''Anolis callainus'', the Dominican green anole, Northern Hispaniolan green anole, or Hispaniolan green anole , is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of lizard in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Dactyloidae Dactyloidae are a family of lizards commonly known as anoles () and native to warmer parts of the Americas, ranging from southeastern United States to Paraguay. Instead of treating it as a family, some authorities prefer to treat it as a subfami ...

. The species is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the

Dominican Republic The Dominican Republic ( ; es, República Dominicana, ) is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean region. It occupies the eastern five-eighths of the island, which it shares wit ...

, where it is found throughout the eastern half of the country. It has also been introduced to

Suriname Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republiek Suriname , srn, Ripolik fu Sranan), is a country on the northeastern Atlantic coast of South America. It is bordered by the Atlantic Ocean to the north ...

and southern

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

. Previously considered conspecific with the Tiburon green anole (''A. chlorocyanus''), a 2020 study restricted ''chlorocyanus'' to the population found in western

Haiti Haiti (; ht, Ayiti ; French: ), officially the Republic of Haiti (); ) and formerly known as Hayti, is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean Sea, east of Cuba and Jamaica, and ...

, and redescribed the eastern Dominican Republic population as a new species, ''A. callainus''. It is very similar to the North American species, the

green anole ''Anolis carolinensis'' or green anole () (among other names below) is a tree-dwelling species of anole lizard native to the southeastern United States and introduced to islands in the Pacific Ocean, Pacific and Caribbean Sea, Caribbean. A smal ...

(''Anolis carolinensis''), but males have a light blue throat flap, instead of red. Females and juveniles may have darker green stripes lining the sides of their bodies, but males are often a pure bright green color.

References

Anoles Endemic fauna of the Dominican Republic Reptiles of the Dominican Republic Reptiles described in 2020 Taxa named by Gunther Köhler Taxa named by Stephen Blair Hedges {{lizard-stub