Transancistrus aequinoctiale:

MEPN-8805, 3 ex., 79.1–84.1 mm SL, Ecuador, Imbabura Province, Aguas Claras, Altos del Río Guayllabamba, approx. 00°14’05”N 78°48’50”W, M. Olalla, Sep. 1961 . MEPN-18600, 3 ex., 83.4–112.7 mm SL, Ecuador, Pichincha Province, Río Pachijal afluente del Guayllabamba, approx. 00°01’10”N 78°47’12”W, M. Olalla, August 1969 .