dmcg- I am going to be guilty of backtracking. my only defence being that I realized between last posting and looking here again where I had erred. I later realized that I was responding mistakenly to a wrong question.   the record says nothing about insect life, and in fact details those perishing as nostril breathing animals and birds.
so to answer again.....how many beetles on the ark?    ....
I don't know but they were not, I think, included in the 2's or 7,s gen 7v2,3,21,22. neither do I know how many might survive outside the ark on floating wood or vegetation mats for example.
penny done a good job of detailing difficulties for my previous answer, for which I apologize for wasting her time.
of course I do appreciate that if the same difficulties obtain regarding qualifying animal life that I still have a difficulty.