Patrera virgata ( Keyserling, 1891 )

Oliveira, Luiz Fernando M. & Brescovit, Antonio D., 2021, The spider genus Patrera Simon (Araneae: Dionycha, Anyphaeninae) in the Atlantic Forest biome, with the description of one new species from Brazil, Zootaxa 4991 (2), pp. 201-246 : 215-217

Patrera virgata ( Keyserling, 1891)

Figs 7A–D ; 27F

Anyphaena virgata Keyserling, 1891: 92 , fig 54 (Syntypes two males and four females from Fazenda Calvário, Serra Vermelha, Itaocara (21°40’44”S; 42°4’55”W), Rio de Janeiro, Brazil, Prof. Göldi leg., deposited in BMNH 1890.7.1.595-600, examined). Lectotype male in BMNH 1890.7.1.595 and paralectotypes one male and four females in BMNH 1890.7.1.626–630, here designated).

Teudis virgatus: Petrunkevitch, 1911: 519 .

Patrera virgata: Brescovit, 1997: 33 .

Other material examined. None.

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 17C, D , 18A, B ), and having large hood and broad atrium in the female epigynum (as in Figs 17F , 18C ). 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 7A, 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 7C, D ).

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 v2-2-0, p1-1-1, r1-1-1, metatarsus v2-1-0, p1-1-1, r1-1-1; III—tibia v2-2-0, p1-1-0, r1-1-0, metatarsus v2-2-2, p1-1-1, r1-1-1; IV—tibia v2-2-1, p1-1-0, r1-1-0, metatarsus v2-2-2, p1-1-1, r1-1-1. 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 7A, 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 v2-2-0, p0, r0, metatarsus v2-0-0, p0, r0; II—tibia v2-2-0, p1-1-1, r0, metatarsus v2-0-0, p0, r0; III—tibia v2-1-0, p1-1-1, r1-1-1, metatarsus v2-2-2, p1-1-0, r1-1-0; IV—tibia v2-2-2, p1- 1-0, r1-1-0, metatarsus v2-2-2, p1-1-1, r1-1-1. 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 7C, D ).

Distribution. Known only to the type locality, in the state of Rio de Janeiro, Brazil ( Fig. 27F ).

Figures

FIGURE 7A–D. Patrera virgata (Keyserling, 1891): Male (BMNH 1890.7.1.595): A left palp, ventral view; B same, retrolateral view. Female (BMNH 1890.7.1.626): C epigynum, ventral view; D epigynum, dorsal view. Abbreviations: A, atrium; CD, copulatory ducts; E, embolus; FD, fertilization ducts; H, hood; MA, median apophysis; RTA, retrolateral tibial apophysis; S, spermathecae; SR, seminal receptacles; T, tegulum. Scale bars: A–D 0.25mm.

FIGURE 17A–G. Patrera concolor (Keyserling, 1891). Male (IBSP 212646):A habitus, dorsal view; C left palp, ventral view; D same, retrolateral view; E same, dorsal view. Female (IBSP 212646): B habitus, dorsal view; F epigynum; ventral view; G epigynum, dorsal view. Abbreviations: A, atrium; CD, copulatory ducts; FD, fertilization ducts; H, hood; LB, lateral borders; MA, median apophysis; RTA, retrolateral tibial apophysis; S, spermathecae; SR, seminal receptacles; T, tegulum. Scale bars: A, B 3.5mm; C 0.5mm; D 0.73mm; E 0.66mm; F, G 0.25mm.

FIGURE 18A–D. Patrera concolor (Keyserling, 1891). Male (IBSP 212646): A left palp, ventral view; B same, retrolateral view. Female (IBSP 212646): C epigynum, ventral view; D epigynum, dorsal view. Abbreviations: A, atrium; CD, copulatory ducts; CO, copulatory opening; E, embolus, FD, fertilization ducts; H, hood; LB, lateral borders; MA, median apophysis; RTA, retrolateral tibial apophysis; S, spermathecae; SR, seminal receptacles; T, tegulum. Scale bars: A–D 0.25mm.

FIGURE 27A–F. Distribution map of Patrera species.