A first approach to the knowledgeof the Melolonthid beetles of the region Frailesca in the State of Chiapas,Mexico, is presented. Most part of the original tropical deciduous forest todayis replaced by great extensions with agricultural and cattle production. Studiedlocalities were Francisco Villa, Cuauhtémoc, El Jardín and thesurrounds of Villaflores city, all from the municipality of Villaflores. Diurnaland nocturnal systematic collections of adult beetles were made in agriculturalparcels during May to September, 2006, by mean of light traps, transects, andfruit traps We obtained 6,780 specimens that represent four subfamilies, eighttribes, 17 genera and 46 species. The genera with greatest number of speciesand individuals were Phyllophaga, Diplotaxis and Ligyrus;along with the species of the genera Cyclocephala, Anomala andStrigoderma cover 88,7% of the totalabundance. An updated list of the 368 species of Melolonthidae recorded in thestate of Chiapas is included.
