The Flat Mite (<i><a href="https://en.wikipedia.org/wiki/Brevipalpus_phoenicis" class="extiw" title="w:Brevipalpus phoenicis">Brevipalpus phoenicis</a></i>) carries the Leprosis Virus in Citrus, a disease currently in South America but moving North.  Magnified 600X. False colors added. (LTSEM) Plate # 27305.
Courtesy, Erbe, Pooley: USDA, ARS, EMU.  "All of the micrographs on the web site are in the public domain and can be freely used."  --Christopher Pooley.
Source not available online.  <a rel="nofollow" class="external free" href="http://emu.arsusda.gov/typesof/default.html">http://emu.arsusda.gov/typesof/default.html</a>