Corinna vesperata, Rodrigues, Bruno V. B. & Bonaldo, Alexandre B., 2014

Rodrigues, Bruno V. B. & Bonaldo, Alexandre B., 2014, Taxonomic revision of the species group rubripes of Corinna Koch, 1842 (Araneae; Corinnidae), Zootaxa 3815 (4), pp. 451-493 : 478-480

Corinna vesperata n. sp.

Figs. 38 , 74–77 , 82

Type material. Male holotype from Minas da Serrinha, Diamantina [18°14'17.05"S 43°36'39.64"W], Minas Gerais, Brazil, XII.1944, E. Cohn, deposited in AMNH. Paratypes: Brazil. Minas Gerais: Diamantina [18°14'17.05"S 43°36'39.64"W], (Minas da Serrinha), 1 female, XII.1944, E. Cohn ( AMNH); 1 male, I–III.1945 ( AMNH).

Etymology. The specific name is a noun in apposition referring to a cultural event called “ vesperata ”, that occurs twice a month from March to October in Diamantina, the type locality. In a typical vesperata presentation, the musicians perform from the balconies and windows of historic buildings and are conducted by a maestro in the middle of the street.

Diagnosis. Males of Corinna vesperata n. sp. resemble those of C. hyalina n. sp. by the retrolaterally enlarged RTA but differ by the wider than long RTA in retrolateral view ( Figs. 74–75 ); females are readily distinguished by the posteriorly placed copulatory opening, inserted in an epigynal excavation ( Figs. 76–77 ).

Description. Male (holotype). Carapace dark reddish brown, chelicerae black, endites and labium dark red with posterior end paler, sternum brown, leg I with coxae, trochanter, femur, metatarsus and tarsus dark brown, patella and tibia dark yellow, legs II, III and IV dark yellow; dorsum of abdomen gray, with dorsal scutum extending to the median region of abdomen, ventrally pale gray. Total length: 11.7. Carapace 6.2 long; 5.0 wide; 3.3 high. Clypeus 0.6 high. Abdomen 5.6 long; 3.9 wide. Eyes: anterior row 2.1, posterior row 2.5. MOQ: 0.82 long, 0.87 anterior wide, 0.85 posterior wide. Eye diameters and interdistances: AME 0.28; ALE 0.22; PME 0.25; PLE 0.21; AME–AME 0.35; AME–ALE 0.41; PME–PME 0.42; PME–PLE 0.72; ALE–PLE 0.15. Chelicerae 3.4 long; 4 retromarginal teeth and 3 promarginal teeth. Sternum 3.1 long; 2.7 wide. Leg measurements: femur I 5.3/ patella 2.3/ tibia 5.1/ metatarsus 4.0/ tarsus 2.2/ total 18.9; II 4.9/ 2.4/ 4.3/ 3.6/ 2.1/ 17.3; III 4.1/ 2.0/ 3.2/ 3.5/ 1.8/ 14.6; IV 5.5/ 2.2/ 4.9/ 5.2/ 2.0/ 19.8. Leg formula 4123. Leg spination: I—femur d1-1-0, p0-0-2; tibia v2-2 -2; metatarsus v2-2 -0. II—femur d1-1-1, p0-0-2; tibia v1-1 -2; metatarsus v2-2 -0. III—femur d1-1-1, p0-1-1, r0-1-1; tibia vp1-0-1, vr0-1-0, p0-1-0, r0-1-1; metatarsus v2-2 -1, p0-1-0, r1-1-0. IV—femur d1-1-1, r0-0-1, p0-0-1; tibia v2-2 -0, r1-0-1; metatarsus v2-2 -1, p1-0-0, r1-1-0. Palp: femur with two posterior dorsal spines; Tpr retroapical curved slightly prolateraly; TPC placed far from base of embolus; E filiform partially covered by distal fold of conductor; C with small distal unsclerotized area ( Figs. 74–75 ).

Female (paratype AMNH). Coloration as in male. Total length: 12.7. Carapace 6.4 long; 5.1 wide; 3.25 high. Clypeus 0.5 high. Abdomen 5.9 long; 4.3 wide. Eyes: anterior row 2.3, posterior row 2.6. MOQ: 0.9 long, 1.0 anterior wide, 0.95 posterior wide. Eye diameters and interdistances: AME 0.34; ALE 0.25; PME 0.25; PLE 0.23; AME–AME 0.37; AME–ALE 0.46; PME–PME 0.45; PME–PLE 0.8; ALE–PLE 0.17. Chelicerae 3.6 long. Sternum 3.2 long; 2.6 wide. Leg measurements: femur I 4.8/ patella 2.5/ tibia 4.7/ metatarsus 3.9/ tarsus 2.2/ total 18.1; II 4.8/ 2.3/ 4.1/ 3.6/ 2.1/ 16.9; III 4.2/ 2.0/ 3.0/ 3.2/ 1.6/ 14.0; IV 4.3/ 2.2/ 4.5/ 4.2/ 2.0/ 17.2. Leg formula 1423. Leg spination: I—femur d1-1-0, p0-0-1; tibia v2-1 p-2-2; metatarsus v2-2 -0. II—femur d1-1-0, p0-0-1; tibia v1-1 -2; metatarsus v2-2 -0. III—femur d1-1-1, r0-1-0, p0-1-1; tibia v2-2 -0, r1-0-1, p0-1-0; metatarsus p1-1-0, r0-1- 0, v2-2 -0. IV—femur d1-1-0, r0-0-1; tibia r1-0-1, v2-1 r-1p; metatarsus p1-1-0, r0-1-0, v1 r-2-1. Epigynum: epigynal plate not projected posteriolly; CO inserted in an excavation, posterior border V-shaped; CO conspicuous; CD not visible ventrally; SS placed very far from each other; small, nearly same sized as PS ( Figs. 76–77 ).

Variation. Length (2 males): total 11.7–12.1, carapace 6.2–6.3, femur I 5.3–5.6.

Distribution. Known only from the type locality. Other material examined. None.

Figures

FIGURE 82. Known distribution of Corinna vesperata n. sp., C. hyalina n. sp. and C. tranquilla n. sp. in Southeastern Brazil.

FIGURES 37 – 40. Lateral view of carapace of some Corinna species, males, carapace and chelicerae, lateral view: (37) Corinna balacobaco n. sp.; (38) Corinna vesperata n. sp.; (39) Corinna demersa n. sp.; (40) Corinna caatinga n. sp.

FIGURES 74 – 81. Corinna vesperata n. sp., male: (74) palp, ventral; (75) same, retrolateral; female: (76) epigynum, ventral; (77) same, dorsal. Corinna hyalina n. sp., male: (78) palp, ventral; (79) same, retrolateral. Corinna tranquilla n. sp., female: (80) epigynum, ventral; (81) same, dorsal. Scale bar = 0.5 mm.