Bioacoustics of Crossopriza maculipes

Redescription Male ( Uzbekistan , Ak-Mechet, ZMMU) MEASUREMENTS. Total length 5.4, carapace width 1.9. Distance PME–PME 110 µm; diameter PME 120 × 140 µm; distance PME–ALE 30 µm; diameter AME 120 µm; distance AME–AME 20 µm. Leg 1: 42.4 (12.5 + 0.9 + 12.1 + 14.4 + 2.5), tibia 2: 8.3, tibia 3: 6.3, tibia 4: 7.6; tibia 1 L/d: 58; femora 1–4 diameters: 0.32, 0.27, 0.27, 0.28. COLOR (in ethanol). Carapace ochre-yellow; carapace pit anteriorly light brown; sternum dark brown, with radial marks; legs ochre-yellow, without darker rings, with black lines on femora and tibiae; abdomen ochre-gray, with few indistinct dark marks dorsally; ventrally with distinct black median band, partly disrupted, with two parallel longitudinal marks behind gonopore. BODY. Habitus similar to C. sahtan sp. nov. (cf. Fig. 391 ). Ocular area slightly raised. Deep thoracic pit and pair of furrows diverging from pit toward posterior margin. Clypeus unmodified, only rim more sclerotized than in female. Sternum wider than long (1.30/0.85), unmodified. Abdomen slightly elongated, dorso-posteriorly angular. Gonopore with five epiandrous spigots ( Fig. 854 ); ALS with one widened spigot and one pointed spigot ( Fig. 855 ). CHELICERAE. As in Figs 832–833 , with two pairs of apophyses, lateral pair with 2–3 small processes (distinct in lateral view), median pair with one large modified cone-shaped hair each ( Fig. 859 ); distance between tips of modified hairs 50 µm; lateral stridulatory ridges fine ( Fig. 860 ; distances between ridges proximally ~4 µm, distally ~3 µm), visible in dissecting microscope. PALPS. As in Figs 823–825 ; coxa with rounded retrolateral hump; trochanter barely modified; femur distally strongly widened, with rounded ventral protrusion, proximally with prolateral stridulatory pick, retrolateral-ventral rim with row of sclerotized hair-bases, with barely visible retrolateral transversal line, without retrolateral proximal process; femur-patella joints shifted toward prolateral side; tibia large relative to femur, tibia-tarsus joints slightly shifted toward retrolateral side; tarsus without macrotrichia; tarsal organ capsulate ( Fig. 862 ); procursus ( Figs 826–828 ) straight, densely set with long hairs dorsally, few hairs slightly curved upwards; proximally on prolateral side with strong hump set with numerous long hairs and followed distally by thick sclerotized ridge, procursus tip ( Figs 856–857 ) with several distinctive elements: ventral sclerite with retrolateral branch, dorsal sclerite, prolateral partly sclerotized element, and retrolateral brush of short hair-like structures; genital bulb ( Figs 829–831 ) with simple basal sclerite connected to distal (main) sclerite, sperm duct opening on prolateral-dorsal side (arrow in Fig. 858 ); distal sclerite with indistinct retrolateral ridge and distinctive set of two prolateral sclerotized ridges, each with three rounded apophyses. LEGS. Femur 1 with single row of ~22 ventral spines ( Fig. 864 ); without curved hairs; few vertical hairs; retrolateral trichobothrium of tibia 1 at 4%; prolateral trichobothrium absent on tibia 1, present on other leg tibiae; tarsal pseudosegments indistinct except 2–3 distally; tarsal organs capsulate, with round to slightly irregular rims ( Fig. 863 ). Male (variation) Tibia 1 in 40 other males: 8.0–14.1 (mean 11.8). Abdomen usually also with whitish internal marks; ventral dark band on abdomen variably distinct, section behind gonopore with 2–4 longitudinal bands. Small males with fewer spines on femur 1 (smallest measured male with ~12 spines). Apophyses on prolateral bulbal ridges variably distinct, sometimes only two on each ridge; separation of ridges and angle between ridges very consistent. Retrolateral branch on ventral sclerite of procursus slightly variable in shape; in single male from Turkmenbashi slightly tilted (proximal rim bent towards retrolateral). Female In general similar to male but without spines on legs, with fewer and very indistinct stridulatory ridges on chelicerae ( Fig. 861 ; distances between ridges ~4.5 µm), and with stridulatory organ consisting of pair of weakly sclerotized but distinct processes posteriorly on carapace and pair of light brown plates anteriorly on abdomen. Tibia 1 in 63 females : 6.1–12.9 (mean 10.2). Epigynum as in Figs 836–837 and 865 , main epigynal plate semicircular, weakly protruding; posteriorly laterally strongly sclerotized, anteriorly weakly sclerotized, ochre-yellow with light brown median area; with pair of pockets very close to median line on both sides of median ridge (distance between pockets 25 µm), posteriorly slightly protruding; internal sclerotized arc and median round structure visible in uncleared specimens; pair of oblique black lines originating from posterior epigynal margin variably visible or not, possibly depending on degree of external sclerotization (difference not visible in cleared specimens); posterior plate short but wide. Internal genitalia ( Figs 834–835 , 838–840 ) with large oval pore plates converging anteriorly, dorsal arc strongly sclerotized but simple, ventral arc medially slightly modified, with simple median pouch. In the single female from Musa Khel ( Punjab ) the median epigynal area carrying the pockets is barely protruding towards posterior; this specimen is therefore assigned tentatively.