I posted the main website, but here is the link for "Testing" and signs of infection.http://monarchparasites.uga.edu/testing/index.html
Basically, you take clear tape and press that gently on the butterflies abdomen. That is where most of the spores are located. Place that on a white piece of paper. Index cards are good. Then, you take a lighted microscope and check to see if you see spores. The website below has pictures. http://www.monarchparasites.org/
What is OE
OE spores are dormant cells found on the outside of infected monarchs. These tiny spores are sandwiched in between the scales that cover a butterfly’s body. The greatest concentration of spores is usually on the abdomen. Spores are much smaller than scales. In fact, a monarch scale is about 100 times larger than an OE spore. You must use a light microscope set at 40 to 100X to see a spore.
Even at this magnification spores look like small, brown or black lemon-shaped objects. Here is a picture of OE spores at 400X:
If you have infected butterflies, then read this info from Dr. Altizer:http://www.monarchwatch.org/forums/view ... f=6&t=2938
If possible, take the time to participate in Project Monarch Health:http://monarchparasites.uga.edu/monarchhealth/index.htm
Something as small as this lighted microscope will work:http://www.amazon.com/Carson-MM-200-Mic ... microscope
If you order any thing from Amazon, go through the Monarch Watch Amazon portal, then Monarch Watch will get part of the proceeds:http://monarchwatch.org/amazon/
Monarch Watch Amazon Portalhttp://www.youtube.com/watch?v=eZjhVOcX5SI
Live Monarch Foundation has a good video on how to check for OE
Project Monarch Health does have some good videos on learning how to raise Monarchs:http://monarchparasites.uga.edu/video_archive.html
Last, have you tried the search upper right?