The entomologist's dictionary contains alphabetically arranged articles that provide brief background information on the main species of insects and ticks that damage crops and forest plantations. With regard to harmful species, various methods of combating them are characterized, an idea is given of ​ ​ poisons used in pest control, machines and apparatus used to protect plants from damage. The directory, in addition, provides information on the history of plant protection, provides brief biographical information about figures in the field of entomology. Of the general questions in the reference book, brief information on the morphology, systematics, anatomy, biology and ecology of harmful and useful species of insects is given.