Common name:
Galapagos racer snake
Scientific name:
Pseudalsophis spp
Spanish name:
Culebra de Galápagos
Conservation status:
Near Threatened
Average size:
80 centimetres - 1 metre
Maximum size:
1.25 metres
Racer snakes on Galapagos are constrictors and only mildly venomous. They are known to prey on lava lizards, geckos, insects, iguanas, mice, rats and hatchlings of several bird species. They are not at all aggressive towards humans and could not do much harm if they were to attack after being threatened. Racers tend to be dark brown with stripes or spots.Â
There is some confusion over the number of species of racer snake found in Galapagos due to poor research. The latest research suggests that there are: the Galapagos racer (Pseudalsophis biserialis) from San Cristobal and Floreana – though it is locally extinct on Floreana and now only found on nearby islets; the Española racer (Pseudalsophis hoodensis) from Española and adjacent islets; Santa Cruz racer (Pseudalsophis dorsalis) from Santa Cruz, Baltra, Santa Fe and adjacent islets; Fernandina racer (Pseudalsophis occidentalis) from Fernandina, Isabela, and Tortuga; banded racer (Pseudalsophis slevini) from Pinzon; and the striped racer (Pseudalsophis steindachneri) from Baltra and Santa Cruz.
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"12 species are locally extinct on the island, including the Floreana mockingbird and Floreana racer snake."
Once home to some of the most iconic wildlife in Galapagos, Floreana has been devastated by invasive species. We are supporting a hugely ambitious project to restore the island to its former glory.
