firebug

nouns

a criminal who illegally sets fire to property
arsonist, firebug, incendiary
a true bug: brightly colored bug that can exude a stain
firebug
is a member of
firebugs
Pyrrhocoridae, family Pyrrhocoridae
is a type of (narrower)
true bugs: insects whose forewings are membranous but have leathery tips
heteropterous insect