Corinna tranquilla, 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 : 480-481

Corinna tranquilla n. sp.

Figs. 80–82

Type material. Female holotype from RPPN Estação Biológica da Mata do Sossego, 20°04'25.5"S 42°04'13"W, Simonésia, Minas Gerais, Brazil, 28–30.XI.2010, M. T. T. Santos, deposited in UFMG (4741).

Etymology. The specific name is a Latin adjective meaning quiet and was taken from the type locality name ( Mata do Sossego), Portuguese for Forest of Tranquility.

Diagnosis. Females of Corinna tranquilla n. sp. are similar to those of C. zecarioca n. sp., by secondary spermathecae separated from each other by more than its diameter, but are readily recognized by these spermathecae being ovoid instead of globular ( Figs. 80–81 ).

Description. Female (holotype). Carapace and chelicerae black, endites dark red and labium black with posterior end paler, sternum dark red, legs I and II dark red, legs III and IV dark yellow; dorsum of abdomen dark gray, ventrer gray. Total length: 11.6. Carapace 5.0 long; 3.9 wide; 2.7 high. Clypeus 0.55 high. Abdomen 6.3 long; 4.2 wide. Eyes: anterior row 2.05, posterior row 2.3. MOQ: 0.8 long, 0.85 anterior wide, 0.8 posterior wide. Eye diameters and interdistances: AME 0.33; ALE 0.25; PME 0.25; PLE 0.25; AME–AME 0.25; AME–ALE 0.38; PME–PME 0.3; PME–PLE 0.63; ALE–PLE 0.18. Chelicerae 2.75 long; 4 retromarginal teeth and 3 promarginal teeth. Sternum 2.4 long; 2.1 wide. Leg measurements: femur I 4.1/ patella 1.8/ tibia 3.55/ metatarsus 2.95/ tarsus 1.7/ total 14.1; II 3.65/ 1.7/ 3.0/ 2.7/ 1.5/ 12.55; III 2.95/ 1.45/ 2.1/ 2.5/ 1.1/ 10.1; IV 4.05/ 1.7/ 3.5/ 3.75/ 1.2/ 14.2. Leg formula 4123. Leg spination: I—femur d1-0-0, p0-0-1; tibia v2-2 -2-2; metatarsus v2-2 -0. II—femur d1-1-0, p0-0-1; tibia vr1-1-1; metatarsus v2-2 -0. III—femur d1-1-1; tibia v2-2 -0, p1-0-0, r0-1-1; metatarsus p1-0-0, r0-1-0, v2-2 -1. IV—femur d1-1-1, r0-0-1; tibia r0-1-1, v1 p-2-0; metatarsus r0-1-0, v2-2 -1. Epigynum: epigynal plate not projected posteriolly; CO median, inconspicuous; CD not visible ventrally ( Figs. 80–81 ).

Male: Unknown.

Distribution. Known only from the type locality.

Other material examined. None.

Figures

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.

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