This week's case was generously donated by Dave Neitzel at the Minnesota Department of Health. A mutant headless tick! Wouldn't it be great if they were all this way? What's the genus of this tick?
Read Dr. Pritt's blog, Parasite Wonders, and submit your answers, comments, and questions. Also, visit her website ParasiteWonders.com, which hosts an archive of classic images from cases Dr. Pritt posted going back to 2007 (in an easy-to-search "A through Z" format) and also offers a flashcard feature.
Ixodes scapularis adult female with a missing external capitulum and mouthparts.