Microhyla okinavensis

Basic information
Scientific name	Microhyla okinavensis	Click to magnify
Major synonym	Microhyla ornata
Common names	narrow-mouthed toad, Okinawa rice frog
Higher taxon	Microhylidae, Anura, Amphibia
Natural range	Amami, Okinawa, and Sakishima Islands including may small islets.
Habitat	Lowland forest.

Invasion information
Range in Japan	Suwanosejima Is. (Tokara Islands), Taramajima and Kuroshima Is. (Sakishima Islads)
Origin	Unknown.
Date	Maybe introduced to Taramajima around 1952 and Kuroshima around 1930s.
Route	Unknown.
Impact	Unknown. Possibly predation on potential prey animals such as ants and competition with native frogs. Native organism(s) affected: Native frogs (competition), ants (predation).
Regulation in Japan	No action for prevention, mitigation, control, or eradication.
Introduced range in other countries	None.

Reference

Notes

Maeda & Matsui (1999) Frogs and Toads of Japan. Bun-ichi Sogo Shuppan, Tokyo (in Jpn)
Maenosono & Toda (2007) Distribution of amphibians and terrestrial reptiles in the Ryukyu Archipelago: A review of published records. Akamata. 18, 28-46 (in Jpn)
Ota et al. (2004) Feral populations of amphibians and reptiles in the Ryukyu Archipelago, Japan. Global Environ Res. 8(2), 133-143.
Sengoku et al. (eds) (1996) The Encyclopedia of Animals in Japan 5 Amphibians, Reptiles, Chondrichthyes. Heibonsha, Tokyo (in Jpn)
Toda & Yoshida (2005) Issues and perspectives regarding invasive alien species of amphibians and reptiles in Japan. Bull Herpetol Soc Jpn. 2005(2), 139-149 (in Jpn)