The "Illustrated Monograph of Scale Insects" is a comprehensive technical book that focuses on the taxonomy and phylogeny of scale insects, particularly the family Margarodidae. It provides a detailed analysis of the characteristic features and character states used to diagnose the species within the 30 Porphyrophora species and 10 related taxa. The book is divided into ten chapters and six appendices and includes numerous tables as well as 52 lifelike illustrations that vividly support the content. Additionally, phylogenetic analyses are presented, supplemented by two cladograms. The geographical distribution and host plants associated with each species of Porphyrophora and other hypogean Margarodidae are also addressed. This book serves as a valuable reference for anyone interested in the fauna of Margarodidae, their phylogeny, and the protection of cultivated host plants from harmful Margarodidae.