We're from Western New York and am new to raising monarchs, as you will realize if you read further --- I spotted a monarch a few days ago fluttering through the garden, so have been checking the milkweeds for any sign of eggs. Today, I noticed one of the leaves on my common milkweed was lacy with holes and when checking the underside, it was full of tiny -- maybe 1/16" -- caterpillars that I'm assuming are monarchs. But I was surprised at the number -- 100-200! Is that possible? The area on the leaf that they appear to have come from is a white spot about the size of a dime. My husband built a nice cage that I've covered the plant with to protect the little ones, but now I'm wondering if they're even monarch larvae -- I could be raising Japanese Beetles for all I know ... guess only time will tell.