Re: Contents found on my bottom board
Those are certainly stings and venom sacks. I find them sometimes in mine, usually after robbers have tempted to infiltrate and fighting ensues. I've also noticed it sometimes when I check colonies on a "bad" day when they are angry and the ones that stung my suit retained the venom sac and sting and fall back into the hive. As for the mites, I have seen light colored varroa in one of my hives this year. I found the color difference intriguing. It does look like you have some varroa in your pics, but it's hard to tell how many with the image quality (no offense). It looks like some other critters are on the board too. It's some other type of mite, I wouldn't be too concerned with it, some mites are beneficial to the hive. Your call.
A man is worth just as much as the things about which he busies himself- Marcus Aurelius