Frank - It looks like a Firebug: Pyrrhocoris apterus. Also, as a species, it belongs to bugs and not beetles .. if my english is correct
Your usage is correct!
What's confusing is that colloquially, the word
bug is used in English to mean any insect or even other land arthropods. For example, the land isopods in the family Armadillidiidae are commonly called
pillbugs and they're not even insects.
However, from the scientific standpoint
bug means an insect in the order Hemiptera such as the one we're looking at in this thread. Most English speakers would only be aware of the colloquial usage.