Bioacoustics of Agyneta fabra

Description: Male : Total length 2.64; carapace length 1.15, width 0.80. CEPHALOTHORAX: Carapace dark orange-brown, shiny, finely reticulate; lightly suffused with gray along margin and radiating lines; sometimes with the dark gray trident mark. Sternum, orange brown, suffused with gray. Clypeus height 2. Chelicerae excavated, swollen, dark orange-brown with mastidion ( Fig. 395 ); ~ 15 seta-tipped tubercles; promargin four teeth (situated in the median part), dorsal surface with large bulge, retromargin four denticles and a large projection at base of the fang. Cheliceral stridulatory organ with ~ 34 striae, evenly spaced. ABDOMEN: Uniformly gray, or pale off-white with four dark spots medially ( Fig. 394 ). LEGS: Yellow-orange; palp dark brown, almost black; leg I total length: 5.12; leg III total length: 3.41; Tm I: 0.24, Tm IV: absent. GENITALIA: Palpal tibia retrolateral tibial apophysis absent; dorsal tibial apophysis small, rugose; two retrolateral trichobothria and a dorsal one ( Fig. 390 ). Cymbium with conical extension; glabrous depression present ( Fig. 390 ); dorsal and ventral tubercles rugose, more or less of equal size; prolateral notch deep ( Fig. 391 ). Paracymbium apical pocket medium, anterior pocket long and curved, posterior pocket absent ( Fig. 390 ). Embolus tip curved; small spines basally and ventrally; Fickert’s gland elongated set basally; ventral lamella absent; thumb long going beyond the embolus proper ( Fig. 392 ). Embolus proper set apically with large prong near base ( Fig. 392 ). Anterior terminal apophysis large, well sclerotized with few protrusions; posterior terminal apophysis large, well sclerotized; lamella characteristica with heavily sclerotized tip and with numerous short spikes ( Fig. 393 ). Female : Total length 2.46; carapace length 0.972, width 0.753.