I feel no strong urge to make a change. The source does say bug and not insect. Technically I see nothing wrong with saying insect because a bug is a type of insect. Both would be factually accurate according to the source. I do imagine your suspicion is correct... but neither you or I were there and it very well could have been a bug even if an insect is a more likely situation to have happened. I think this is a case where the saying "wikipedia is not interested in what is true, but what is verifiably true." I think bug is more shocking in a hook to my ears which makes it preferable in a hook. Best.