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Keywords:

  • endemism;
  • New Caledonia;
  • niche conservatism;
  • species' distribution modelling

The patterns of local endemism in New Caledonia were analysed in two endemic genera of Tingidae (Insecta, Heteroptera), Cephalidiosus and Nobarnus, through a phylogenetic analysis and species' distribution modelling. The aim was to determine the possible causes of diversification and endemism in New Caledonia. Our results show that environmental conditions are probably important for the distribution of the genus Cephalidiosus, in conjunction with other factors such as resource (host plant) distribution, but suggest that the same environmental conditions have not influenced the speciation processes and diversification in the genus. © 2009 The Linnean Society of London, Biological Journal of the Linnean Society, 2009, 97, 177–184.