Bioacoustics of Aetana kiukoki

Description Male ( holotype ) MEASUREMENTS. Total body length 3.0, carapace width 1.2. Leg 1: 34.2 (7.9 + 0.5 + 8.0 + 14.8 + 3.0), tibia 2: 5.0, tibia 3: 3.5, tibia 4: 5.1; tibia 1 L /d: 72. Distance PME-PME 355 µm , diameter PME 150× 120 µm , distance PME-ALE ~ 35 µm ; AME absent. COLOR. Carapace ochre-yellow with narrow lateral marginal bands and wide dark brown median band including ocular area and clypeus; sternum with pair of wide brown bands converging posteriorly; legs greenish ochre 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 and white marks, ventrally with dark band behind gonopore and very indistinct mark in front of spinnerets. BODY. Habitus as in Figs 51–52 ; ocular area raised, each triad on additional short stalk directed toward lateral ( Figs 59 , 62–63 ), without median process; carapace with very shallow median furrow in anterior part only ( Fig. 63 ); clypeus with large distinctive process, strongly protruding in upper part, with two pairs of rounded apophyses in distal part, densely covered with small scales ( Figs 65, 66 ); sternum wider than long (0.75/0.60), unmodified. ALS and PMS as in Fig. 68. CHELICERAE. As in Fig. 59 , with pair of dark lateral apophyses proximally and pair of weakly sclerotized humps laterally, without modified hairs; without stridulatory ridges. PALPS. As in Figs 57–58 ; coxa unmodified; trochanter with short retrolatero-ventral apophysis; femur with strong retrolateral apophysis distally curved toward ventral; patella large; tibia small, dorsal trichobothrium in very proximal position, retrolateral trichobothrium in very distal position; tarsus with long procursus, distally complex, apparently with two hinged structures; bulb with large embolus and smaller, semitransparent, pointed process. LEGS. Without spines; with curved hairs on metatarsi 1–3 (few curved hairs also on tibiae 1–2); few vertical hairs; retrolateral trichobothrium on tibia 1 at 3%; prolateral trichobothrium absent on tibia 1, present on other tibiae; tarsus 1 with ~30 pseudosegments, only distally distinct. Male (variation) Tibia 1 in 48 other males: 7.0–9.8 (mean: 8.2). Ventral mark behind gonopore in most males slightly asymmetrical. Female In general similar to male ( Fig. 53 ) but clypeus unmodified; eye triads much closer together (distance PME-PME 155 µm ), not on stalks ( Fig. 64 ); without stridulatory apparatus between carapace and abdomen. Tibia 1 in 56 females : 4.9–7.5 (mean: 6.1); dark and light rings on legs often more distinct than in males. Tarsus 4 comb-hairs with very dense tines ( Fig. 69 ). Epigynum in anterior part weakly sclerotized, internal structures visible through cuticle, with flat, tongue-shaped scape ( Figs 60 , 87 ), without membranous pockets behind epigynum. Internal genitalia as in Figs 61 and 89 ; pore plates close together; without sclerotized internal pockets; with distinct transversal sclerotized ridges provided with many small teeth. The single female from Mt. Hamiguitan cannot be unambiguously assigned to this species rather than to A. paragua and is therefore assigned tentatively.