Aphidoidea forms one of the most important group of phytophagous insects because of their polymorphism, host alternating heteteroecious behaviour, reproductive habits and above all for their role as largest group of insect vectors of plant viruses. The Fauna of lndia and the adjacent countries in this group constitutes about 16% of the world fauna, including a large number of rare, endemic species. However, no consolidated account of Indian aphids was so far available and the present work was started in 1976 and has been so planned as to be published in several parts. The first part published in 1980 deals with an introductory chapter on Aphidoidea leading to the subfamily Chaitophorinae. The second volume deals with subfamily Lachninae and the present volume, third in the sseries deals with the subfamily Pemphiginae. The entire superfamily is expected to be covered in at least eight separate parts. Besides taxonomic accounts, the volumes will also provide information on host plant association, association with ants, natural enemies of aphids, distribution etc.