Insectaria

Part of speech: noun

Definitions

1. A collection or exhibit showcasing various species of insects
2. a specific area or facility dedicated to the study and display of insects
3. a classification or group encompassing the diverse insect population within a particular environment

Etymology: "Insectaria" is the plural of "insectarium", a building or enclosure where insects are kept and displayed, and the word is built in the plainest way possible: the Latin-derived "insect" combined with the suffix "-arium", a Latin ending used to name a place or container associated with something, as in "aquarium" (a place for water creatures) and "planetarium" (a place for planets). The sense of "insectarium" as a place for housing insects follows that pattern exactly, so the word needs no hidden history to explain it. The plural form "insectaria" is the one that follows Latin-style neuter endings, which is why it looks unfamiliar to many English speakers, who more commonly write "insectariums." Both plurals are in use, and each reflects a different choice between a classical pattern and an English one. The form was also used in a broader, looser sense in the meaning you have given, referring to a collection of insects gathered within one environment.