Bioacoustics of Aetana abadae

Description Male ( holotype ) MEASUREMENTS. Total body length 3.4, carapace width 1.4. Leg 1: 44.3 (10.6 + 0.6 + 10.6 + 19.2 + 3.3), tibia 2: 6.6, tibia 3: 4.5, tibia 4: 6.5; tibia 1 L/d: 80. Distance PME-PME 430 µm , diameter PME 140× 155 µm , distance PME-ALE ~ 40 µm ; AME absent. COLOR. Carapace ochre-yellow with narrow lateral marginal bands and wide dark brown median band including ocular area and clypeus; sternum ochre-yellow, with darker triangular mark posteriorly and dark labium; legs ochre-yellow with slightly darker rings on femora (subdistally, with light tip), and tibiae (proximally and subdistally, the latter followed by light tip); abdomen ochre-gray, dorsally and laterally covered with many black marks, ventrally with dark mark behind gonopore. BODY. Habitus as in Fig. 178 ; ocular area raised, each triad on additional short hump directed toward lateral, without process below ALE ( Fig. 191 ); carapace with very shallow median furrow in anterior part only; clypeus with distinctive pair of apophyses ( Fig. 191 ); sternum wider than long (0.95/0.65), unmodified. CHELICERAE. As in Fig. 191 , with pair of lateral processes proximally and pair of long lateral apophyses distally; without modified hairs; without stridulatory ridges. PALPS. As in Figs 189–190 ; coxa unmodified; trochanter with ventral and prolateral apophyses; femur with retrolateral hump, large prolateral apophysis, and ventro-distal apophysis; patella triangular in lateral view; tibia with retrolateral trichobothrium in very distal position; proximal part of procursus with bipartite retrolatero-ventral process, with complex and apparently partly hinged distal elements; bulb with only one process (weakly sclerotized embolus), distally with indistinct hump, without small knobs. LEGS. Without spines; with curved hairs on metatarsi 1–3; few vertical hairs; retrolateral trichobothrium on tibia 1 at 2%; prolateral trichobothrium absent on tibia 1, present on other tibiae; tarsus 1 with ~25 pseudosegments, only distally distinct. Male (variation) Tibia 1 in six other males: 9.8–10.6 (mean: 10.2). Dark spot behind gonopore absent in two males. Abdomen with or without additional white spots in dorso-lateral rows. Male from Casaroro Falls with large light brown mark on sternum posteriorly. Female In general similar to male but clypeus unmodified and more homogeneously dark brown; eye triads much closer together (distance PME-PME 165 µm ); with indistinct stridulatory apparatus between carapace and abdomen: small modified area medially on carapace ( Fig. 186 ) versus barely distinguishable hairless area on abdomen. Tibia 1 in 13 females : 7.8–8.8 (mean: 8.1). Epigynum large sclerotized plate with pair of light lateral humps ( Figs 192 , 195 , 213 ), with pair of very indistinct membranous pockets behind epigynum in weakly modified cuticle (weak transversal ridges) ( Figs 192 , 195–196 ). Internal genitalia as in Figs 193 and 215 , with distinct pair of sclerotized pockets.