''Takydromus smaragdinus'', the green grass lizard, 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 ...

lizard Lizards are a widespread group of squamate reptiles, with over 7,000 species, ranging across all continents except Antarctica, as well as most oceanic island chains. The group is paraphyletic since it excludes the snakes and Amphisbaenia alt ...

in the family

Lacertidae The Lacertidae are the family (biology), family of the wall lizards, true lizards, or sometimes simply lacertas, which are native to Afro-Eurasia. It is a diverse family with at least 300 species in 39 genera. They represent the dominant group o ...

Geographic range

It is endemic to the

Ryukyu Islands The , also known as the or the , are a chain of Japanese islands that stretch southwest from Kyushu to Taiwan: the Ōsumi, Tokara, Amami, Okinawa, and Sakishima Islands (further divided into the Miyako and Yaeyama Islands), with Yonaguni ...

in southern

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

, including the

Tokara Islands The is an archipelago in the Nansei Islands, and are part of the Satsunan Islands, which is in turn part of the Ryukyu Archipelago. The chain consists of twelve small islands located between Yakushima and Amami-Oshima. The islands have a total ...

Takarajima , literally "treasure island", is one of the Tokara Islands, belonging to Kagoshima Prefecture. The island, 7.14 km² in area, has a population of 116 persons. The island can only be reached by boat as it has no airport; there is regular ferry ...

and

Kodakarajima , literally "small treasure island", is one of the Tokara Islands, belonging to Kagoshima Prefecture. The island, 1.0 km² in area, is the smallest inhabited island in the archipelago, and has a population of 49 people. The island can only be ...

, the

Amami Islands The The name ''Amami-guntō'' was standardized on February 15, 2010. Prior to that, another name, ''Amami shotō'' (奄美諸島), was also used. is an archipelago in the Satsunan Islands, which is part of the Ryukyu Islands, and is southwest o ...

and

Okinawa Islands The Okinawa Islands ( or ) are an island group in Okinawa Prefecture, Japan and are the principal island group of the prefecture. The Okinawa Islands are part of the larger Ryukyu Islands group and are located between the Amami Islands of Kagoshi ...

. The area of occupancy of all the islands combined is around 2600 km².

Activity

''Takydromus smaragdinus'' is diurnal. It preys on insects and spiders.

Reproduction

The females lay several clutches of eggs in April to August with two eggs per clutch. The eggs hatch after about a month. The juveniles are left without parental care and reach maturity in a year.

Threats

The

IUCN The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...

lists the species as near threatened due to invasive weasels and mongooses that have led to a decline in some subpopulations.

References

Takydromus Reptiles described in 1887 Taxa named by George Albert Boulenger Endemic reptiles of Japan {{lacertidae-stub