How can you distinguish cat mange from sarcoptic mange under microscopy?

• A. A fingerprint-like impression on the parasite
• B. Thumbprint-like print under the microscope
• C. A circular ring on the cuticle
• D. No distinctive features under microscopy

Answer: (B)

Distinguishing these mites under the microscope comes down to a surface feature on the parasite. The cat mange mite shows a thumbprint-like impression on its cuticle, a pattern produced by the specific ridges on its exoskeleton. This feature is a reliable visual cue that helps identify the feline mite and sets it apart from the sarcoptic mange mite, which does not display that thumbprint pattern. In routine skin scrapings, finding that distinct thumbprint-like print points to cat mange; if that pattern isn’t seen, other morphological clues or patterns typical of the sarcoptic mite would be considered.