Bioacoustics of Agyneta protrudens

Description: Male : Total length: 1.62; carapace length: 0.72; carapace width: 0.57. MAP. 4. Localities of Agyneta protrudens ( Chamberlin & Ivie 1933 ) . CEPHALOTHORAX: Carapace light orange-brown, shiny, finely reticulate; suffused with dark gray along margin, radiating lines; trident mark present. Sternum dark brown strongly suffused with dark gray. Clypeus height 3, protruding. Chelicerae yellow, with transverse gray band excavated ( Fig. 25 ); seta-tipped tubercles absent; promargin 0 teeth, retromargin 0 denticle, both margins without projections near base of fang. Cheliceral stridulatory organ ~50 striae, well spaced slowly getting closer basally. ABDOMEN: Uniformly light to dark gray. LEGS: Yellow-orange; leg I total length: 2.13; leg III total length: 1.66; Tm I: 0.74, Tm IV: present. GENITALIA: Palpal retrolateral tibial apophysis triangular, smooth; dorsal tibial apophysis pointed, rugose; one retrolateral and one dorsal trichobothria ( Fig. 97 ). Cymbium triangular; glabrous depression present ( Fig. 97 ); cymbial tubercles absent; prolateral notch medium ( Fig. 98 ). Paracymbium apical pocket medium, anterior pocket straight, posterior pocket short and curved ( Fig. 97 ). Embolus tip pointed, slightly concave, one small sub-apical spine; basal flange serrated; Fickert’s gland absent; ventral lamella short with well sclerotized, serrated tip; thumb reaching below the embolus proper ( Fig. 99 ). Embolus proper set apically, ventral and dorsal part of equal size ( Fig. 99 ). Anterior terminal apophysis narrow, pointed tip with few, long protrusions and small spine at midpoint; posterior terminal apophysis striate, curved with one pointed tip; lamella characteristica tip wide with four small spikes and ending in a large prong ( Fig. 100 ). Female : Total length 1.67; carapace length 0.68, width 0.49. CEPHALOTHORAX: Same coloration as male. Chelicerae yellow, not excavated; fangs as in male; promargin 0 teeth, retromargin 0 denticle. Cheliceral stridulatory organ ~40 striae, narrowly spaced throughout. ABDOMEN: Same as male. LEGS: Same as male; palpal tarsus not inflated, tarsal claw absent; leg I total length: 1.80; leg III total length: 1.49; Tm I: 0.64, Tm IV: present. GENITALIA: Epigynum with wide proximal part of scape, sides straight, oblique; epigynal slits oval; pit hook depression absent ( Fig. 101 ); lateral lobes short and wide; stretcher seemingly absent; pit small ( Fig. 102 ). Median part of scape short and wide; genital pores situated at base of lateral lobes pockets ( Fig. 103 ). Internal genitalia with a small oval receptacula, obliquely positioned ( Fig. 102 ).