Floating row cover had opposite effect for "protecting" ladybug larvae; and ladybug update

Today I tried covering the asparagus ferns with floating row cover, to keep the wasps out. Well that didn't work -- twice I saw a larvae walking around on the OUTSIDE of the cover. So, removed it. The good news is there are at least three good-sized larvae. One I brought inside today. The other good news is there's an adult red ladybug hanging around the plant. The more other good news is there are fresh ladybug eggs! (one batch) The bad news is while I was out there watching, another wasp/hornet dove in! I gently batted away before landed, didn't come back.