Psyl'list is an online database dedicated to jumping plant lice. The aim of this ongoing project was originally to make up for the absence of a world catalogue for Psylloidea, in organizing taxonomic data and providing easy access to the published taxonomic data that is already available but scattered in the literature. Additional informations about geographical distribution, host-plants, parasitoids, predators, etc... are partly available for some species. This information is continuously supplemented and updated.