Bioacoustics of Nanometa tasmaniensis

DESCRIPTION: Female (TEAU001, TEAU027, TEAU039) total length 8.1. Cephalothorax length 3.5, width 2.6. Clypeus height 1.6 AME diameter. Cephalothorax background yellow, dark-brown pattern reticulated (fig. 21A). Eyes subequal in size, lateral smaller (fig. 21G). Sternum color dark brown (fig. 21E). Chelicera promargin and retromargin with three and two teeth respectively, ca. five cheliceral denticles. Abdomen roughly spherical, dorsum background gray, guanine patches concentrated in the anterior surface and fewer than in other species, dark-brown spots sparsely distributed (fig. 21A). Lateral line of guanine patches C-shaped and intercalated with dark-brown reticulated spots (fig. 21C). Venter without the central dark longitudinal rectangle (fig. 21E). Tracheae observed with SEM, median tracheae main body leaf shaped, tips slightly ramified; lateral tracheae tube shaped. ALS with one major ampullate, one nubbin, ca. 70 piriform, tartipores present. PMS one minor ampullate, one nubbin, and one cylindrical and three central aciniform. PLS araneoid tripled spigots separated, ca. 14 aciniform spigots distributed in two parallel rows, two cylindrical gland spigots at the periphery. Femur I length 4.4. Copulatory ducts modified as membranous sacs with smooth cuticle, spermathecae round and more sclerotized than “copulatory sacs,” accessory duct glands clustered on puDzallshaped clusters (figs. 21F, 23C, 25E). Male (TEAU002, TEAU007, TEAU027) same as female except as noted. Total length 5.6. Cephalothorax length 2.6, width 2.2. Clypeus 1.6 AME diameter (figs. 21I). Cephalothorax and abdomen coloration lighter than in female, abdomen cylindrical. Cheliceral promargin and retromargin with three and two teeth respectively, denticles ca. two. Stridulatory organ formed by a cuticular sclerotized ridge on booklung plate anterior edge and half its diameter, coxa IV retrolateral surface cuticle covered with scales. Femur I length 5.7. Conductor tip with two apophyses, basal apophysis curved, slender, and almost the same length of the distal apophysis, distal apophysis long and heavily sclerotized (figs. 22A, 23GH, 25A–C). Right pedipalp expanded: basal hematodocha largely distended and responsible for most of the movements, embolic division considerably less expansible. Conductor membranous section partially expanded. Embolus-tegulum membrane turned clockwise only (figs. 22A, 25A). VARIATION: Females ( N = 5) total length 6.2– 8.3, cephalothorax length 2.8–3.5, width 2.0–2.6. Males ( N = 6) total length 5.5–6.8, cephalothorax length 2.6–3.1, width 2.0–2.3.