Osteocephalus mutabor:

ECUADOR: Napo: South slope of Volcán Sumaco on Río Pucuno, 1000 m, between Guamaní and Guagua Sumaco (0° 42' 24'' S; 77° 35' 54'' W): EPN H- 6658 (holotype), EPN H- 6659 (paratype). Comuna Veinticuatro de Mayo: EPN H- 5695-9 (paratypes). Río Chaloyacu on Carretera Narupa – Coca: ZFMK 66237 (paratype). San Pablo de Kantesiya: MHNG 2260.4-6, 2260.97, 2366.43, 2366.45, 2366.48, 2366.53, 2366.61-63, 2366.67, 2373.84, 2373.86-87, 2556.57 (paratypes). Pastaza: Canelos, 530 m: KU 120915. Locación Petrolera Garza 1, NE Montalvo, 300 m: KU 217747-9. Vicinity of Arutam Biological Field Station: SMF 79721-2 (paratypes). Sucumbíos: Cascales: EPN-H5716-9 (paratypes). Limoncocha, 200 m: KU 99210-6. Santa Cecilia, 340 m: KU 105210-20, 109509-11, 111971, 122964 -87, 123169, 150494 -5, 152277.

PERU: Loreto: San Jacinto, 175-190 m: KU 221928. 1.5 km N Teniente Lopez, 310-340 m: KU 221929-32.