Fundamentals of Plant-Parasitic Nematode Diagnostics, Systematics and Classification presents a single, comprehensive resource for those interested in nematode biosystematics. The microscopic size, character plasticity, and habits of these animals which have long posed obstacles in their identification and derivation of relationships with others is addressed by systematic, complete presentation of current knowledge. Unlike other animal groups, the exact diversity of the nematodes is still significantly unknown and, except for some fossilized preservations in ambers, any solid paleontological proof for the nematodes is still lacking. In this critical bottleneck of having solid comprehensive data profile in hand for phylogeny estimation, scientists struggle to fully resolve the nematode evolutionary history toward developing a definitive classification. This book takes advantage of recent advances of molecular systematics and phylogenetic systems to create a single reference dataset from multiple scientific disciplines. By compiling and discussing the multiple classifications that have been proposed over time, Fundamentals of Plant-Parasitic Nematode Diagnostics, Systematics and Classification establishes a foundational reference point upon which future research can be based. Unlike other nematode taxonomies and systematics, which are focused on a specific group or classification, the book includes the core theories and principles of taxonomy, systematics and phylogeny, obtaining and managing characteristic data and diagnostic identification. This book will prove an invaluable resource for students, researchers and scientists.