Arachnology
Arachnology (from Ancient Greek ἀράχνη (arákhnē), meaning "spider", and λόγος (lógos), meaning "study") is the scientific study of arachnids, which comprise spiders and related invertebrates such as scorpions, pseudoscorpions, harvestmen, ticks, and mites. Those who study spiders and other arachnids are arachnologists.