Veterinary Entomology and Acarology deals with the arthropods affecting livestock and poultry. Arthropods are included in the largest phylum, arthropoda of the animal kingdom. They produce harmful effects through their direct pestilence (blood sucking, painful bites, irritation, annoyance, gadding, maggot wound etc.) as well as being vector of disease pathogens (helminthes, protozoa, rickettsia, bacteria and viruses). For their effective control a definitive diagnosis is required for which their identification is essential.

The intent of this manual is to provide an aid in the diagnosis of important arthropods of veterinary and medical importance to the students, teachers and field veterinarians. This manual contains not only the arthropod parasites included in the course contents devised by Veterinary Council of India but also others, which have their importance in veterinary medicine.