Information within and illustrated on maps, is according to the PGR agency, ( the premier investigative arm of the Attorney General of Mexico). Readers may identify discernible omissions of both cartels and subgroups, or disagree with given information, nonetheless, this is what Vanguardia is reporting.
They identify subgroups working for larger cartels, and the area of influence.
Groups who began as operational subgroups, or enforcer groups for a large cartels, sometimes become consolidated and splinter into an independent group.
Such is the case of the Independent Cartel of Acapulco (CIDA), Los Rojos and Los Ardillos, which splintered from the Beltran Leyva Organization.
Guerreros Unidos splintered from La Familia Michoacana. Cártel del Poniente/La Laguna, separated from cártel del Pacífico.