Bioacoustics of Nita elsaff

Male ( holotype ). Total length 1.7, carapace width 0.76. Leg 1: 6.5 (1.73 + 0.30 + 1.80 + 2.03 + 0.63), tibia 2: 1.33, tibia 3: 1.07, tibia 4: 1.50. Tibia 1 length/diameter (L/d): 23. Habitus as Fig. 1 ; coloration mostly pale ochre-yellow, carapace with narrow median light brown stripe widening frontally to cover ocular area, abdomen monochromous grey. Ocular area slightly elevated; thoracic furrow present, indistinct and shallow; distance PME–PME 115 Μm; diameter PME 55 Μm; distance PME–ALE 20 Μm; distance AME–AME 25 Μm, diameter AME 40 Μm. Sternum wider than long (0.54/0.48), without frontal humps. Clypeus distinctively modified, with strong hairs situated on a median protrusion ( Figs. 2 , 7 ); chelicerae with pair of distinctive frontal apophyses ( Figs. 2 , 8 ), with stridulatory ridges ( Fig. 12 ). Palps as in Figures 3 and 4 ; trochanter projecting ventrally but without distinct apophysis; femur, patella, and tibia widened but otherwise unmodified; procursus distinctive, strongly sclerotized, with small sclerotized flap proximally, long spine and further partly membranous flap ( Fig. 11 ) distally; bulb with one cylindrical projection (presumably the embolus) ending in curved spine ( Figs. 3 , 10 ); palpal tarsal organ exposed ( Fig. 9 ). Legs without spines and curved hairs, few vertical hairs; retrolateral trichobothrium of tibia 1 at 57%, prolateral trichobothrium present on all legs; tarsus 1 with about 8 very indistinct pseudosegments. Male gonopore without epiandrous spigots ( Fig. 14 ). Variation. Tibia 1 in other males from Egypt : 1.57, 1.60; from Uzbekistan : 1.67. Female. In general similar to male, clypeus unmodified ( Fig. 13 ). Tibia 1: 1.23, 1.50 (Cairo), 1.67 (El Saff). Epigynum large relative to abdomen, with distinctive pair of pockets and internal structures visible through cuticle ( Figs. 5, 6 , 15, 16 ).