"Bug," in its most common usage, is a large category that includes spiders, insects, and other arthropods. Crustaceans (which includes pill bugs a.k.a. roly polies) are arthropods.
So I'm not seeing your zebra analogy.
So I'm not seeing your zebra analogy.
My comparison at that point would become "humans and zebras are basically chordates"... which is true but not very meaningful in context.
And it isn't circular or superfluous in that conversation, since the point that they are similar to other arthropods (which we tend to not give a lot of concern to the pain they might experience), is relevant and seemed to have been missed by those passing the law.