Orchestina madrededios, Izquierdo new species Figures 106E, 110C, map 21 TYPE: Female holotype from Peru: Madre de Dios: Provincia Manu: Cuenca del Rio Los Amigos; CICRA, -12.53483°, -70.11189°, Aug. 29, 2005, M. Deza, on label “UA-785,” deposited in MEKRB, PBI_OON 42744; same data, Feb. 23, 2006, M. Deza leg. 1 female paratype, on label “UA-346,” deposited in MEKRB, PBI_OON 14982. ETYMOLOGY: The specific name is a noun in apposition taken from the type locality. DIAGNOSIS: Females are unique in having two sclerotized ridges on the epigastric region (fig. 110C) and two small adjacent external pockets. MALE: Unknown. FEMALE (PBI_OON 42744): Total length 1.62. Habitus as in figure 106E. CEPHALO- THORAX: Carapace orange. Labium rectangular. LEGS: Patella plus tibia I longer than carapace. Left legs I, II absent. ABDOMEN: Pale white. GENITALIA: Epigastric region with two sclerotized ridges (fig. 110C), two small, adjacent external pockets, internal pockets absent. DISTRIBUTION: Known only from the type locality in Peru (Madre de Dios, map 21). OTHER MATERIAL EXAMINED: None.