1. Pedipalp femur, dorsal surface with two macrosetae (M1, M2) associated with d and e trichobothria (fig. 2C)…...................................................................................... U. transandinus

– Pedipalp femur, dorsal surface with one macroseta (M1) associated with d and e trichobothria (fig. 2A, B, D, E)……................………..…………………………….....................…….2

2. Metasoma, ventral surface with paired VL and single VM stripes on all segments, or at least on segments II–IV (fig. 3A)…………………….............................................………….3

– Metasoma, ventral surface with paired VL and VSM stripes on all segments, or at least on segments II–IV (fig. 3B)….………………..................................……………………...……..5

3. Pedipalp femur, dorsal surface with trichobothrium e situated proximal to macroseta M1 (fig. 2A); hemispermatophore, basal lobe with well-developed internal laminar extension, with internal notch (fig. 5A)…................................................................................ U. granulatus

– Pedipalp femur, dorsal surface with trichobothrium e situated in same axis as, or distal to macroseta M1 (fig. 2D); hemispermatophore, basal lobe without internal laminar extension, forming concave surface without internal notch (fig. 5C, E) ……..........…..................4

4. Color yellowish with dark brown spots; carapace, anterior half weakly pigmented, with small dark spot medially on anterior margin (fig. 4B); metasomal segments IV and V each with VL and VM pigmentation stripes not contiguous at posterior margins of segments; hemispermatophore, lobe region weakly developed, basal lobe forming slightly concave surface (fig. 5C) ………………………………........……....………….… U. tregualemuensis

– Color dark brown with black spots; carapace, anterior half densely pigmented, with welldeveloped dark spot occupying almost entire anterior margin (fig. 4A); metasomal segments IV and V each with VL and VM pigmentation stripes contiguous at posterior margins of segments; hemispermatophore lobe region well developed, basal lobe deeply excavated (fig. 5E) …………........................................................................................ U. pizarroi

5. Hemispermatopore with well-developed lobe region (fig. 6C), posterior margin of basal lobe situated distal to posterior margin of capsular concavity; metasomal segments I and II, VSM carinae forming two transverse carinae near anterior margin of segment and in posterior third (fig. 10A, B)…..……..…………………………..…………….... U. tumbensis

– Hemispermatopore with weakly developed lobe region (fig. 6A), posterior margin of basal lobe situated proximal to posterior margin of capsular concavity; metasomal segments I and II, VSM carinae diverging in anterior third of segment (fig. 7A, B)…………………… ………...……............................................................................….. U. mondacai, n. sp.