red books had their beginnings to the mid-sixties to call attention to the species that are endangered .. Since then the criteria for defining whether a species is threatened have gone through a process of progressive refinement to reach those in effect since the mid-nineties. In its modern form the red books assess the degree of threat of extinction found in different species and propose measures conservation. The establishment of new criteria and categories by the IUCN in 2001 with a quantitative emphasis to reduce the degree of subjectivity in the classification of species has been an important tool for a new generation of red books worldwide. These criteria led to a clear need to update the information to the fauna and flora which was considered as threatened in country.Security lists presented are preliminary, produced in 1998 and since then subject to review by more than one hundred researchers linked the process of redbooks . The categorization was based on the methodology proposed by IUCN 1994, but applied to the national knowledge apart from the global nature. The Humboldt Institute would like to acknowledge the work done by the authors of the lists, as they have become the basis of the work of the red books.
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