Locusta migratoria vs locust

Locusta migratoria and locust both are nouns.

Word	Noun	Adjective	Verb	Adverb
Locusta migratoria	Yes	No	No	No
locust	Yes	No	No	No

As nouns, locust is a hypernym of Locusta migratoria; that is, locust is a word with a broader meaning than Locusta migratoria:

Locusta migratoria: Old World locust that travels in vast swarms stripping large areas of vegetation
locust: migratory grasshoppers of warm regions having short antennae

Locusta migratoria (noun)	locust (noun)
Old World locust that travels in vast swarms stripping large areas of vegetation	migratory grasshoppers of warm regions having short antennae
	any of various hardwood trees of the family Leguminosae
	hardwood from any of various locust trees