The sampled colonies belong to different producers and were located in 15 municipalities in three ecological regions of Zacatecas, Mexico 22°57'N, 102°42'W. Each sample consisted of approximately 40 worker bees that were stored in 90% ethanol.
Las colonias pertenecían a diferentes productores y se localizaban en 15 municipios de tres regiones ecológicas de Zacatecas, México 22°57' N, 102°42' O. Cada porción seleccionada contenía unas 40 abejas obreras que se conservaron en etanol al 90%.