Reductoonops yasuni, new species (figs. 1–96)

TYPES: Male holotype from leaf litter taken at an elevation of 200 m in the Estación Científica Yasuni, Río Tiputini, 0.67111°S, 76.4002°W, Orellana, Ecuador (Dec. 1, 2009; Niarchos Exped.), deposited in QCAZ (PBI_OON 892) .

DIAGNOSIS: Males can be recognized by the bipartite conductor (figs. 35–38), females by the spear-shaped tip of the anterior genitalic process (figs. 53, 54).

MALE (PBI_OON 891, figs. 1–44, 46–51): Total length 0.84. Surface of elevated portion of pars cephalica smooth. Eyes two; ALE touching. Sternum with anterior channels, surface finely striated, without pits, microsculpture absent; setae densest laterally. Labium anterior margin deeply incised. Endite tip with rounded, posteriorly directed lobe. Cymbium not fused with bulb.

FEMALE (PBI_OON 891, figs. 45, 52–96): Total length 1.13. Anterior genitalic process long, relatively wide, originating from bowl-shaped sclerite.

OTHER MATERIAL EXAMINED: ECUADOR: Orellana: Estación Científica Yasuni, Río Tiputini, 0.67111°S, 76.4002°W, Dec. 1, 2009, leaf litter, elev. 200 m ( Niarchos Exped., AMNH PBI _OON 893), 1♀ , 0.067428°S, 76.39764°W, Dec. 1–5, 2009, Berlese, litter, humid forest, elev. 295 m (M. Ramírez, Niarchos Exped., MACN PBI _OON 886–889, 891, 894–896, 49575, 49576), 13♂, 14♀; 1 km S Onkone Gare Camp, 00°39′25.7″S, 76°27′10.8″W, Reserva Etnica Waorani, Oct. 4, 1995, elev. 216 m (T. Erwin et al. USNM PBI_OON 37077), 1♂ , June 22, 1996 (same, USNM PBI_OON 37078), 1♂; Parque Nacional Yasuni, 00°40′16″S, 76°24′18″W, Dec. 1–5, 2009, pitfall, elev. 230 m (B. Baehr, Niarchos Exped., AMNH PBI _OON 890), 1♂ .

DISTRIBUTION: Ecuador (Orellana).