Scanning electron microscope (SEM) images of two dust mites, Sturnophagoides
brasiliensis and Sturnophagoides halterophilus, are presented to provide an improved
visualization of the taxonomic characters of these mites. Sturnophagoides halterophilus can be
differentiated from S. brasiliensis by their expanded genu and femur of leg I. The differences in
morphology of male and female S. brasiliensis are also discussed.