Arachnologists are scientific zoologists responsible for the study of Arachnids and related animals, such as Scorpions, pseudoscorpions and harvesters. Have the primary responsibility of their classification 40, taxonomy and Systematics ) studying their anatomy and Physiology, including the venom of spiders and scorpions, how they are distributed in different regions and habitats, its interaction with its environment ( as the impact on agricultural ecosystems ) and if they can be used as biological control agents.