Blacklegged Tick
Left to right: Adult female, adult male, nymph

Lone Star tick
Left to right: Adult female, adult male, nymph

Gulf coast tick
Left to right: Adult female, adult male

American dog tick
Left to right: Adult female, adult male

Tick sizes shown relative to each other with scale bar.
Photo credits: Emily Struckhoff, INHS Medical Entomology Lab, University of Illinois Urbana-Champaign.
