Aphis cytisorum

The aphid Macrosiphon albifrons is attracted to Lupinus species with a characteristic alkaloid pattern. Individuals that had low alkaloid content were not attacked, nor were plants with different quinolizidine alkaloid composition. This aphid excretes a portion of the alkaloids in the honeydew and retains a portion in its body (Wink and Romer, 1986). Another aphid, Aphis cytisorum, which infests broom plants (Cytisus scoparius), accumulates up to 0.5 mg alkaloid per gram fresh weight. The alkaloids are similar in composition to those of the host plant, 17-oxosparteine (25), sparteine (17), 12,13-dehydrosparteine, and lupanine (21) (Wink et al., 1982). 

Wink, M., T. Hartmann, L. Witte, and J. Rheinheimer, Interrelationship between quinolizidine alkaloid producing legumes and infesting insects Exploitation of the alkaloid-containing phloem sap of Cytissus scoparius by the broom aphid Aphis cytisorum, Z. Naturforsch., 37c, 1081-1086 (1982). 

Besides avoiding, some insects can tolerate the defense chenustry of their host. The potato beetle Leptinotarsa decemlineata) lives on Solanum species containing steroidal alkaloids, which are tolerated but not stored by this species. The bruchid beetle, Bruchidius villosus, predates seeds of QA rich plants, such as Laburnum anagyroides. This beetle eliminates most of the dietary cystisine with the faces. Certain aphids can store the dietary alkaloids, for example, QA in Aphis cytisorum, A. genistae, and Macrosiphum albifrons and PA in Aphis jacobaeae and A. cacaliaster [70]. 

Callosobruchus maculatus Locusta migatoria Choristoneura fumiferana Aphis cytisorum Danaus sp Spodoptera littoralis Callosobruchus maculatus... 

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