Bioacoustics of Maghreba djabalija

Description Male ( holotype ) MEASUREMENTS. Total length 3.2, carapace width 1.3. Distance PME–PME 110 µm; diameter PME 95 × 115 µm; distance PME–ALE 25 µm; diameter AME 70 µm; distance AME–AME 20 µm. Leg 1: 25.3 (7.2 + 0.5 + 7.0 + 8.8 + 1.8), tibia 2: 4.8, tibia 3: 3.6, tibia 4: 4.2; tibia 1 L/d: 58; femora 1–4 diameters: 0.25, 0.22, 0.21, 0.21. COLOR (in ethanol). Carapace pale ochre-yellow, medially partly darker (brown V-mark behind ocular area; posterior part of pit darkened); clypeus not darkened; sternum dark brown, with black radial marks; legs ochre-yellow, without darker rings, with black marks on femora and tibiae, few also on metatarsi; abdomen gray, densely covered with dark and whitish marks; ventrally with wide dark brown band, band behind gonopore divided by two light longitudinal lines. BODY. Habitus as in Fig. 263 . Ocular area slightly raised. Deep thoracic pit and pair of shallow furrows diverging from pit toward posterior margin. Clypeus unmodified, rim not more sclerotized than in female. Sternum wider than long (0.90/0.65), unmodified. Abdomen posteriorly rounded, barely elongated beyond spinnerets. CHELICERAE. As in Figs 337–338 , with pair of frontal lateral apophyses, each with one large modified cone-shaped hair; distance between tips of modified hairs: 360 µm; with pair of light proximal frontal protrusions set with brushes of long hairs; lateral stridulatory ridges barely visible in dissecting microscope. PALPS. As is Figs 331–333 ; coxa with distinct retrolateral-ventral process; trochanter barely modified (low ventral rounded hump); femur not curved towards dorsal, distally widened and with low rounded ventral protrusion, proximally with prolateral stridulatory pick (modified hair), without retrolateral transversal line, with distinct retrolateral-ventral proximal process and distinct dorsal process; femur-patella joints slightly shifted toward prolateral side; tibia relatively long and slender, tibia-tarsus joints shifted toward retrolateral side; tarsus without macrotrichia; procursus ( Figs 334–336 ) with dorsal hairs slightly curved; on prolateral side with proximal ridge followed distally by distinct hump, free of hairs; distally with small ventral flap; procursus tip with strong ventral sclerite, semitransparent process, and distinctive apophysis inbetween (arrow in Fig. 336 ), main branch strongly curved towards dorsal, with semitransparent hairlike process and simple tip; genital bulb ( Figs 339–342 ) basal sclerite with dorsal apophysis; distal (main) sclerite large, with deep retrolateral pocket, strong dorsal process without teeth, ventral part with three teeth of different sizes, sperm duct opening in membranous area on prolateral side. LEGS. Femur 1 with single row of ~20 ventral spines; without curved hairs; with slightly higher than usual density of short vertical hairs prolaterally on tibiae 3–4; retrolateral trichobothrium of tibia 1 at 3.5%; prolateral trichobothrium absent on tibia 1, present on other leg tibiae; tarsal pseudosegments irregular and indistinct except ~5–8 distally. Male (variation) Tibia 1 in six males (incl. holotype ): 5.7–7.0 (mean 6.3). Female In general similar to male ( Fig. 264 ) but without spines on legs; with indistinct stridulatory apparatus between prosoma and abdomen: barely visible whitish processes on carapace and light brown areas frontally on abdomen; cheliceral stridulatory ridges not seen. Tibia 1 in ten females : 5.4–7.2 (mean 6.0). Epigynum as in Figs 345–347 , main epigynal plate trapezoidal, weakly protruding, with pair of low processes; with pair of indistinct round pockets (distance ~340 µm); posterior plate short and wide, simple; indistinct plate in front of epigynum, not elevated. Internal genitalia ( Figs 343–344 , 348–350 ) with elongate pore plates in transversal position, widening medially; dorsal arc with distinctive median elements, ventral arc with indistinct ventral rounded pocket.