Bioacoustics of Crossopriza miskin

Description Male ( holotype ) MEASUREMENTS. Total length 3.0, carapace width 1.05. Distance PME–PME 60 µm; diameter PME 80 × 100 µm; distance PME–ALE 30 µm; diameter AME 70 µm; distance AME–AME 30 µm. Leg 1: 23.2 (6.5 + 0.4 + 6.2 + 8.4 + 1.7), tibia 2: 3.8, tibia 3: 2.7, tibia 4: 3.5; tibia 1 L/d: 59; femora 1–4 diameters: 0.17, 0.14, 0.13, 0.14. COLOR (in ethanol). Carapace ochre-yellow, with slightly darker median band including ocular area; clypeus not darkened; sternum ochre-yellow with brown speckles; legs ochre-yellow, without darker rings, with black spots (rather than lines) on femora and (few) on tibiae (cf. Figs 709–710 ); abdomen pale gray, with dark lines around heart area and posterior median mark; ventrally with distinct black pattern (disrupted median band). BODY. Habitus as in Figs 698–699 . Ocular area slightly raised. Shallow but wide thoracic pit and pair of furrows diverging from pit toward posterior margin. Clypeus unmodified, only rim slightly more sclerotized than in female. Sternum wider than long (0.75/0.60), unmodified. Abdomen strongly elongated and pointed above spinnerets. CHELICERAE. As in Figs 714–715 , with pair of frontal distal apophyses provided with one large modified cone-shaped hair each, and pair of lateral apophyses directed towards lateral; distance between tips of modified hairs 85 µm; lateral stridulatory ridges barely visible in dissecting microscope. PALPS.As in Figs 706–708 ; coxa with rounded retrolateral hump; trochanter barely modified; femur distally strongly widened, with rounded ventral protrusion, proximally with prolateral stridulatory pick, without retrolateral transversal line, without retrolateral proximal process; femur-patella joints shifted toward prolateral side; tibia-tarsus joints slightly shifted toward retrolateral side; tarsus without macrotrichia; procursus straight, prolateral proximal hump set with numerous long hairs, long dorsal hairs not curved, procursus tip ( Figs 711–713 ) very simple, without (or with strongly reduced) ventral sclerite; genital bulb ( Figs 716–718 ) with simple basal sclerite connected to distal (main) sclerite, sperm duct opening not seen; distal sclerite with retrolateral ridge and distinctive set of prolateral apophyses and ridges. LEGS. Femur 1 with single row of ~20 ventral spines; without curved hairs; few vertical hairs; retrolateral trichobothrium of tibia 1 at 4%; prolateral trichobothrium absent on tibia 1, present on other leg tibiae; tarsi without regular pseudosegments (except for 2–3 at tip). Male (variation) Tibia 1 in second male: 6.2. Female In general similar to male ( Figs 700–701 ) but without spines on legs, apparently without stridulatory files on chelicerae, and with stridulatory organ consisting of pair of weakly sclerotized but distinct processes posteriorly on carapace and pair of barely visible plates anteriorly on abdomen. Tibia 1 in six females : 4.1–4.9 (mean 4.4). Epigynum as in Figs 721–722 , small relative to abdomen, main epigynal plate semicircular, weakly protruding; with pair of distinct pockets close together (25 µm apart); internal sclerotized arc and median anterior structure visible in uncleared specimens; posterior plate short but wide. Internal genitalia ( Figs 719–720 , 723–725 ) with large pore plates wide apart and converging anteriorly, dorsal arc simple, ventral arc with elongate median modification (pouch?) of unknown function.