Sadly, I think those are enormous beetles.
And come to think of it, I always did find it silly for Shepard to be asking about the Protheans at the beginning of Mass Effect 1 when he's talking on the Normandy with Anderson and Nihlus. But, you have to remember that was the first game of the series and not everybody even knew that the codex existed that early in the game. Still, you can't help but feel stupid for those options being there on successive playthroughs.
Did you really expect Bioware to program them out of there on NG+? If you already know the answers then don't ask the questions =P It's all gameplay, story, and lore convenience. Why people are complaining about it is silly.
I'm surprised nobody has complained that Shepard can know an answer, while not knowing an answer at the same time. In ME2 you get the option of Shepard asking what a Collector is, with the other option having Shepard give Collector exposition. Are we going to complain about plotholes now, or realize it's for player convenience and that it is good game design, not bad?
Bioware is not a horrible dictator out to slaughter our families and ruin our lives. For every poor decision they make they make about 2 dozen good decisions. Why can't we focus on the good anymore?