Citrus leprosis virus C, which causes the citrus leprosis disease, is considered one of the most destructive pathogens of citrus in South and Central American countries and its rapid movement into Mexico makes detection of CiLV-C critical to exclusion, containment and eradication efforts. The development of specific monoclonal antibodies (MAbs) was needed for sensitive, specific and accurate detection of CiLV-C. In recent years the use of expressed coat protein as an immunogen to produce specific antibodies is a fast and appropriate approach for labile and difficult to purify plant viruses. Previously, we used the expressed coat protein of CiLV-C to develop the high titer, specific polyclonal antibody CREC13 in rabbits, but as stated earlier a PAb is limited in supply and when remade the specificity and sensitivity of PAbs often varies. This study produced and evaluated MAbs to the expressed coat protein of CiLV-C thus providing an inexhaustible and uniform supply of reagents for use in any of three diagnostic methods described. This is the first report of the generation of MAbs against the expressed coat protein of CiLV-C. Since the MAbs in this study were used for capturing the virus, a critical step in the methods, variations in the sensitivity and specificity encountered from newly produced PAbs used as detecting antibodies will likely be tolerated with minimal impact on the serological assays.