Notonectoidea - family or superfamily?

in taxonomy:

names that end with the suffix -idea is a superfamily

names that end with the suffix -idae is a family

names that end with the suffix -inae is a subfamily

names that end with the suffix -ini is a tribe

Names for families and superfamilies are made the same way: take the genus name of the type species, change it to the genitive case, then replace the ending with -idae for families or -oidea for superfamilies. A subgroup that contains the type species for a larger group will have that species as its own type, so the first part of the name will be the same.

In fact, for every superfamily, there will be a family, a subfamily, and a tribe with the same type species and the same first part of the name. If a group is the only one of its level in the larger group that contains it, nobody bothers to mention it. The genus is always mentioned because a scientific name for an organism- by definition- always has to include both the genus name and the species name.

Notonectoidea is the superfamily that includes the family Notonectidae and, according to ITIS, the family Pleidae (also the subfamily Notonectinae and the tribe Notonectini). Since we don't have superfamilies shown in the BugGuide taxonomic hierarchy, you don't have to worry about Notonectoidea at all- just create a page for Pleidae at the same level as Notonectidae and put Plea striola under it