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Asian citrus psyllid, Diaphorina citri Kuwayama, is the vector of "Huanglongbing" disease. Different insecticides are used to control the vector by a government containment program to prevent dissemination of disease in citrus growing areas in Mexico. Increased selection pressure on field populations can result in resistance to insecticides. The goal of this study was to determine susceptibility baselines in a laboratory strain of Asian citrus psyllid susceptible to 11 insecticides from five toxicological groups and determine diagnostic doses to test in eight populations from Tahiti lime, Citrus latifolia Tan., and Mexican lime, Citrus aurantifolia Swingle, orchards with different patterns of insecticide use. Resistance ratios were calculated in comparison with data from a susceptible strain in a laboratory in Florida. Most calculated LD50 and LD95 values corresponded well with mortalities caused by diagnostic doses. Asian citrus psyllids from Apatzingan, Michoacan were very resistant to imidacloprid, 4265.6-fold; dimethoate, 106.5-fold; chlorpyriphos, 26.5-fold; and slightly to thiamethoxam, 13.8-fold. At Cofradia de Morelos, Colima, resistance to imidacloprid was 25.6-fold. Resistance to imidacloprid (17.5-fold) and thiamethoxam (12.0-fold) was detected at Cerro de Ortega, Colima. Similar resistance was observed at Tepic, Nayarit, to imidacloprid (13.8-fold) and thiamethoxam (19.3-fold). Psyllids at Casimiro Castillo, Jalisco were resistant to chlorpyriphos (20.6-fold). At El Limon, Jalisco, resistance was found only to thiamethoxam (14.2-fold). Results are similar to those found by Tiwari et al. (2011, 2013) in Florida; however, resistance to neonicotinoids and organophosphates was greater in Asian citrus psyllids in Mexico than those in Florida. [ABSTRACT FROM AUTHOR]