Bioacoustics of Crossopriza sengleti

Description Male ( holotype ) MEASUREMENTS. Total length 4.0, carapace width 1.6. Distance PME–PME 90 µm; diameter PME 90 × 110 µm; distance PME–ALE 25 µm; diameter AME 85 µm; distance AME–AME 35 µm. Leg 1: 39.0 (11.3 + 0.7 + 10.5 + 14.1 + 2.4), tibia 2: 7.2, tibia 3: 5.3, tibia 4: 6.1; tibia 1 L/d: 66; femora 1–4 diameters: 0.23, 0.20, 0.19, 0.20. COLOR (in ethanol). Carapace monochromous ochre-yellow; sternum laterally ochre-yellow, medially light brown; legs ochre-yellow, without darker rings, with distinct black lines on femora and (few) on tibiae; abdomen pale gray, with many internal whitish marks and few indistinct small dark marks posteriorly; ventrally without dark median band. 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 with light median process (arrow in Fig. 768 ), ~0.18 long; rim of clypeus slightly more sclerotized than in female. Sternum wider than long (0.10/0.75), unmodified. Abdomen oval, dorso-posteriorly slightly angular. CHELICERAE. As in Figs 774–775 , with two pairs of apophyses, lateral pair simple, pointing towards distal, median pair with one large modified cone-shaped hair each; distance between tips of modified hairs 105 µm; lateral stridulatory ridges fine but visible in dissecting microscope. PALPS.As in Figs 765–767 ; coxa with rounded retrolateral hump; trochanter barely modified;femur distally only weakly widened, proximally with prolateral stridulatory pick, without retrolateral transversal line, without retrolateral proximal process; femur-patella joints shifted toward prolateral side; tibia-tarsus joints shifted toward retrolateral side; tarsus without macrotrichia; procursus ( Figs 769–770 ) straight and slightly tapering towards distally, proximally on prolateral side with low hump set with numerous long hairs, dorsal hairs not curved, procursus tip with distinctly bifid and weakly sclerotized ventral sclerite, distinctive prolateral apophysis (asterisk in Fig. 769 ), and further membranous processes; genital bulb ( Figs 771–773 ) with simple basal sclerite connected to distal (main) sclerite, sperm duct opening not seen; distal sclerite with strong retrolateral ridge, with strong prolateral fold, and small and weakly sclerotized ventral pointed process. LEGS. Femur 1 with single row of ~25 ventral spines; without curved hairs; few vertical hairs; retrolateral trichobothrium of tibia 1 at 3%; prolateral trichobothrium absent on tibia 1, present on other leg tibiae; tarsal pseudosegments not seen. Male (variation) Tibia 1 in second male: 9.0. 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 small processes posteriorly on carapace and pair of indistinct plates anteriorly on abdomen. Tibia 1 in two females : 8.5, 9.1. Epigynum as in Figs 778–779 ; main epigynal plate roughly triangular, weakly protruding; with pair of large pockets close to median line on both sides of wide median ridge (distance between pockets 30 µm); internal sclerotized arc medially visible in uncleared specimens; posterior plate indistinct, weakly sclerotized, short but wide. Internal genitalia ( Figs 776–777 , 780–782 ) with drop-shaped pore plates narrowing and converging anteriorly, dorsal arc simple, ventral arc medially strongly widened and sclerotized, apparently without median pouch or pocket.