New alien aphid discovered in South Africa: the woolly hackberry aphid Shivaphis celti Das (Hemiptera: Aphididae).

The article discusses the discovery of new alien aphid in South Africa called the woolly hackberry aphid Shivaphis celti Das (Hemiptera: Aphididae). Topics include the presence of the alien aphid on Celtis sinensis Pers (Chinese hackberry) and in C. africana Burm.f. (white stinkwood), the characteristics of the species, and the growth of introduced insect species and their possible implications.