Olgania troglodytes Rix & Harvey 2010

Description. Holotype male: Total length 0.94. Carapace 0.42 long, 0.41 wide. Abdomen 0.63 long, 0.47 wide. Leg I femur 0.76. Cephalothorax, abdominal sclerites tan-yellow; legs pale tan-yellow; abdomen cream. Carapace raised anteriorly, fused to sternum via pleural sclerites; dorsal surface of pars cephalica strongly convex in lateral view; carapace and sternum heavily punctate. Eyes absent, except for single, barely-visible vestigial eye spot on each side of pars cephalica. Chelicerae without bulging anterior projections; promargin without peg teeth. Legs relatively long (leg I femur-carapace ratio 1.81); macrosetae absent. Abdomen subtriangular-globose, covered with hair-like setae, each seta projecting from small sclerotic spot; dorsal scute and lateral sclerotic strips absent. Pedipalpal patella with retrolaterally-directed, hooked lRPA, strongly recurved distal apophysis and additional, flange-like distal process; tibia without thorn-like macrosetae; tegulum smooth, with curved, marginal ETR; embolus long (length > 5× width), looping around prolateral margin of bulb (Fig. 185).
Allotype female: Total length 0.96. Carapace 0.46 long, 0.42 wide. Abdomen 0.67 long, 0.54 wide. Leg I femur 0.78. Cephalothorax, abdominal sclerites tan-yellow; legs pale tan-yellow; abdomen cream. Carapace raised anteriorly, fused to sternum via pleural sclerites; dorsal surface of pars cephalica strongly convex in lateral view; carapace and sternum heavily punctate. Eyes absent, except for single, barely-visible vestigial eye spot on each side of pars cephalica. Chelicerae without bulging anterior projections; promargin without peg teeth. Legs relatively long (leg I femur-carapace ratio 1.70); macrosetae absent. Abdomen subtriangular, covered with hair-like setae, each seta projecting from small sclerotic spot; dorsal scute and lateral sclerotic strips absent. Pedipalp entire, five-segmented. Epigyne with distinctive external morphology (Fig. 184D); receptacula globular, with coiled internal ducts; insemination ducts looped; fertilisation ducts simple, curved (Fig. 178C).

Distribution. Known only from caves in the Ida Bay karst of southern Tasmania, including Arthurs Folly, Bradley-Chesterman Cave, Dismal Hill Pot, Little Grunt, Loons Cave, March Fly Pot, Pseudocheirus Cave, Revelation Cave, Straw Cave and Thun Junction (Fig. 213).