TYPES: Male holotype and male paratype from Pisonia litter taken on a southern slope with dry substrate at an elevation of 380 m on Isla Pinta, Galapagos Islands (Jan. 20, 1977; W. Reeder), deposited in TMM (57873, PBI_ OON 36961).
DIAGNOSIS: Males can easily be recognized by having all the terminal palpal elements fused into a single structure (figs. 556–559), females by the hourglass-shaped anterior genitalic process (figs. 546, 547).
MALE (PBI_ OON 36961, figs. 543, 548–559): Total length 1.18. Surface of elevated portion of pars cephalica smooth. Eyes two; ALE touching. Sternum with anterior channels, surface smooth, without pits, microsculpture absent; setae densest laterally. Labium anterior margin deeply incised. Endite tip with narrow, laterally directed lobe. Palpal apophysis, conductor, and embolus apparently fused into single structure, process on embolus still visible; cymbium completely fused with bulb, no seam visible.
FEMALE (PBI_ OON 36959, figs. 544–547): Total length 1.69. Labium anterior margin indented at middle. Anterior genitalic process short, hourglass shaped.
OTHER MATERIAL EXAMINED: GALAPAGOS ISLANDS: Isla Pinta: Jan. 19, 1977, from dry litter and mineral soil at base of Pisonia, southern slope, camp area, elev. 250 m (W. Reeder, TMM 30400, PBI_ OON 36960), 1♀, July 18, 1977, screened from damp Zanthoxylum and Salvia litter 2–4 cm above ash soil, elev. 400 m (W. Reeder, TMM 57874, PBI_ OON 36959), 2♀.
DISTRIBUTION: Galapagos Islands (Isla Pinta).