Bioacoustics of Agyneta angulata

Description: Male : Total length 1.61; carapace length 0.75, width 0.58. CEPHALOTHORAX: Carapace light orange, shiny, finely reticulate; margin, radiating lines suffused with dark gray. Clypeus height 2. Sternum lightly suffused with dark gray. Chelicerae light orange, not excavated; setatipped tubercles absent; promargin four teeth, retromargin four tiny denticles. Cheliceral stridulatory organ ~ 17 striae, well spaced throughout. ABDOMEN: Uniformly light gray LEGS: Yellow; total length leg I: 2.74, total length leg III: 2.10; Tm I: 0.21, Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis somewhat transparent, pointed and smooth; dorsal tibial apophysis absent; two retrolateral, one dorsal trichobothria ( Fig. 492 ). Cymbium triangular; glabrous depression present ( Fig. 492 ); dorsal cymbial turbercle elongated, rounded and smooth; ventral cymbial tubercle absent; prolateral notch shallow ( Fig. 493 ). Paracymbium apical pocket medium, anterior pocket long and curved, posterior pocket long reaching the anterior one ( Fig. 492 ). Embolus tip pointed and thin with retrolateral extension; basally with one sharp spikes and small spines; ventrally with small spines; Fickert’s gland globulous situated medially; ventral lamella reduced; thumb long, reaching tip of the embolus proper ( Fig. 494 ). Embolus proper set apically, on a vertical ridge associated with embolus tip, of equal part and with associated small prong ( Fig. 494 ). Anterior terminal apophysis pointed with numerous long, fine protrusions; posterior terminal apophysis small; lamella characteristica extremely long, spinose tip and a transparent short extension sub-apically ( Fig. 495 ). Female : Total length 1.71; carapace length 0.70, width 0.54. CEPHALOTHORAX: Coloration as in male. Chelicerae promargin five teeth, retromargin five denticles. Cheliceral stridulatory organ ~ 18 striae, well spaced throughout. ABDOMEN: Uniformly light gray. LEGS: Coloration as male; palpal tarsal claw absent; total length leg I: 2.70, total length leg III: 2.23; Tm I: 0.22, Tm IV: absent. GENITALIA: Epigynum with narrow proximal part of scape, triangular apically; epigynal slits large, not quite reaching the anterior part of the epigynum; pit hook depression absent ( Fig 496 ); lateral lobes wide and short; stretcher seemingly absent; pit small ( Fig. 498 ). Median part of scape narrow, short; genital pores situated at base of lateral lobes pockets ( Fig. 499 ). Internal genitalia with an oval, ventral receptacula, horizontally positioned and a small dorsal one ( Figs 498, 499 )