Stock photography, photos: Progressive Bee Fly Stock photos of Progressive Bee Fly feeding on Western Sunflower Photograph: © Jerome Wilson Click for a larger image and more information Keywords associated with this stock photo: Progressive Bee Fly, bee, fly, insect, Exoprosopa, Western Sunflower, yellow, flower, wildflower, Helianthus occidentalis, sipping, nectar, feeding, pollen, pollinate, pollination, pollinator, proboscis