class Insecta vs Insecta

class Insecta and Insecta both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Insecta	Yes	No	No	No
Insecta	Yes	No	No	No

As nouns, class Insecta and Insecta are synonyms defined as:

class Insecta and Insecta: insects; about five-sixths of all known animal species

Other synonyms of class Insecta include class Hexapoda, Hexapoda.

class Insecta (noun)	Insecta (noun)
insects; about five-sixths of all known animal species	insects; about five-sixths of all known animal species