Corinna demersa, 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 : 484-485

Corinna demersa n. sp.

Figs. 17 , 28–30 , 39 , 90 –93, 98– 104

Type material. Male holotype from Ilha do Cardoso [ 25 ° 7 '54.00"S 47 ° 57 '59.00"W], Cananéia, São Paulo, Brazil, II. 2008, G.C. O. Piccoli & G.Q. Romero, deposited in MPEG ( 20254). Paratypes: Brazil. Bahia: Maracás [ 13 ° 25 ' 41.94 "S 40 ° 26 ' 16.03 "W] (Fazenda do Mato), 1 female, 16.II. 1967, U. Caramachi et al. ( MNRJ 06435); Espírito Santo: Guarapari (Restinga de Setiba), 20 ° 36 '0"S 40 ° 25 '0"W, 1 male and 2 females, 28 –04.IX–X. 2009, T.

Gonçalves Souza ( UFMG 7188); Rio de Janeiro: Cabo Frio [ 22 ° 52 ' 43.26 "S 42 ° 1 ' 11.55 "W] (Figueira), 1 male, 2.I. 2003, ( MNRJ 06436); São Paulo: São Paulo (Ilhabela, Ilha do Búzios) [ 23 ° 48 ' 21.84 "S 45 ° 8 ' 41.18 "W], 1 male and 1 female, X. 1963, exped. DZ ( MZUSP 12620); Cananéia ( Ilha do Cardoso) [ 25 ° 7 '54.00"S 47 ° 57 '59.00"W], 1 females, II. 2008, G.C. O. Piccoli & G.Q. Romero ( MPEG 20255); 4 females ( MPEG 20256); Rio Grande do Sul: Torres [ 29 ° 20 ' 20.81 "S 49 ° 43 ' 37.32 "W], 1 female, 09.X. 1972, G. Carvalho (MCN 748).

Etymology. The specific name is a Latin adjective meaning submerged and refers to the microhabitat in which the holotype was collected, immersed in the water reservoir of a bromeliad.

Diagnosis. Males of Corinna demersa n. sp. resemble those of C. maracas 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 RTA’s ventro-apical incision deeper and by the thin, long embolus, partially covered by distal fold of conductor (Figs. 90 –91, 99, 101 – 102); females resemble those of C. maracas n. sp. by the triangular copulatory opening, arising between the closely placed secondary spermathecae, but differ by the long, inverted T-shaped copulatory ducts visible ventrally and by the epigynal surface not grooved (Figs. 92–93, 103).

Description. Male ( holotype). Carapace and chelicerae black, endites and labium black with posterior end paler, sternum dark red, leg with coxae, trochanter and femur dark brown, patella, tibia, metatarsus and tarsus dark yellow; dorsum of abdomen dark gray with scutum dorsal in distal third, ventrally brown, with large median gray band in longitudinal axis. Total length 11.1. Carapace 5.4 long; 5.1 wide; 2.2 high. Clypeus 0.4 high. Abdomen 5.6 long; 3.6 wide. Eyes: anterior row 2.0, posterior row 2.4. MOQ: 0.77 long, 0.92 anterior wide, 0.9 posterior wide. Eye diameters and interdistances: AME 0.3; ALE 0.22; PME 0.26; PLE 0.24; AME–AME 0.24; AME–ALE 0.38; PME–PME 0.34; PME–PLE 0.56; ALE–PLE 0.18. Chelicerae 3.0 long; 5 retromarginal teeth and 3 promarginal teeth. Sternum 2.9 long; 2.5 wide. Leg measurements: femur I 5.1 / patella 2.4 / tibia 5.1 / metatarsus 4.1 / tarsus 1.8 / total 18.5; II 4.6 / 2.3 / 4.1 / 3.9 / 1.5 / 16.4; III 4.0/ 1.9 / 3.4 / 3.7 / 1.5 / 14.5; IV 5.2 / 2.0/ 4.9 / 5.5 / 1.8 / 19.4. Leg formula 4123. Leg spination: I—femur d 1 - 1 -0, p0- 0-1; tibia v 2 - 1 p- 2 - 2; metatarsus v 2 - 2 -0. II—femur d 1 - 1 -0, p0- 0-1; tibia v 2 - 1 p- 2 - 2 -0; metatarsus v 2 - 2 -0. III—femur d 1 - 1 - 1, p 0-1 - 2, r 0-1 -0; tibia v 2 - 2 -0, r 0-1 - 1, p 0-1 -0; metatarsus p 0-1 -0, r 1 - 1 -0, v 2 - 2 - 1. IV—femur d 1 - 1 - 1, r0- 0-1, p0- 0-1; tibia r 0-1 - 1, v 2 - 2 -0; metatarsus p 0-1 -0, r 1 - 1 -0, v 2 - 2 - 1. Palp: femur with two posterior dorsal spines; T without projection; TPC absent; E thin and long, partially covered by conductor (Figs. 90 –91, 99, 101 – 102).

Female ( paratype MPEG 20255). Coloration as in male. Total length 16.0. Carapace 6.3 long; 5.8 wide; 3.3 high. Clypeus 0.4 high. Abdomen 9.3 long; 5.9 wide. Eyes: anterior row 2.45, posterior row 2.8. MOQ: 0.88 long, 0.92 anterior wide, 0.94 posterior wide. Eye diameters and interdistances: AME 0.32; ALE 0.24; PME 0.26; PLE 0.26; AME–AME 0.3; AME–ALE 0.44; PME–PME 0.42; PME–PLE 0.7; ALE–PLE 0.18. Chelicerae 3.9 long. Sternum 3.4 long; 2.9 wide. Leg measurements: femur I 5.3 / patella 2.5 / tibia 5.2 / metatarsus 4.4 / tarsus 1.9 / total 19.3; II 4.8 / 2.3 / 4.2 / 4.0/ 1.6 / 16.9; III 4.3 / 2.1 / 4.0/ 3.7 / 1.6 / 15.7; IV 5.4 / 2.1 / 4.9 / 5.7 / 1.9 / 20.0. Leg formula 4123. Leg spination: I—femur d 1 - 1 -0, p0- 0-1; tibia v 2 - 1 p- 2 - 1 p- 2; metatarsus v 2 - 2 -0. II—femur d 1 - 1 -0, p0- 0-1; tibia v 1 p- 2 - 2 - 2; metatarsus v 2 - 2 -0. III—femur d 1 - 1 - 1, r 0-1 -0, p 0-1 - 1; tibia v 2 - 2 -0, r 0-1 - 1, p 0-1 -0; metatarsus p 1 - 1 -0, r 1 - 1 -0, v 2 - 2 - 1. IV—femur d 1 - 1 - 1, r0- 0-1, p0- 0-1; tibia r 0-1 - 1, v 2 - 2 -0; metatarsus p 1 - 1 -0, r 0-1 -0, v 2 - 2 - 1. Epigynum: epigynal plate not projected posteriolly; CO anterior, leveled with apices of SS; CO conspicuous; SS big, close to each other; PVP poor developed, linked at basal third of SS and enveloping partially the PS (Figs. 92–93, 103).

Variation. Length ( 7 males): total 11.1–14.1; carapace 5.3–6.4; femur I 4.6 –5,6; ( 10 females) total 13.0– 16.1; carapace 5.3–6.6; femur I 4.5–5.5.

Distribution. Bahia, Espírito Santo, Rio de Janeiro, São Paulo and Rio Grande do Sul, Brazil.

Other material examined. Brazil. Bahia: Nova Viçosa, [ 17 ° 52 ' 19.76 "S 39 ° 23 ' 8.12 "W], 1 male and 1 female, 23.III. 1993, C.B. Castro & P.S. Young ( MNRJ). Espírito Santo: Santa Tereza (Estrada Santa Tereza - Fundão), [ 19 ° 56 ' 13.23 "S 40 ° 28 ' 44.03 "W], 1 female, N.D. Santos and L.F. Reis ( MNRJ); Presidente Kennedy (Praia das Neves), 21 ° 14 '10,3"S 40 ° 58 ' 33 "W, 1 female, 5–8.X. 2009, T. Gonçalves Souza ( UFMG 8182). Rio de Janeiro: Vila da Penha, [ 22 ° 50 ' 39.08 "S 43 ° 18 ' 45.23 "W], 2 males and 1 female, N. O. dos Santos ( MNRJ); Distrito Federal [actual Rio de Janeiro city 22 ° 54 ' 12.74 "S 43 ° 12 ' 34.51 "W], 2 females, 22.VI. 1939, A. Passarelli and A. Carvalho ( MNRJ); Maricá, 1 male and 1 female, ( MNRJ); Rio de Janeiro, (Recreio dos Bandeirantes), [ 23 ° 1 ' 36.74 "S 43 ° 28 ' 9.81 "W], 2 female ( MNRJ 06446); Itauna, 1 female, 1.I. 2003 ( MNRJ 06437). São Paulo: Cananéia ( Ilha do Cardoso), [ 25 ° 7 '54.00"S 47 ° 57 '59.00"W], 1 male, IV. 2010, G.C. Piccoli ( MPEG 20252); 1 male, G.Q. Romero ( MPEG 20253).

Figures

FIGURES 17 – 24. Corinna demersa n. sp., male: (17) thricobothria on RTA, retrolateral. Corinna aechmea n. sp., male, tarsus I: (18) thricobothria; (19) thricobothria base; (20) tarsal organ; (21) thricobothria and tarsal organ; (22) thricobotrhial cluster; (23) scopula. Corinna ziriguidum n. sp., male, metatarsus IV: (24) cluster of ventral distal stout setae.

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.

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.