Corinna maracas, 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 : 487-489

Corinna maracas n. sp.

Figs. 8 , 13–15 , 25 , 94–97, 104

Type material. Male holotype from Maracás [13°25'41.94"S 40°26'16.03"W], Bahia, Brazil, 22–25.VI.2009, A. Chagas Jr, A. Kury, D. Pedroso, A. Giupponi and V. Dill, deposited in MNRJ (6441). Paratypes: Brazil. Bahia: Maracás [13°25'41.94"S 40°26'16.03"W], 4 females, 22–25.VI.2009, A. Chagas Jr, A. Kury, D. Pedroso, A. Giupponi and V. Dill ( MNRJ 6441); 1 female ( MNRJ 6119).

Etymology. The specific name is a noun in apposition taken from the type locality.

Diagnosis. Males of Corinna maracas n. sp. resemble those of C. demersa n. sp. by the RTA with a ventroapical incision, absence of tegular process and presence of a well-delimited unsclerotized area in the distal retrolateral margin of conductor, but differ by the presence of a pointed retrolateral projection in the tegular apical margin and by the embolus not covered by folds of conductor (Figs. 94–95); females resemble those of C. demersa n. sp. by the triangular copulatory opening, arising between the closely placed secondary spermathecae, but differ by the copulatory ducts not visible ventrally and by the epigynal surface with a wide longitudinal median groove (Fig. 96).

Description. Male (holotype). Carapace dark red, chelicerae black, endites red with posterior end paler, labium black with posterior end paler, sternum brown, leg I with coxae, trochanter and femur brown, patella, tibia, metatarsus and tarsus dark yellow, legs II with coxae and trochanter dark yellow, femur, patella, tibia, metatarsus and tarsus yellow, legs III and IV yellow; dorsum of abdomen gray, with dorsal scutum in distal third, ventrally pale gray, with large median brown band in longitudinal axis. Total length 15.2. Carapace 6.6 long; 5.6 wide; 1.45 high. Clypeus 0.55 high. Abdomen 6.8 long; 3.6 wide. Eyes: anterior row 2.25, posterior row 2.65. MOQ: 0.87 long, 0.82 anterior wide, 0.9 posterior wide. Eyediameters and interdistances: AME 0.3; ALE 0.25; PME 0.27; PLE 0.25; AME–AME 0.27; AME–ALE 0.45; PME–PME 0.37; PME–PLE 0.7; ALE–PLE 0.17. Chelicerae 3.4 long; 5 (6) retromarginal teeth and 3 promarginal teeth. Sternum 3.6 long; 2.9 wide. Leg measurements: femur I 6.1 / patella 2.9/ tibia 6.0/ metatarsus 5.5/ tarsus 2.0/ total 22.5; II 5.6/ 2.7/ 4.9/ 5.0/ 2.0/ 20.2; III 4.3/ 1.7/ 3.8/ 4.1/ 1.7/ 15.6; IV 5.1/ 2.3/ 5.3/ 5.7/ 1.9/ 20.3. Leg formula 1243. 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 v2-1 p-2-1r-1p; metatarsus v2-2 -0. III—femur d0-1-0; tibia v0- 0-2, r0-1-1, p0-0-1; metatarsus p1-1-0, r0-1-0, v2-2 -2-1. IV—femur d0-1-0; tibia r0-1-1, v0-0-2; metatarsus p1-3- 0, r1-1-0, v2 -0-2. Palp: femur with two posterior dorsal spines; RTA with ventro-apical incision; TPC absent; E filiform, not covered by a fold of conductor; C with unsclerotized area in the distal retrolateral margin (Figs. 94–95).

Female (paratype MNRJ 6441). Coloration as in male, except leg III and IV, brown.. Total length 13.7. Carapace 5.5 long; 5.0 wide; 2.4 high. Clypeus 0.32 high. Abdomen 7.8 long; 4.1 wide. Eyes: anterior row 2.1, posterior row 2.5. MOQ: 0.8 long, 0.8 anterior wide, 0.9 posterior wide. Eye diameters and interdistances: AME 0.3; ALE 0.27; PME 0.27; PLE 0.25; AME–AME 0.25; AME–ALE 0.4; PME–PME 0.35; PME–PLE 0.6; ALE–PLE 0.15. Chelicerae 3.4 long; 5 retromarginal teeth and 3 promarginal teeth. Sternum 3.1 long; 2.55 wide. Leg measurements: femur I 5.2/ patella 2.4/ tibia 4.9/ metatarsus 4.4/ tarsus 1.7/ total 18.6; II 4.7/ 2.3/ 4.0/ 4.0/ 1.6/ 16.6; III 4.1/ 1.7/ 3.4/ 3.9/ 1.4/ 14.5; IV 5.3/ 2.0/ 4.8/ 5.6/ 1.7/ 19.4. Leg formula 4123. 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 v2-1 p-2-2; metatarsus v2-2 -0. III—femur d1-1-1, r0-1-1, p0-0-1; tibia v2 -0-2, r0-1-2, p0-1-0; metatarsus p2-1-0, r1-1-0, v2-2 -2. IV—femur d1-1- 1, r0-0-1, p0-1-1; tibia r0-1-1, v2-2 -1; metatarsus p1-1-0, r1-1-0, v2-2 -1. Epigynum: epigynal plate not projected posteriolly; CO anterior, leveled with base of SS; wide longitudinal groove from posterior border of copulatory opening to posterior end of epigynal plate; CO conspicuous; SS big, close to each other; PVP widely linked at basal third of SS enveloping partially the PS (Figs. 96–97).

Variation. Length (5 females): total 13.7–16.5; carapace 5.5–6.2; femur I 5.0–5.3.

Distribution. Known only from the type locality.

Other material examined. None.

Figures

FIGURES 1 – 8. Corinna aechmea n. sp., male carapace: (1) dorsal; (2) frontal; (3) eyes, frontal; (4) eyes, dorsal; (5) granulations on cephalic region, dorsal. Corinna ziriguidum n. sp., male, carapace: (6) frontal; (7) lateral. Corinna maracas n. sp., female, carapace: (8) lateral.

FIGURES 9 – 16. Corinna ziriguidum n. sp., male: (9) chelicerae, frontal; (10) chelicerae, lateral. Corinna aechmea n. sp., male: (11) chelicerae, fang; (12) chelicerae, teeth. Corinna maracas n. sp., female: (13) chelicerae, lateral; (14) chelicerae, ventral; (15) sternum, ventral. Corinna ziriguidum n. sp., male: (16) endites and labium, ventral.

FIGURES 25 – 32. Corinna maracas n. sp., female: (25) palpal claw. Corinna ziriguidum n. sp., male, tarsus I: (26) claws, dorsal; (27) claws, lateral. Corinna demersa n. sp., female: (28) tarsus I, claw, lateral; (29) abdomen, lateral; (30) abdominal setae, lateral. Corinna aechmea n. sp., male, abdomen (31) lateral setae; (32) feathery setae.