Bioacoustics of Agyneta pistrix

Description: Male : Total length 1.89; carapace length 0.83, width 0.63. CEPHALOTHORAX: Carapace orange-brown, shiny, finely reticulate; margin, radiating lines and pars cephalica lightly suffused with dark gray; trident mark present. Sternum orange-brown lightly suffused with dark gray. Clypeus height 3. Chelicerae orange-brown, excavated; ~ 18 seta-tipped tubercles; promargin three teeth, retromargin two tiny denticles and projection at base of the fang. Cheliceral stridulatory ~ 31 striae, well spaced closer basally. ABDOMEN: Uniformly medium gray. LEGS: Yellow-orange, femur darker orange; leg I total length: 3.06; leg III total length: 2.78; Tm I: 0.25, Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis well sclerotized with small pointed tip; dorsal tibial apophysis with rounded tip, smooth, not strongly sclerotized; two retrolateral and one dorsal trichobothria ( Fig. 250 ). Cymbium triangular; glabrous depression present ( Fig. 250 ); dorsal cymbial tubercle anvil-shaped; ventral cymbial turbercle elongated with rounded rugose tip; prolateral notch deep ( Fig. 251 ). Paracymbium apically constricted, apical pocket long, anterior pocket short, deep and curved making a small cover, posterior pocket absent ( Fig. 250 ). Embolus tip pointed with acute prong apically; ventro-retrolaterally with rows of spines; basally excavated with flange; Fickert’s gland elongated, set basally; ventral lamella transparent, pointed; thumb elongated, reaching beyond the embolus proper, with sclerotized tip ( Fig. 252 ). Embolus proper set basally ( Fig. 252 ). Anterior terminal apophysis long and narrow with very long protrusions; posterior terminal apophysis small, with rounded tip and a large curved basal prong; lamella characteristica wide with pointed transparent process ( Fig. 253 ). Female : Unknown.