Bioacoustics of Hoplopholcus atik

Description . Male ( holotype ). MEASUREMENTS. Total length 4.7, carapace width 1.7. Distance PME-PME 130 µm ; diameter PME 110 µm ; distance PME-ALE 40 µm ; diameter AME 60 µm ; distance AME-AME 30 µm . Leg 1: 37.4 (10.2 + 0.8 + 10.2 + 13.5 + 2.7), tibia 2: 6.7, tibia 3: 5.2, tibia 4: 6.2; tibia 1 L/d: 57. COLOR (in ethanol). Carapace mostly ochre-yellow, ocular area and clypeus light brown; sternum ochre-yellow, medially slightly darker and margins light brown; legs ochre-yellow, without darker rings; abdomen monochromous gray, only dorso-posteriorly with indistinct darker marks; ventrally with light brown plate in front of gonopore. BODY. Habitus similar to H. labyrinthi (cf. Figs 6–7 ). Ocular area slightly elevated. Deep thoracic pit and indistinct pair of shallow furrows diverging from pit toward posterior margin. Clypeus unmodified. Sternum wider than long (1.3/0.8), unmodified. Abdomen oval, dorso-posteriorly rounded. CHELICERAE. As in Figs 364–365 , with pair of latero-distal apophyses provided with two modified coneshaped hairs each; fine stridulatory ridges barely visible in dissecting microscope. PALPS. As in Figs 356–358 ; coxa with retrolateral bulge, trochanter barely protruding ventrally, femur with retrolateral dark line and prolateral stridulatory pick; procursus ( Figs 362–363 ) with small but distinct ventral ‘knee’, with distinctive dorsal process and prolateral whitish protrusion (arrows in Figs 362, 363 ), ventral spine proximally strongly curved, without prolateral process or ridge; genital bulb ( Figs 366–369 ) with distally strongly widened (in retrolateral view) ventral sclerite; dorsal membranous process distinct ( Fig. 367 ). LEGS. Femur 1 with single row of ~25 ventral spines; with curved hairs (but most hairs missing); few vertical hairs; retrolateral trichobothrium of tibia 1 at 5%; prolateral trichobothrium present on all leg tibiae; tarsi without distinct pseudosegments but with many small platelets. Male (variation). Tibia 1 length in three other males: 10.2, 11.2, 11.5. Most males with two modified hairs on each cheliceral apophysis, one male with only one hair on each side. Largest males with some stronger hairs also on femur 2 (ventro-distally). Single male from Erzurum Province very similar to holotype but dorsal process on procursus smaller; tibia 1: 9.1. Female. In general similar to male but without spines on legs. Tibia 1 in five females (except female from Erzurum Province ): 10.0–11.4 (mean 10.5). FEMALE GENITALIA. Epigynum as in Fig. 359 , triangular to bell-shaped; internal median pouch of uterus externus, sclerotized arcs, and lateral pouches usually visible in uncleared specimens; with pair of light brown weakly bulging areas in front of epigynum and simple, very short but wide posterior plate. Internal genitalia with distinctive median ridge at dorsal sclerotized arc (arrow in Fig. 371 ), low and indistinct median pouch of uterus externus, pair of lateral pouches of uterus externus connected anteriorly to ventral arc and posteriorly with diverging sclerotized external margins ( Fig. 370 ). Single female from Erzurum Province not cleared; tibia 1: 11.7.