Aphids are most important group of phytophagous insects having several biological peculiarities such as prolific breeding, polyphagism, advanced degree of polymorphism, telescopic reproduction, host alternation and high potential for rapid evolutionary changes because of parthenogenesis and polyvoltinism. Some aphids are anholocyclic (parthenogenetic), while others living in colder climate are holocyclic (sexual generation alternates with parthenogenetic ones). About 20% of the described species from India are parthenogenetic virginoparous for most of the year but capable of sexual...