Bioacoustics of Amazonius elenae

Redescription. Female (MNRJ 7712): Total length, not including chelicerae or spinnerets 40.84. Carapace 16.38 long, 14.66 wide, 8.95 high. Chelicera: 9.25 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 11.19, 7.57, 10.44, 8.47, 5.21, 42.88; II: 11.22, 6.89, 9.24, 8.74, 5.82, 41.91; III: 11.21, 6.26, 8.95, 9.41, 5.48, 41.31; IV: 13.37, 6.58, 12.10, 12.31, 5.42, 49.78. Palp: 9.26, 5.31, 6.31, -, 5.81, 26.59. Midwidths: femora I–IV= 2.84, 2.70, 2.81, 2.67, palp= 2.21; patellae I–IV= 3.26, 2.95, 2.82, 2.90, palp= 2.19; tibiae I–IV= 2.74, 2.46, 2.36, 2.79, palp= 2.10; metatarsi I–IV= 2.17, 2.03, 1.76, 1.67; tarsi I–IV= 2.00, 1.91, 1.88, 2.03, palp= 2.04. Abdomen: 23.15 long, 16.52 wide. Spinnerets: PMS, 2.24 long, 1.44 wide, 1.03 apart; PLS, 3.36 basal, 2.64 middle, 3.38 distal; midwidths 2.07, 2.08, 1.51, respectively. Carapace: 1.12 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: deep, straight, 2.19 wide. Eyes: eye tubercle 1.18 high, 2.45 long, 4.26 wide. Clypeus: absent. Anterior eye row straight, posterior slightly recurved. Eye size and interdistances: AME 0.66, ALE 0.89, PME 0.47, PLE 0.63, AME–AME 0.85, AME–ALE 0.48, AME–PME 0.37, ALE–ALE 2.84, ALE–PME 0.52, PME–PME 2.15, PME–PLE 0.27, PLE–PLE 3.06, ALE–PLE 0.38. Maxilla: length to width 1.43. Cuspules: ca. 148 spread over ventral inner heel. Labium: 2.62 long, 2.58 wide, with ca. 154 cuspules spaced by one diameter from each other on anterior third. Chelicera: basal segment with 10 teeth in row. Strikers: Long and short filiform setae disposed without any discernible pattern on a ventral-basal portion of chelicera before tooth row ( Fig. 323 ). Sternum: 8.60 long, 6.03 wide. Legs: Formula: IV I II III. Length leg IV to leg I: 1.16. Scopula: Tarsi I–IV fully scopulate; IV with few sparse setae. Metatarsi I–II fully scopulate; III 1/2 distal; IV 1/4 distal. IV divided by rows of setae. Spination: Palp and legs (ventral apical: tibia/metatarsi): Palp 0; I: 0/0; II 0/0; III 1/1; IV 0/1. Maxillary stridulatory organ ( Fig. 322 ): weakly developed, composed of slightly thick setae with rugose aspect, not disposed on an ordered line, grouped forming an oval patch on the prolateral face of the maxillae. Spermathecae ( Fig. 319 ): Two spermathecae completely separated, roughly straight, with numerous apical small to median lobes, two striae from base to apex form fold on ventral view. Color pattern (preserved in alcohol): Carapace and abdomen light brown with golden setae, legs and palpal femora light brown, tibia and metatarsus distal with white-pink ring. Redescription. Male (MZUSP 35369). Total length, not including chelicerae or spinnerets 25.16. Carapace 11.04 long, 9.41 wide, 7.15 high. Chelicera: 5.25 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 12.10, 6.30, 10.84, 9.15, 5.16, 43.55; II: 10.56, 5.81, 9.64, 9.12, 4.49, 39.62; III: 10.47, 5.05, 8.56, 8.78, 4.62, 37.48; IV: 11.97, 5.05, 11.48, 12.50, 4.33, 45.33; Palp: 7.71, 4.18, 6.03, -, 1.96, 19.88. Midwidths: femora I–IV= 1.85, 1.90, 1.98, 1.94, palp= 1.35; patellae I–IV= 2.00, 1.91, 1.93, 1.86, palp= 1.40; tibiae I–IV= 1.55, 1.59, 1.51, 1.55, palp= 1.43; metatarsi I–IV= 1.19, 1.14, 1.04, 1.10; tarsi I–IV= 1.18, 1.17, 1.18, 1.17, palp= 1.26. Abdomen: 13.31 long, 7.71 wide. Spinnerets: PMS, 1.25 long, 0.66 wide, 0.66 apart; PLS, 1.48 basal, 1.31 middle, 2.48 distal; midwidths 0.87, 0.84, 0.69, respectively. Carapace: 1.17 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: deep, straight, 1.61 wide. Eyes: eye tubercle 1.38 high, 1.74 long, 2.87 wide. Clipeus: absent. Anterior eye row straight, posterior slightly recurved. Eye size and interdistances: AME 0.68, ALE 0.56, PME 0.42, PLE 0.48, AME–AME 0.57, AME–ALE 0.14, AME–PME 0.16, ALE–ALE 2.07, ALE–PME 0.26, PME–PME 1.65, PME–PLE 0.05, PLE–PLE 2.06, ALE–PLE 0.11. Maxilla: length to width 1.92. Cuspules: ca. 135 spread over ventral inner heel. Labium: 1.43 long, 1.49 wide, with ca. 135 cuspules spaced by one diameter from each other on anterior third. Chelicera: basal segment with 9 teeth in row. Strikers: Long and short filiform setae, disposed without any discernible pattern on a ventral-basal portion of chelicerae before the teeth row ( Fig. 321 ). Sternum: 5.35 long, 4.45 wide. Legs: Formula: I = IV II III. Length leg IV to leg I: 1.04. Scopula: Tarsi I–IV fully scopulate; IV with a few sparse setae. Metatarsi I–II fully scopulate; III 2/3 distal; IV 1/4 distal. IV divided by rows of setae. Spination Palps and legs (ventral apical: tibia/metatarsi): Palp 0; I: 1 behind retrolateral process; II: 2/0; III 0/2; IV 1/2. Maxillary stridulatory organ: weakly developed, composed of slightly thick setae with rugose aspect, not disposed on an ordered line, grouped forming an oval patch on the prolateral face of the maxillae ( Fig. 320 ). Tibial apophysis ( Figs 316–318 ): two processes, retrolateral longer than prolateral, one spine at side of prolateral, one at apical part of retrolateral process. A rounded protuberance behind retrolateral process. Metatarsus I folds on retrolateral side of tibial apophysis. Palp ( Figs 312–315 ): tegulum length 0.88, width 1.22, embolus proximal width 0.57, embolus length 3.20. Embolus proximal portion straight. Embolus length to tegulum length: 3.64. Embolus distal third curves abruptly to retrolateral side. Embolus narrows to its tip ending in a roughly straight tip. Color pattern (preserved in alcohol): Carapace and abdomen brown with some golden setae, leg and palpal femora brown with golden setae, tibia and metatarsus apically with white-pink ring.