Bioacoustics of Agyneta spicula

Description: Male : Total length 1.87; carapace length 0.85, width 0.69. CEPHALOTHORAX: Carapace orange-brown, shiny, finely reticulate; suffused with gray along radiating lines, pars cephalica and margin. Sternum suffused with gray. Clypeus height 3. Chelicerae apical half yellow, basal half suffused with dark gray; not excavated; seta-tipped tubercles absent; promargin six denticles, retromargin three tiny denticles. Cheliceral stridulatory organ ~26 striae, widely spaced, slowly getting closer basally. ABDOMEN: Dark gray with off-white chevrons with or without hour glass apical mark ( Fig. 320 ). LEGS: Light yellow-orange; leg I total length: 3.71; leg III total length: 2.55; Tm I: 0.25, Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis long, pointed and smooth; dorsal tibial apophysis curved with one pointed spur; two retrolateral trichobothria and one dorsal ( Fig. 316 ). Cymbium triangular; glabrous depression present ( Fig 316 ); dorsal and ventral cymbial tubercles rugose; prolateral notch shallow ( Fig. 317 ). Paracymbium apical pocket medium, anterior pocket long, posterior pocket absent ( Fig. 316 ). Embolus tip narrow, pointed with long prong; basally with row of small spines; numerous spines ventrally; Fickert’s gland absent; ventral lamella reduced or absent; thumb reaching the embolus proper ( Fig. 318 ). Embolus proper set apically on a vertical ridge, of equal part ( Fig. 318 ). Anterior terminal apophysis narrow with short protrusions; posterior terminal apophysis small, with pointed tip; lamella characteristica large with numerous spines apically ( Fig. 319 ). Female : Total length 2.39; carapace length 0.93, width 0.69. CEPHALOTHORAX: Coloration as in male. Chelicerae posterior half yellow, anterior half suffused with dark gray; promargin five denticles; retromargin three tiny denticles. Cheliceral stridulatory organ easily visible ~10 striae, well spaced. ABDOMEN: Dark gray with off-white chevrons with or without hour glass apical mark ( Fig. 321 ). LEGS: Same coloration as male; palpal tarsal claw absent, palpal segment suffused with dark gray; leg I total length: 3.90; leg III total length: 2.71; Tm I: 0.27, Tm IV: absent. GENITALIA: Epigynum with circular depression ( Fig. 322 arrow), narrow proximal part of scape, enlarging into an oval plate; epigynal slits narrow and curved; pit hook depression indistiguishable ( Fig. 322 ); lateral lobes extremely elongated with basal constriction; stretcher long; pit small ( Figs 323, 325 ). Median part of scape narrow, wrinkled; genital pores situated at base of lateral lobes pockets ( Fig. 324 ). Internal genitalia with oval, ventral receptacula with triangular base ( Figs 323, 324 ).