Lycosa erythrognatha is a species of spider from the genus Lycosa.Lucas, H. Notice sur une nouvelle espèce d'araneide appartenant au genre Lycose. Annales de la Société Entomologique de France 5: 521-526. (1836). The species was originally described in 1836. It is the only spider known to feed on Rhinella ornata.
Venom Beginning in the 1920s, the venom of this species has been erroneously reported to cause necrosis in humans, based on undocumented clinical observations; careful empirical studies revealed that none of over 500 confirmed bites from this spider resulted in a necrotic wound.Lindioneza Adriano Ribeiro, Miguel Tanús Jorge, Roberto Vaz Piesco, Sérgio de Andrade Nishioka (1990) Wolf spider bites in São Paulo, Brazil: A clinical and epidemiological study of 515 cases. Toxicon 28(6):715-717. DOI: 10.1016/0041-0101(90)90260-E
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