Bioacoustics of Agyneta decorata

Description: Male : Total length 1.45; carapace length 0.67, width 0.51. CEPHALOTHORAX: Carapace light yellow, shiny, finely reticulate; radiating lines, margin suffused with gray; trident mark present. Sternum yellow, lightly suffused with gray. Clypeus height 1. Chelicerae yellow with transverse dark band, not excavated; seta-tipped tubercles absent; promargin five teeth, retromargin three denticles. Cheliceral stridulatory organ ~18 striae, well spaced throughout. ABDOMEN: Patterned, off-white with two broken, transverse dark gray bands ( Fig. 566 ). LEGS: Yellow; leg I total length: 3.57; leg III total length: 1.79; Tm I: 0.34, Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis rounded, smooth; dorsal tibial apophysis absent; two retrolateral trichobothria and one dorsal ( Fig. 562 ). Cymbium pointed; glabrous depression absent ( Fig. 562 ); dorsal cymbial tubercle rounded, rugose; ventral tubercle absent; prolateral notch shallow ( Fig. 563 ). Paracymbium apical pocket absent, anterior pocket long, reaching posterior pocket ( Fig. 562 ). Embolus tip rounded, broad; Fickert’s gland absent; ventral lamella reduced or absent; thumb long, extending beyond the embolus proper ( Fig. 564 ). Embolus proper set apically, not associated with the embolus tip, ventral and dorsal part about equal ( Fig. 564 ). Anterior terminal apophysis narrow, with no protrusions; posterior terminal apophysis absent; lamella characteristica highly complex ( Fig. 565 ). Female : Total length 1.47; carapace length 0.64, width 0.56. CEPHALOTHORAX: Coloration as in male. Chelicerae yellow with dark transverse band; promargin four teeth, retromargin five denticles. Cheliceral stridulatory organ ~17 striae, well spaced throughout. ABDOMEN: Patterned, off-white with two broken, wide transverse dark gray bands ( Fig. 567 ). LEGS: Coloration as in male; palpal segments dark, claw absent; leg I missing; leg III total length: 1.92; Tm IV: absent. GENITALIA: Epigynum with wide proximal part of scape; lateral lobes elongated; stretcher very long; pit deep ( Fig. 568 ). Median part of scape short and narrow; genital pores situated at base of lateral lobes pockets ( Fig. 569 ). Internal genitalia with elongated ventral receptacula and a triangular dorsal one ( Figs 568, 569 ). MAP. 38. Localities of Agyneta decorata ( Chamberlin & Ivie 1944 ) .