Since 99.9% of the messages I get from this site are spam and phishing, let’s try this sneaky (?) way of writing my email address: aphidtrek at gmail dot com. I suggest that if you are writing to me for advice or help from a university or government account that you be sure to avoid having my replies spammed out by your system. Based on the lack of replies to my answers from some of you, I am guessing that spam filters are to blame.