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In order to make an inventory of phytophagous insects of the bean crop on two planting dates and to determine their population density in the Bat-304 bean variety, an investigation was carried out at "San Miguel" farm on two planting dates, the first on September 5th, 2015 and the second on February 18th, 2016. Sampling was carried out 15 days after sowing the crop, performing 6 double diagonal samplings. Samples were taken from 15 plants at random in each sampling, taking one leaf from each level. The samples taken were taken to the Entomology Laboratory for quantification and identification of the different species. The phytophagous insects detected in the bean crop on the two planting dates were: Empoasca kraemeri Ross and Moore; Bemisia tabaci Gennadius; Liriomyza trifolii Burgess; Thrips palmi Karny; Diabrotica balteata Leconte and Cerotoma ruficornis Olivier. The mean population density of B. tabaci was higher at the lower level of the plant, while the remaining species (E. kraemeri; L. trifolii and T. palmi) did not show a preference for a particular level. The intensity of chrysomelid damage was higher at the early planting date and at the middle and lower levels for both planting dates. E. kraemeri showed a higher mean population density at the late sowing date; while T. palmi showed a tendency towards a higher mean population density at the early sowing date. [ABSTRACT FROM AUTHOR]