Macrotus californicus vs macrotus

Macrotus californicus and macrotus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Macrotus californicus	Yes	No	No	No
macrotus	Yes	No	No	No

As nouns, Macrotus californicus and macrotus are synonyms defined as:

Macrotus californicus and macrotus: large-eared greyish bat of southern California and northwestern Mexico

Macrotus californicus (noun)	macrotus (noun)
large-eared greyish bat of southern California and northwestern Mexico	large-eared greyish bat of southern California and northwestern Mexico