Abstract
Asian citrus psyllid, Diaphorina citri Kuwayama, is vector of the bacterial pathogens causing huanglongbing. It occurs as three distinct color morphs in nature. Our results indicate that decreasing insecticide susceptibility among D. citri populations caused by over‐spraying is associated with increasing levels of detoxifying enzyme groups. Furthermore, orange/yellow morphs of this insect are more susceptible than blue/green and gray/brown color morphs suggesting that cuticular melanization may be a mechanism associated with development of resistance in this insect (see pages 843–852). Photo provided Tonya R. Weeks.
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