Bioacoustics of Stenoterommata leticiae

Description. Male ( holotype ). Color pattern in ethanol: carapace and legs reddish brown. Body with light pubescence, covered with golden setae. Abdomen dorsally brown with yellowish brown mottling, one large on anterior and other symmetrical along dorsum with no discernible chevron, and ventrally yellowish-brown, with four small posterior median spots group. Total length 15.52. Carapace 6.40 long, 5.22 wide, with short and procurved fovea. Abdomen 6.72 long, 3.70 wide. Thoracic region slightly raised. Clypeus narrow, 0.15. Eye tubercle weakly elevated, wider than long. Anterior eye row slightly procurved, posterior slightly recurved. Eye sizes: AME 0.40, ALE 0.30, PME 0.18 and PLE 0.26. Chelicerae with nine teeth in prolateral row, with ca. 30 basal smaller teeth and rastellum weak, formed by long thin setae. Intercheliceral tumescence large, pale yellow covered with few setae. Labium 0.40 long, 1.10 wide, with five cuspules. Maxillae with ca. 60 blunt cuspules on internal basal angle. Serrula developed. Sternum oval 3.20 long, 2.20 wide. Sternal sigilla small, granulate, marginal: anterior and median rounded, posterior oval-elongated, twice the size of anterior, away from margin by ca. 1/3 length. Palp: measurements: femur 3.11/ patella 1.50/ tibia 2.42/ cymbium 0.98/ total 8.01; spination: femur d0-0-1-1-2, tibia r1ap. Legs: measurements: I: femur 5.52/ patella 3.20/ tibia 4.50/ metatarsus 4.81/ tarsus 3.40/ total 21.43; II: 5.40/ 2.60/ 4.31/ 4.12/ 3.31/ 19.74; III: 4.60/ 2.21/ 3.31/ 4.40/ 2.12/ 16.64; IV: 6.21/ 2.40/ 5.50/ 6.32/ 3.01/ 23.45; spination: I: femur d1-1-1-0-1-1-1-2-1p, patella 0, tibia v1 r-0-2-(1r megaspine), p0-0-1-0, metatarsus v1 r-1r-0-0-1ap, p0-1-0-1, 0-0-1-0; II: femur d0-2p-1r-0-2-2-0, patella 0, tibia v1 p-1r-0-1r-1p-0-3ap, p0-1-0-1-0, metatarsus v0-1r-0-1r-0-0-2ap, p1-0-1-0-0-1, r0-0-1-0; III: femur d1p-2-2-2-0, patella p0-1-1-1, r0-0-1-0, tibia d0- 0-1-0, v2 -0-2-0-0-2ap, p0-1-0-1-0, r0-1-0-1-0, metatarsus d1r-0-1p-1p-0-0-2, v0-2-0-0-3ap, p1-0-0-1, r0-1-1-0-0; IV: femur d0-1-1-1p-1-2-2p, patella r0-0-1-0, tibia v2 -0-2-0-2ap, p0-1-0-1-0, r0-1-0-1-0, metatarsus d0-1p-1p-1r- 1p-0-0-2, v0-0-1p-2-0-1p-0-2-1p-3ap, r1-0-0-1-0-0-0. Metatarsal preening combs: III: 4VP, 4VR; IV: 3VP, 4VR. Tarsi I–IV flexible. Scopulae on tarsi I, II dense and symmetric, III, IV light. Scopulae on tarsi I, II undivided, III, IV divided by thin setae: III by six rows, IV by 10 rows. Scopulae on 1/5 of metatarsi I, II divided by five rows of setae, III, IV absent. STC large with double row of teeth: I–IV: 5–6. ITC on left tarsus IV and III, IV on right tarsi. Trichobothria and tarsal organ as in S. pavesii sp. nov. Four spinnerets: PLS: basal segment 1.10, median segment 0.80, apical segment triangular, 0.68 long. Spigots as in S. pavesii sp. nov. Palp: cymbium with thin setae, resembling tarsal scopulae setae; tibia long, narrow ( Figs 44, 46 ) and with shallow ventral excavation ( Figs 44, 46 ); tibial excavation and basal region of tegulum ( Fig. 45 ) with weak grooves, suggesting possible stridulatory apparatus; bulb piriform with five parallel keels ( Figs 45, 46 ). Female ( paratype IBSP 166201). Color pattern in ethanol and in living specimen as in male ( Fig. 5 ). Total length 19.67. Carapace 6.98 long, 5.78 wide, with short and procurved fovea ( Fig. 5 ). Abdomen 9.51 long, 5.30 wide. Thoracic region slightly raised. Clypeus narrow, 0.30 ( Fig. 5 ). Eye tubercle weakly elevated, wider than long. Anterior eye row procurved, posterior recurved. Eye sizes: AME 0.35, ALE 0.37, PME 0.22 and PLE 0.30. Chelicerae with eight teeth in prolateral row, with ca. 50 basal smaller teeth and rastellum weak, formed by long thin setae. Labium 0.75 long, 1.30 wide, with two cuspules. Maxillae with ca. 80 blunt cuspules on internal basal angle. Serrula absent. Sternum oval 3.84 long, 3.61 wide. Sternal sigilla as in male. Palp: measurements: femur 3.80/ patella 2.00/ tibia 2.41/ tarsus 2.30/ total 10.51; spination: tibia v0-0-2, p0-1-0, tarsus v1 r-0-0-0. Legs: measurements: I: femur 5.41/ patella 3.50/ tibia 4.01/ metatarsus 3.40/ tarsus 2.11/ total 18.43; II: 4.82/ 3.20/ 3.30/ 2.82/ 2.10/ 16.24; III: 4.09/ 2.50/ 2.60/ 3.51/ 2.00/ 14.70; IV: 5.61/ 3.20/ 4.31/ 5.11/ 2.00/ 20.23; spination: I: metatarsus v0-1r-0-1ap; II: tibia p0-1r-1r-1r-2ap, metatarsus v0-1r-1r-2ap, p0-1-0; III: patella p0-1-1-1, tibia d0-0- 1-0, v0-1-0-2ap, p1-1-0, r0-1-0, metatarsus d1r-2-0-2-0-2, v0-2-0-2-0-3ap, p0-1-0-1-0-1-0, r0-0-1; IV: tibia v0-0- 2ap, r0-1-0-1-0, metatarsus d0-2-0-2-0-2, v0-2-0-1p-0-2-0-3ap, p0-1-0-1-0-1-0. Metatarsal preening combs: II: 6VP; III: 4VP, 6VR; IV: 2VP, 5VR. Tarsi I, II not flexible, rigid and III, IV flexible. Scopulae on tarsi I, II dense and symmetric, III, IV light. Scopulae on tarsi I undivided, II–IV divided by thicker setae: II by one row, III by six rows and IV by 10 rows. Scopulae on full length of metatarsi I, II, absent on III, IV. STC large with double row of teeth: I: 4, 5, 5, 5; II: 5, 6, 5, 5; III: 4, 5, 5, 3; IV: 3, 5, 5, 4. ITC on tarsus IV. Palpal claw with four teeth on promargin. Trichobothria and tarsal organ as in S. pavesii sp. nov. Four spinnerets: PLS: basal segment 0.90, median segment 0.70, apical segment triangular 0.65 long. Spigots as in S. pavesii sp. nov. Spermathecae with posterior diagonally-elongated basal dome with 3–4 receptacula on each side ( Figs 47, 48 ). Variation. Males (n=2): total length 12.24–15.52; carapace 5.58–6.40 long; maxillae with 58–60 cuspules. Females (n=10): total length 13.80–20.20; carapace 5.90–7.70 long; maxillae with 68–80 cuspules.