Genus Aranea is a scientific classification for spiders but it can also refer to a variety of synonyms such as spider genus, arachnid type, and tarantula family. The word aranea in Latin means spider. There are approximately 45,000 species of spiders worldwide, and they belong to the Arachnida class. Some well-known species of spiders that belong to the Genus Aranea include the black widow and the brown recluse. Understanding the many synonyms for the Genus Aranea and other scientific classifications can help those interested in the study of spiders better understand their taxonomy and evolution.