Lycosa erythrognatha, commonly known as the red-jawed wolf spider, is a species of spider belonging to the family Lycosidae. It is characterized by its distinctive red-colored jaws, which are used for capturing and immobilizing prey. This species is found in various habitats worldwide, including grasslands, forests, and deserts. Red-jawed wolf spiders are known for their excellent hunting skills and are considered beneficial to ecosystems as they help control populations of insects and other small invertebrates.