Dominica is considered to be the least disturbed island in the Caribbean with about 60% of its original vegetation remaining. Due to the undisturbed nature of the island and a range of habitats including elfin forest, primary rainforest, and tropical dry forest there should be a high species diversity of Auchenorrhynchan insects, however, these have been little studied. For three weeks in the summer of 2006 a wide range of areas around the island were sampled using a variety of techniques leading to 500 insects in 13 families being collected and identified to genus or species. These data were combined with material collected during previous trips to the island and the results will be discussed in terms of our knowledge of the fauna of other islands in the Lesser Antilles, and biogeographic implications will be explored.