(Megan Kennelly, KSU Plant Pathology)
In my neighborhood, and many communities across Kansas, we had an outbreak of oak leaf itch mites with a peak a couple of years ago. If you have itch mites in your area this year, you’ve had them before, or you simply have oak trees around, here is a new information sheet from KSU Entomology about this topic:
https://www.bookstore.ksre.ksu.edu/pubs/MF2806.pdf
With raking season upon us, take extra care if you do have them active in your area this year.
Curled leaf symptoms:
Unhappy person with itch mite bites during windy raking season a few years ago: