III — 1.7 / 0.7 / 1.4 / 1.9 / 0.6 / 6.3; IV — 2.5 / 0.75 / 2.4 / 3.1 / 0.65 / 9.4. Leg spination: I — II — tíbia v 2 - 2 - 0, p 1 - 1 - 1, r 1 - 1 - 1, metatarsus v 2 - 1 - 0, p 1 - 1 - 1, r 1 - 1 - 1; III — tibia v 2 - 2 - 0, p 1 - 1 - 0, r 1 - 1 - 0, metatarsus v 2 - 2 - 2, p 1 - 1 - 1, r 1 - 1 - 1; IV — tibia v 2 - 2 - 1, p 1 - 1 - 0, r 1 - 1 - 0, metatarsus v 2 - 2 - 2, p 1 - 1 - 1, r 1 - 1 - 1. Abdomen: length 2.70, epigastric furrow 1.3 from tracheal spiracle, spiracle 1.4 from base of spinnerets. Palp: tibia straight, slightly longer than the cymbium; cymbium oval; tegulum oval; tegular projection short, almost completely covered by the tegulum; elongated, subapical median apophysis; slender embolus, originating at the base of the tegulum (Figs 7 A, B). Female (BMNH 1890.7.1.597). Colorations as in male, except abdomen lighter. Total length 5.4, carapace length 2.3, width 1.8. Clypeus height 0.06. Eye diameters and interdistances: AME 0.08, ALE 0.15, PME 0.14, PLE 0.15; AME – AME 0.05, AME – ALE 0.05, PME – PME 0.12, PME – PLE 0.12, ALE – PLE 0.06. Chelicerae 1.05 long, five promarginal teeth, six retromarginal denticles. Leg measurements: leg I — femur 2.3 / patella 0.9 / tibia 2.4 / metatarsus 2.0 / tarsus 1.0 / total 8.6; II — 2.1 / 0.8 / 2.05 / 1.7 / 0.8 / 7.45; III — 1.5 / 0.7 / 1.1 / 1.55 / 0.5 / 5.35; IV — 2.2 / 0.8 / 1.8 / 2.4 / 0.7 / 7.9. Leg spination: I — tibia v 2 - 2 - 0, p 0, r 0, metatarsus v 2 - 0 - 0, p 0, r 0; II — tibia v 2 - 2 - 0, p 1 - 1 - 1, r 0, metatarsus v 2 - 0 - 0, p 0, r 0; III — tibia v 2 - 1 - 0, p 1 - 1 - 1, r 1 - 1 - 1, metatarsus v 2 - 2 - 2, p 1 - 1 - 0, r 1 - 1 - 0; IV — tibia v 2 - 2 - 2, p 1 - 1 - 0, r 1 - 1 - 0, metatarsus v 2 - 2 - 2, p 1 - 1 - 1, r 1 - 1 - 1. Abdomen: length 3.0, epigastric furrow 0.9 from tracheal spiracle, spiracle 1.0 from base of spinnerets. Epigynum: lateral borders connected distally; large and deep atrium; internally with elongated, coiled copulatory ducts; elongated and globose seminal receptacles, in the proximal area of the copulatory ducts; globose spermathecae; fertilization ducts shorter than spermathecae, curved and basal (Figs 7 C, D).
description
Figs 7 A – D; 27 F
diagnosis
Diagnosis. Patrera virgata resembles P. concolor by the male having conspicuous retrolateral tibial apophysis and flattened median apophysis in the male palp (as in Figs 17 C, D, 18 A, B), and having large hood and broad atrium in the female epigynum (as in Figs 17 F, 18 C). They differ by the inverted U-shaped sperm duct in the tegulum and by the retrolateral tibial apophysis enlarged at tip and presenting two laminar, triangular projections (Figs 7 A, B) in the male palp. Females differ by the epigynum with semicircular hood and part of the copulatory ducts ventrally arched, shown by transparency (Figs 7 C, D).
distribution
Distribution. Known only to the type locality, in the state of Rio de Janeiro, Brazil (Fig. 27 F).
materials_examined
Other material examined. None.