Published February 7, 2013 at 500 × 250 in Grooming Helps Insects Keep Their Senses Sharpened Electron microscopy images show ungroomed, groomed and cleansed roach antennae (A-C). Also shown are tiny, pheromone-sensitive sensilla on the antennae (D-F). Image credit: North Carolina State University (Visited 9 times, 1 visits today)