Bioacoustics of Crossopriza manakhah

Description Male ( holotype ) MEASUREMENTS. Total length 3.4, carapace width 1.3. Distance PME–PME 75 µm; diameter PME 90 × 105 µm; distance PME–ALE 30 µm; diameter AME 90 µm; distance AME–AME 30 µm. Leg 1: 33.2 (9.3 + 0.6 + 8.7 + 12.4 + 2.2), tibia 2: 5.6, tibia 3: 4.0, tibia 4 missing; tibia 1 L/d: 70; femora 1–3 diameters: 0.21, 0.18, 0.18. COLOR (in ethanol). Carapace ochre-yellow, median pit anteriorly light brown; sternum brown, with black radial marks; legs ochre-yellow, without darker rings, with distinct black lines on femora and tibiae; abdomen ochre-gray, with distinct dark and white marks dorsally and laterally; 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 slightly more sclerotized than in female. Sternum wider than long (0.9/0.5), unmodified. Abdomen oval, dorsoposteriorly angular. CHELICERAE. As in Figs 634–635 , with pair of strong frontal apophyses provided with one large modified cone-shaped hair each; distance between tips of modified hairs 60 µm; proximally partly whitish and slightly protruding; lateral stridulatory ridges fine but visible in dissecting microscope. PALPS. As in Figs 625–627 ; coxa with rounded retrolateral hump; trochanter barely modified; femur distally strongly widened, with rounded ventral protrusion, proximally with prolateral stridulatory pick, with retrolateral transversal line, without retrolateral proximal process; femur-patella joints slightly shifted toward prolateral side; tibia-tarsus joints shifted toward retrolateral side; tarsus without macrotrichia; procursus ( Figs 628–630 ) slightly curved towards ventral, proximally on prolateral side with strong hump set with numerous long hairs, dorsal hairs not curved, procursus tip with short ventral sclerite, distinctive prolateral process, and further membranous processes; genital bulb ( Figs631–633 ) with simple basal sclerite connected to distal (main) sclerite, sperm duct opening not seen; distal sclerite with two simple processes. LEGS. Femur 1 with single row of ~18 ventral spines; without curved hairs; few vertical hairs; retrolateral trichobothrium of tibia 1 at 3.5%; prolateral trichobothrium absent on tibia 1, present on other leg tibiae; tarsal pseudosegments not seen. Male (variation) Tibia 1 in three other males: 6.1, 7.7, 8.6. The only male from the three southern localities (from Al Kawd) with slightly different procursus tip: long transparent process shorter and prolateral process slightly less curved. Female In general similar to male 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 seven females : 6.3–7.0 (mean 6.7). Epigynum as in Figs 638–639 , main epigynal plate roughly triangular, weakly protruding; with pair of shallow pockets close to median line on both sides of wide median ridge (distance between pockets 30 µm); internal sclerotized arc poorly visible in uncleared specimens; posterior plate large, widened laterally. Internal genitalia ( Figs 636–637 , 640–642 ) with relatively small crescent-shaped pore plates, dorsal arc strongly sclerotized, ventral arc only medially strongly sclerotized, apparently without median pouch or pocket.