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In Chile, the order Scorpiones has 35 species, included in the families Bothriuridae, Iuridae, and Buthidae. Most of them are endemic species, well adapted to xeric environments. We studied the taxonomic structure of the scorpiofauna with regards to the plant formations present in the transitional coastal desert of Chile (25-32 degrees S). Captures of scorpions were conducted with pitfall traps and UV light. Data from de field were complemented from literature and reference material. We identified the presence of 9 species in a total of 226 specimens captured, in the families Bothriuridae and luridae. The most abundant genera of Bothriuridae, represented by eight species, were Brachistosternus and Bothriurus, with 55.4 % and 11% respectively of total captured specimens. Regarding Brachistosternus, Br. (Leptosternus) roigalsinai was the most abundant species, with 38.9 % of total captured specimens. Caraboctonus keyserlingi (Iuridae) made the 33.2 % of total captured specimens. The highest species richness of scorpions, with six and seven species were respectively, the plant formations of the coastal desert of Huasco (27 degrees 52’ S, 71 degrees 05’ W; 29 degrees 24’ S, 71 degrees 18’ W) and those of the coastal shrubby steppe (29 degrees 24’ S, 71 degrees 18’ W; 30 degrees 34’ S, 71 degrees 42’ W). The coastal deserts of Tal-Tal (23 degrees 52’ S, 70 degrees 30’ W; 27 degrees 51 ’ S, 71 degrees 05’ W) and Huasco presented exclusive species. The analysis of correspondence showed that, to the scorpiofauna studied, the coastal shrubby steppe would represent a transitional zone of geographic distribution. Finally, we discussed in function of substrate preference, some aspects related to habitat occupation showed by some of the recorded species.