Bioacoustics of Amazonius subcaeruleus

Redescription. Female (ICN-Ar-7530). Total length, not including chelicerae or spinnerets 31.40. Carapace 16.26 long, 13.68 wide, 8.04 high. Chelicera: 8.31 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 11.95, 7.49, 9.75, 8.77, 5.21, 43.17; II: 10.92, 6.69, 8.46, 8.45, 4.85, 39.37; III: 9.92, 5.89, 7.38, 8.53, 4.84, 36.56; IV: 12.16, 6.39, 10.26, 11.29, 4.71, 44.81; Palp: 8.33, 4.90, 5.63, -, 5.44, 24.3. Midwidths: femora I–IV= 2.43, 2.74, 2.76, 2.16, palp= 2.01; patellae I–IV= 2.72, 2.38, 2.70, 2.63, palp= 2.22; tibiae I–IV= 2.32, 2.14, 2.30, 2.50, palp= 2.13; metatarsi I–IV= 2.20, 1.97, 1.77, 1.66; tarsi I–IV= 1.99, 1.92, 1.85, 1.89, palp= 1.94. Abdomen: 15.16 long, 8.35 wide. Spinnerets: PMS, 1.78 long, 0.84 wide, 0.67 apart; PLS, 2.87 basal, 1.70 middle, 2.76 distal; midwidths 2.04, 1.91, 1.52, respectively. Carapace: 1.19 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: deep, straight, 2.01 wide. Eyes: eye tubercle 1.24 high, 2.11 long, 3.60 wide. Clipeus: absent. Anterior eye row straight, posterior slightly recurved. Eye size and interdistances: AME 0.76, ALE 0.81, PME 0.42, PLE 0.65, AME–AME 0.56, AME–ALE 0.28, AME–PME 0.30, ALE–ALE 2.61, ALE–PME 0.55, PME–PME 1.92, PME–PLE 1.18, PLE–PLE 2.75, ALE–PLE 0.29. Maxilla: length to width 1.63. Cuspules: 141 spread over ventral inner heel. Labium: 2.09 long, 2.76 wide, with ca. 195 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 discernible pattern on a ventral-basal portion of chelicera before the teeth row ( Fig. 350 ). Sternum: 7.80 long, 5.95 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 1/2 distal; IV 1/3 distal. IV divided by rows of setae. Femora I ventrally and laterally with short scale like setae ( Figs 355–356 ). Spination: Palps and legs (ventral apical: tibia/metatarsi): Palp 0; I: 0/0; II 2/0; III 1/0; IV 0/2. 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. 349 ). Spermathecae ( Fig. 351 ): Two spermathecae completely separated, curved apically with an apical constriction forming lobes disposed as a crown, two striae from base to apex form a fold on ventral view. Color pattern (preserved in alcohol): Carapace and abdomen dark brown, legs and palpal femora brown with golden setae; tibia, metatarsus and tarsus brown. Redescription. Male holotype (SMF 69513-84 ) . Total length, not including chelicerae or spinnerets 23.30. Carapace 10.61 long, 10.10 wide, 2.92 high. Chelicera: 3.69 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: missing on both sides; II:11.57, 5.24, 9.71, 9.80, 4.89, 41.21; III: 9.84, 4.58, 7.94, 9.05, 4.60, 36.01; IV: 12.20, 5.16, 10.70, 12.72, 4.47, 45.25; Palp: 7.71, 4.03, 6.78, -, 2.20, 20.72. Midwidths: femora II–IV (I missing) = 1.97, 2.21, 2.09, palp= 1.51; patella II–IV= 1.97, 2.01, 1.90, palp= 1.88; tibiae II–IV= 1.51, 1.51, 1.56, palp= 1.57; metatarsi II–IV= 1.07, 1.00, 1.04; tarsi II–IV= 1.06, 1.30, 1.23, palp= 1.69. Abdomen: 12.17 long, 7.94 wide. Spinnerets: PMS, 1.08 long, 0.57 wide, 0.43 apart; PLS, 2.07 basal, 1.34 middle, 2.39 distal; midwidths 0.77, 0.83, 0.65, respectively. Carapace: 1.05 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: deep, straight, 0.80 wide. Eyes: eye tubercle 0.34 high, 1.73 long, 2.48 wide. Clipeus: absent. Anterior eye row straight, posterior slightly recurved. Eye size and interdistances: AME 0.67, ALE 0.54, PME 0.33, PLE 0.54, AME–AME 0.30, AME–ALE 0.22, AME–PME 0.13, ALE–ALE 1.72, ALE–PME 0.31, PME–PME 1.38, PME– PLE 0.13, PLE–PLE 1.81, ALE–PLE 0.20. Maxilla: length to width 2.45. Cuspules: ca. 155 spread over ventral inner heel. Labium: 1.59 long, 1.91 wide, with ca. 154 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 pattern on a ventral-basal portion of chelicera before the teeth row. Sternum: 5.69 long, 4.56 wide. Legs: Formula I = IV II III, length leg IV to leg I: 0.96 (legs I missing, but see remarks below). Scopula: Tarsi II–IV fully scopulate; IV with a few sparse setae. Metatarsi II fully scopulate; III 2/3 distal; IV 1/3 distal. IV divided by rows of setae. Spination: Palps and legs (ventral apical: tibia/metatarsi): Palp 1/-; I: missing; II: 2/0; III 0/2; IV 0/2. Maxillary stridulatory organ: weakly developed, composed of slender setae with rugose aspect, not disposed on an ordered line, grouped forming an oval patch on the prolateral face of the maxillae. Tibial apophysis: two processes, retrolateral longer than prolateral, one spine at side of prolateral, one at apical part of retrolateral process. Metatarsus I folds on retrolateral side of tibial apophysis. Both holotype’s leg I missing (see remarks below). Palp ( Figs 345–348 ): tegulum length 0.94, width 1.24, embolus proximal width 0.54, length 4.01. Embolus proximal portion straight. Embolus length to tegulum length: 4.36. Embolus roughly straight with a slight curvature distally, tapering from its half to its tip in dorsal view. Embolus tip roughly straight. Color pattern (preserved in alcohol): Carapace, legs, palpal femora, and tibiae light brown. Whitish rings on distal femora, patellae, tibiae and metatarsi. Abdomen beige. Coxae, sternum, maxillae and labium light brown, a littler darker on anterior half of coxae I, II and the maxillae.