Berry crops in Mexico are affected by various pests, including aphids, that cause direct and indirect damage. Blackberry aphid, Aphis ruborum (Börner & Schilder) affects different berry species, among them strawberry (Fragaria spp.), raspberry (Rubus idaeus), and blackberry (R. fruticosus). Because of global importance, aphids were monitored, identified, and their geographical distribution and host range determined in crops of three berry species at sites in the Mexican states of Baja California, Jalisco, Michoacán, Puebla, and Tlaxcala. Based on samples analyzed, viviparous forms of A. ruborum (nymphs and wingless and winged adults) were recorded in blackberry (R. fruticosus) crops in seven counties of the State of Michoacán and two in Jalisco. Also recorded at three localities was the parasitoid Aphidius colemani. This is the first study on the geographical distribution of A. ruborum in Mexico. The information identifies its presence on R. fruticosus, with restricted distribution thus far. This supports use of systematic entomological surveillance and subsequent integrated management strategies in berry production areas of Mexico.