5Barnes AI,Siva--Jothy MT. Density--dependent prophylaxis in the mealworm beetle Tenebrio molitor k (Coleoptera : Tenebrionidae) : cuticular melanization is an indicator of investment in immunity .Proc.Roy. Soc.2000, 267:177-182.
6Berry RJ,willmer PG. Temperature and the color polymorphism of Philaenus spumarius (Homoptera : Aphrophoridae).Ecol.Entomol, 1986, 11:251-260.
7Brakefield PM .Industrial melanisln: do we have the answers? Ecol. Evol,1987,2:117-122.