Bioacoustics of Tolteca sinnombre

Description Male ( holotype ) MEASUREMENTS . Total body length 1.25, carapace width 0.56. Distance PME-PME 45 µm; diameter PME 45 µm; distance PME-ALE 20 µm; distance AME-AME 15 µm; diameter AME 30 µm. Leg 1: 2.26 (0.63 + 0.17 + 0.58 + 0.55 + 0.33), tibia 2: 0.47, tibia 3: 0.43, tibia 4: 0.72; tibia 1 L/d: 7; diameters of leg femora 0.130 –0.135 , of leg tibiae 0.08. COLOUR (in ethanol). Prosoma and legs monochromous ochre-yellow, only carapace with slightly darker median line widening anteriorly; abdomen slightly darker ochre-grey, with some indistinct darker marks dorsally. BODY ( Fig. 36G ). Ocular area barely raised. Carapace without thoracic groove. Clypeus unmodified but with sclerotized rim, short (clypeus rim to ALE: 170 µm). Sternum wider than long (0.40/0.36), almost round (i.e., not heart-shaped), with pair of small but distinct anterior processes (~80 µm diameter at basis, ~80 µm long) near coxae 1. Abdomen globular. CHELICERAE ( Fig. 44D–E ). With pair of frontal apophyses pointing downwards; distance between tips of apophyses 75 µm; without stridulatory files. PALPS . In general possibly indistinguishable from congeners (cf. Figs 37 , 50 ) but patella ventrally apparently longer than in other species; coxa unmodified; trochanter without process; femur proximally without process, distally widened but simple, slightly curved towards dorsal; femur-patella joints very slightly shifted toward prolateral side; tibia very short, with two trichobothria; tibia-tarsus joints not shifted to one side; procursus very simple ( Fig. 44F ), with distal ventral process; genital bulb large, complex, in light microscope possibly indistinguishable from congeners (cf. Figs 38D–F , 51D–F ). LEGS . Without spines and curved hairs; with slightly increased density of short vertical hairs on tibia 1 (barely visible in dissecting microscope); retrolateral trichobothrium of tibia 1 at 63%; prolateral trichobothrium absent on tibia 1; tarsus 1 with five pseudosegments, all fairly distinct. Female In general, similar to male ( Fig. 36H ) but sternum without pair of anterior humps. Total body length: ~1.20–1.30; tibia 1 in four females : 0.48, 0.50, 0.53, 0.58. Epigynum ( Fig. 47 ) with very short band-shaped anterior plate densely set with short hairs; posterior plate wide, median part distinctly protruding anteriorly. Without knob between epigynum and pedicel. Internal genitalia ( Fig. 48 ) with pair of strong transversal sclerites, pair of distinct sacs (receptacles?), without (or with very small?) pore plates.