Myzus nicotiana

Most Nicotiana species have multicellular, glanded leaf trichomes which may produce chemical secretions containing diterpenes and/or sugar esters with C2 to C,o acyl moieties. These components affect tobacco aphids, Myzus nicotianae Blackman, in several ways, including influencing the acceptance or rejection of plants for colonization by alate migrant aphids, and the survival and fecundity of alate and apterous aphids. Cuticular diterpenes and sucrose esters were isolated from the cuticular extracts of aphid resistant and susceptible N. tabacum genotypes. These compounds were applied topically to the backs of apterous aphids. 

Recently, a change from a green to a red morph has occurred in the tobacco aphid, Myzus nicotianae Blackman. Although, the red morph of the tobacco aphid is often associated with an increase in insecticide resistance, this color change has not been directly linked to use of insecticides. However, since the red aphid develops faster, has a higher reproduction rate and tolerates higher temperatures, it is more difficult to control than the green form (5). 

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