Bioacoustics of Guaranita yaculica

Redescription (amendments; see Huber 2000 , Torres et al . 2016 ) Measurements of male from Calilegua National Park: total body length 0.98, carapace width 0.45; distance PME–PME 45 µm; diameter PME 45 µm; distance PME–ALE 20 µm; distance AME–AME 20 µm; diameter AME 25 µm. Leg 1: 2.20 (0.62+ 0.14 +0.56 +0.54 +0.34), tibia 2: 0.46, tibia 3: 0.40, tibia 4: 0.68; tibia 1 L/d: 9; diameters of leg femora 0.10; of leg tibiae: 0.06. Tibia 1 in 16 males (incl. holotype ): 0.50 – 0.62 (mean 0.57). Sternum slightly wider than long (0.33/0.31). Chelicerae as in Fig. 15A – C , 18A ; stridulatory files with ~17 – 23 ridges; distances between ridges proximally ~0.6 µm, distally ~2.3 µm ( Fig. 18B ). Pedipalp as in Fig. 14A – C ; tibia with two trichobothria; palpal tarsal organ capsulate, with small opening; procursus as in Fig. 15D – F and 18D – F , with large transparent ventral membrane, distinctive dorsal flap, and tip bent towards dorsal; genital bulb as in Figs 15G – I and 18D – F , with simple proximal sclerite, distal sclerite not widened in mid-section. Legs without spines and curved hairs; vertical hairs not seen in dissecting microscope but present on tibia 1 ( Fig. 19A – C ), apparently in two rows (one prolateral and one retrolateral); prolateral trichobothrium absent on tibia 1, present on other leg tibiae; metatarsi 3 and 4 with few (1 – 3) slender hairs proximally on retrolateral-ventral side ( Fig. 19H ). Gonopore with four epiandrous spigots ( Fig. 17F ); spinnerets as in female ( Fig. 17D ; see below). Tibia 1 in 33 females : 0.48 – 0.64 (mean 0.55). Female chelicerae without stridulatory ridges ( Fig. 18C ). Female internal genitalia with median membranous sac (receptacle?) ( Fig. 16C – D ); apparently with small pore plates ( Fig. 32C ). Each ALS ( Fig. 17B – C ) with one strongly widened spigot, one long pointed spigot, and five cylindrical spigots (of which one is much wider than the others); each PMS with two conical spigots; PLS without spigots. Palpal tarsal organ capsulate with small opening (diameter of opening 1.1 µm); leg tarsal organs with very small openings (diameters 0.7 – 0.9 µm; Fig. 20A – C ). Metatarsi 3 and 4 with long slender hairs as in male ( Fig. 19G ).