LIFE CYCLE. Aphis gossypii is an important cosmopolitan pest on Malvaceae and Cucurbitaceae plants (Carletto et al., 2009; Ebert and Cartwright, 1997).Cotton aphids present a similar life-cycle as other aphids species ().During spring and summer, the parthenogenetic population expands rapidly, resulting in a high nutrient consumption of the host plant. Common names. Aphis spiraecola and Aphis gossypii are the most abundant and diverse species in the region. Problems in the designation of type of life cycle and the evolutionary significance of the life cycle … During these migratory flights, aphids may spread viral diseases from infected volunteer plants and weeds to healthy crops. Life history parameters (±SEM) of A. gossypii at … In the north, female nymphs hatch from eggs in the spring on ... Aphis gossypii Glover (Insecta: Hemiptera: Aphididae) 2 Adult The wingless (apterous) parthenogenetic females are 1 to 2 mm in length. Winged forms migrate to other hosts in late spring. Although size can vary based on environmental conditions, adult aphids tend to be about 1/16th inch in length, are soft bodied and pear shaped. Aphis gossypii is one of the most biologically diverse and widely distributed aphid species. Life Cycle and Description The life cycle differs greatly between north and south. Major aphids found in Nepal are Green peach aphid (Myzus persicae), Cabbage aphid (Brevicoryne brassicae), mustard aphid (Lipaphis erysimi), Cowpea aphid (Aphis craccivora), Bean aphid (Aphis fabae), Cotton aphid (Aphis gossypii), Banana aphid (Pentalona nigronervosa) etc which have high occurrence. cotton plants to growth chambers for the cotton aphid life history study, 2003 26 2.2. Instar-specific and total nymphal development duration (±SEM) of .4. gossypii at six constant temperatures in the laboratory, 2003 27 2.3. Young aphids are called nymphs. The body is quite variable in color: light Life cycle: Cotton aphid, Melon aphid.. Distribution. This aphid is globally distributed, located in all but the coldest terrestrial habitats. Cotton or melon aphids, Aphis gossypii , are highly variable in size and color, varying from light yellow to dark green or almost black. Aphids have many generations a year. Common Name: Cotton aphid or melon aphid Scientific Name: Aphis gossypii Glover Order: Homoptera Description:Adult aphids are winged or wingless, soft bodied yellow to dark green aphids 1/16 inch or less in size.Winged forms have a black head and thorax and hold their wings roof-like … The life cycle of some species involves an alternation between two species of host plants, for example between an annual crop and a woody plant. ... Cotton aphids (Aphis gossypii) often infect sugarcane, papaya and peanuts with viruses. In Georgia, the aphids are nearly all females. 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