| distribution and seasonal and diurnal activity patterns of eutrombicula alfreddugesi (acari: trombiculidae) in a forest edge ecosystem. | microclimatic and vegetative effects on the population size and activity patterns of larval eutrombicula alfreddugesi oudemans, 1910 (acari: trombiculidae), were investigated in nebraska between latitude 40 degrees 0'0" n and 40 degrees 1'21" n. larval population densities along a forest edge were greatest in areas of high relative humidity, moderate temperature, low incident sunlight, and increasing substrate vegetation. although chigger populations existed throughout the forest edge, larger po ... | 1993 | 8433345 |