Corinna aechmea, 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 : 469-470

Corinna aechmea n. sp.

Figs. 1–5 , 11 ,–12, 18–23, 31–33, 50–53, 62

Type material. Male holotype from Porto Rico, 22°44'38.78''S 53°12'59.85''W, Paraná, Brazil, 18.III.2010, F. Amadeo, deposited in MPEG (20248). Paratypes: Brazil. Minas Gerais: Belo Horizonte (Estação Ecológica da UFMG) [19°52'56"S 43°58'18"W], 1 male and 1 female, 30.VI.1993, H.R. Pimenta ( UFMG); São Paulo: (Usina Hidrelétrica de Rosana), [22°35'57.72"S 52°52'29.32"W], 1 male, XII.1986 ( IBSP 4513); Paraná: Porto Rico (Planície de Inundação do Alto Rio Paraná), 22°44'38.78''S 53°12'59.85''W, 1 female, 25.II.2010, F. Amadeo ( MPEG 20249); 1 female ( MPEG 20250).

Etymology. The specific name is a noun in apposition taken from the scientific name of the bromeliad in which the holotype was collected, Aechmea distichantha Lem.

Diagnosis. Males of Corinna aechmea n. sp. resemble those of C. jecatatu n.sp. and C. zecarioca n. sp. by presenting the RTA bifurcated, with a large median process in the prolateral suface, but it is readily recognized by the rounded apical tegular projection ( Figs. 50–51 ); females differ from those of other species with secondary spermathecae separated by less than one diameter and copulatory opening median by the posterior margin of copulatory opening U-shaped and the posterior vulval plate with lateral rounded protuberances on the internal margin ( Figs. 52–53 ).

Description. Male (holotype). Carapace black with posterior end of thoracic region dark red, chelicerae black, endites red, posterior end paler; labium black, posterior end paler; sternum brown, legs with coxae, trochanters and femora dark brown, patellae, tibiae, metatarsi and tarsi dark yellow; dorsum of abdomen light gray, dorsal scutum with distal portion large tapering to the median region; abdomen ventrally light gray with large median brown band in longitudinal axis. Total length: 11.1. Carapace 5.0 long; 4.2 wide; 2.7 high. Clypeus 0.4 high. Abdomen 5.4 long; 3.3 wide. Eyes: anterior row 1.9, posterior row 2.2. MOQ: 0.68 long, 0.76 anterior wide, 0.73 posterior wide. Eyes diameters and interdistances: AME 0.27; ALE 0.21; PME 0.21; PLE 0.2; AME–AME 0.26; AME–ALE 0.37; PME–PME 0.33; PME–PLE 0.58; ALE–PLE 0.14. Chelicerae 3.0 long; 4 retromarginal teeth and 3 promarginal teeth. Sternum 2.6 long; 2.15 wide. Leg measurements: femur I 4.25/ patella 2.1/ tibia 3.6/ metatarsus 3.15/ tarsus 1.75/ total 14.85; II 3.65/ 1.9/ 3.05/ 2.95/ 1.6/ 13.15; III 3.2/ 1.6/ 2.25/ 2.75/ 1.2/ 11; IV 4.05/ 1.7/ 3.5/ 3.7/ 1.3/ 14.25. Leg formula 1423. Leg spination: I—femur d1-1-0, p0-0-1; tibia v2-2 -2-2; metatarsus v2-2 -0. II—femur d1- 1-0, p0-0-1; tibia vr-1-1-1; metatarsus v2-2 -0. III—femur d1-1-1, p0-1-2, r0-0-1; tibia v2-2 -0, r0-1-1; metatarsus p0-1-0, r0-1-0, v2-2 -1. IV—femur d1-1-0, r0-0-1; tibia r0-1-1, vp1-2-0; metatarsus r0-1-0, v2-1 p-1. Palp: femur with two posterior dorsal spines; TPC inserted far from base of embolus; E filiform, partly covered by the apical groove of conductor; C with large unsclerotized area in the distal region ( Figs 50, 51 ).

Female (paratype MPEG 20249). Coloration as in male, except dorsum of abdomen gray, without dorsal scutum. Total length: 11.3. Carapace 4.7 long; 3.8 wide; 2.4 high. Clypeus 0.38 high. Abdomen 6.5 long; 4.1 wide. Eyes: anterior row 1.77, posterior row 2.05. OQ: 0.62 long, 0.71 anterior wide, 0.68 posterior wide. Eyes diameters and interdistances: AME 0.23; ALE 0.2; PME 0.18; PLE 0.18; AME–AME 0.28; AME–ALE 0.37; PME–PME 0.35; PME–PLE 0.44; ALE–PLE 0.14. Chelicerae 2.5 long. Sternum 2.3 long; 2.05 wide. Leg measurements: femur I 3.8/ patella 1.85/ tibia 3.25/ metatarsus 2.65/ tarsus 1.6/ total 13.15; II 3.45/ 1.7/ 2.8/ 2.55/ 1.45/ 11.95; III 2.85/ 1.4/ 2.2/ 2.4/ 1.1/ 9.95; IV 3.65/ 1.5/ 3.2/ 3.25/ 1.15/ 12.75. Leg formula 1423. Leg spination: I—femur d1-1- 0, p0-0-1; tibia v2-2 -2-2; metatarsus v2-2 -0. II—femur d1-1-0, p0-0-1; tibia vr-1-1-1; metatarsus v2-3 -0. III—femur d1-1-1, p0-1-1, r0-1-0; tibia v2-2 -0, r0-1-1; metatarsus p0-1-0, r0-1-0, v2-2 -1. IV—femur d1-1-1, r0-0- 1; tibia r0-1-1, vp1-r1-p1; metatarsus r0-1-0, v2-2 -1. Epigynum: epigynal plate not projected posteriolly; CO median, small and inconspicuous; CD not visible ventrally ( Figs. 52–53 ).

Variation. Length (8 males): total 7.4–11.1; carapace 3.8–5.1; femur I 2.7–3.8; (6 females) total 8.0–12.2; carapace 3.8–5.1; femur I 3.2–4.1.

Distribution. Minas Gerais and Paraná, Brazil.

Other material examined. Brazil. Minas Gerais: Uberlândia [18°54'40.64"S 48°15'43.83"W] ( Mata do Glória), 1 male, 24.VI.1993, P.C. Motta ( UNB 464); Santa Bárbara ( RPPN, Estação de Preservação e Desenvolvimento Ambiental de Peti), 19°53'S 43°22'W, 3 males and 1 female, 05–06.VI.2010, A.J. Santos ( UFMG 4460); 1 female, 07.IV.2004, E.T. Rodrigues; Belo Horizonte (Parque Municipal das Mangabeiras), 19°57'14.86"S 43°54'19.15"W, 1 male, 5–12.XII.2008, H.H. Santos et al. ( UFMG 8508). Paraná: Porto Rico (Planície de Inundação do Alto Rio Paraná), 22°44'38.78''S 53°12'59.85''W, 1 female, 15.IV.2010, F. Amadeo ( MPEG 20251); Vila Alta [currently Alto Paraíso] ( Ilha Grande), [23°45'0.00"S 54°2'60.00"W], 2 males, 08.XII.1995, M.L. Fischer ( MPEG); Altônia ( Ilha do Cristo), [23°52'21.25"S 53°53'48.30"W], 1 female, 08.X.1989, R.Pinto da Rocha ( MHCI).

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 50 – 57. Corinna aechmea n. sp., male: (50) palp, ventral; (51) same, retrolateral; female: (52) epigynum, ventral; (53) same, dorsal. Corinna jecatatu n. sp., male: (54) palp, ventral; (55) same, retrolateral; female: (56) epigynum, ventral; (57) same, dorsal. Scale bar = 0.5 mm. Abbreviations: FD—Fertilization ducts; ppRTA—Prolateral process of Retrolateral tibial apophysis; PS—Primary spermathecae; PVP—Posterior vulvar plate; SS—Secondary spermathecae; Tpr—Tegular projection.