Bioacoustics of Umbyquyra cuiaba

Description Male ( holotype , IBSP 10728) In life: light brown carapace and legs. Abdomen dark brown covered by red hairs with dark patch on dorsal side ( Fig. 16F ). In ethanol: same color as U. paranaiba gen. et sp. nov. Total length: 33.0. Carapace: 13.5 long, 12.5 wide. Clypeus: 0.4. Eye tubercle: 1.6 long, 2.1 wide. Eyes: anterior row slightly procurved and posterior recurved ( Fig. 16E ). AME: 0.3 long, 0.3 wide; PME: 0.25 long, 0.17 wide; ALE: 0.2 long, 0.35 wide; PLE: 0.2 long, 0.35 wide. Basal segment of chelicerae with 11 teeth. Labium: 2.0 long, 2.0 wide, with 112 cuspules. Endites with 150–155 cuspules. Stridulatory bristles with around 15 bristles on palp trochanter and 45 on leg I ( Fig. 17 E–F). Palp: femur 7, patella 2.6, tibia 7.4, tarsus 2.7, total 20. Leg I femur 10.8, patella 4.5, tibia 9.4, metatarsus 10.3, tarsus 6.7, total 41.7. II 12.7, 2.5, 8.5, 10.1, 6.6, 40.4. III 10.5, 2.0, 8.4, 9.7, 5.7, 36.3. IV 11.4, 3.0, 9.6, 11.2, 5.8, 50. Spination: palp: femur d0-0-2app, tibia v0-1p-0ap, p1-2-1-1-1-1-2-1-1-3ap, r0-1-3ap. Legs I tibia v2-1-1r-1-1r-1- 1ap-1apr-1app, r0-1-3ap, metatarsus v-1-0-0-1ap. II tibia v1-1r-1-1-1ap, p0-1-0-1-0ap, metatarsus v0- 1-1-0-0-1ap, p0-1-0ap. III femur d0-0-1apr, tibia d0-0-1r-1apr, v1-1-0-1apr-2app, p0-1-1ap, r1-1-0-1ap, metatarsus d0-1p-1r-1p-0-0ap, v1-1p-1-1p-0-1apr-1ap-1app, p0-1-0-0ap, r1-1-1-1ap. IV tibia v1-1-1-2- 1r-1p-1-0ap, p0-1-1-0ap, r0-1-0-1-0-1ap, metatarsus d0-1r-1p-0-1ap, v1-1-1p-1r-1p-1r-2app-2apr, p0- 0-1-0ap, r0-1-0-0-1ap. Metatarsus I with a slight basal curvature. Tibial apophysis of leg I: retrolateral branch projected with two strong distal spines with 2-3 median setae; prolateral branch very short with a distal spine and a sub basal spine ( Figs 16C , 17D ). PLS basal, median and apical segments 1.8, 1.8, 2.0 long, respectively. Female ( paratype , IBSP 8933) In ethanol: same color as Umbyquyra paranaiba gen. et sp. nov. , except black abdomen in the posterior half ( Fig. 16F ). Total length: 31. Carapace 13.5 long, 11 wide. Clypeus 0.35. Eye tubercle 1.2 long, 2.0 wide. AME 0.4 long, 0.35 wide; PME 0.25 long, 0.25 wide; ALE 0.25 long, 0.45 wide; PLE 0.25 long, 0.2 wide. Basal segment of chelicerae with 10 teeth. Labium 1.5 long, 2 wide, with 100 cuspules. Endites with 120–125 cuspules. Stridulatory bristles as in male. Palp: femur 8.1, patella 1.7 tibia 4.2, tarsus 5, total 19. Leg I femur 9.6, patella 3.0, tibia 8.3, metatarsus 5.6, tarsus 4.2, total 30.7. II femur 6.8, patella 3.5, tibia 6.1, metatarsus 4.8, tarsus 3.8, total 25. III femur 6.8, patella 4.0, tibia 4.7, metatarsus 6.7, tarsus 4.0, total 26.2. IV femur 7.0, patella 4.0, tibia 10, metatarsus 10.5, tarsus 4.2, total 35.7. Spination: palp: femur d0-0-2app, tibia v0-1p-0ap, p1-2-1-1-1-1-2-1-1-3ap, r0- 1-3ap. Leg I tibia v2-1-1r-1-1r-1-1ap-1apr-1app, r0-1-3ap, metatarsus v-1-0-0-1ap. II tibia v1-1r-1-1- 1ap, p0-1-0-1-0ap, metatarsus v0-1-1-0-0-1ap, p0-1-0ap. III femur d0-0-1apr, tibia d0-0-1r-1apr, v1- 1-0-1apr-2app, p0-1-1ap, r1-1-0-1ap, metatarsus d0-1p-1r-1p-0-0ap, v1-1p-1-1p-0-1apr-1ap-1app, p0-1-0-0ap, r1-1-1-1ap. IV tibia v1-1-1-2-1r-1p-1-0ap, p0-1-1-0ap, r0-1-0-1-0-1ap, metatarsus d0- 1r-1p-0-1ap, v1-1-1p-1r-1p-1r-2app-2apr, p0-0-1-0ap, r0-1-0-0-1ap. Metatarsus I with a slight basal curvature. PS basal, median and apical segments 1.8, 1.8, 2.0 long, respectively. Spermathecae with oval and elongated RS, with short ducts, apart from each other by approximately three times their diameter ( Fig. 16D ).