The black bump on this honey bee's back is a varroa mite. Mites weaken bees' immune systems, transmit viruses, and siphon off nutrients. Photo by Scott Bauer, USDA Agricultural Research Service.
{"Image ImageWidth": "2700", "Image ImageLength": "1764", "Image BitsPerSample": "[8, 8, 8]", "Image PhotometricInterpretation": "2", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "135", "Image YResolution": "135", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CC (Windows)", "Image DateTime": "2018:04:20 15:57:58", "Image ExifOffset": "232", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "135", "Thumbnail YResolution": "135", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "382", "Thumbnail JPEGInterchangeFormatLength": "5152", "EXIF ExifVersion": "0221", "EXIF ColorSpace": "Uncalibrated", "EXIF ExifImageWidth": "1215", "EXIF ExifImageLength": "794"}