Diversity and population fluctuation of Scolytidae (Coleoptera) in plantation of urograndis and urocam, in the city of Cuiaba, state of Mato Grosso, Brazil

This work was developed from April of 2008 to March of 2009, with the purpose to identify the species of Scolytidae that occur associates in plantation of the Eucalyptus hybrids urograndis and urocam. It was studied the stand of each hybrid, being used six ethanolical traps with the attractant combustible alcohol hidratado by stand. The captures had been biweekly and the individuals had been taken for the Laboratory of Forest Protection, of the College of Forestry/ Engineering / Federal University of Mato Grosso. Qualitative and quantitative studies had been carried in both the sampled environments. It was collected 23 species and 810 individuals in urograndis hybrid and 17 species and 983 individuals in urocam hybrid. Hypothenemus eruditus, Xyleborus affinis and Xyleborus ferrugineus was the species quantitatively the most representative in urograndis, and in urocam, Premnobius cavipennis and Xyleborus affinis was the most expressive species. The species Xyleborus affinis and Hypothenemus eruditus occurred with populations peaks in the drought months, and Xyleborus ferrugineus occurred populations peaks in the rain month.