Species information Scientific name: Pachyrhynchus infernalisJapanese name: クロカダゾウムシChinese name: 八重山球背象鼻蟲English name: Yaeyama Pachyrhynchus weevilOrigin: Ishigakijima, Iriomotejima Ecology and description This species is the only representative of the genus Pachyrhynchus confirmed to occur in Japan, and it is found only on Ishigakijima and Iriomotejima. Members of this genus are primarily distributed across the Philippine islands, with… Continue reading Yaeyama Pachyrhynchus Weevil
Tag: Iriomote
Sakishima Green Snake
Species information Scientific name: Cyclophiops herminaeJapanese name: サキシマアオヘビChinese name: 先島青蛇English name: Sakishima green snakeOrigin: Yaeyama Islands, Miyako Islands Ecology and description Sakishima green snake has a body length of about 50-85 cm, and its color is more like gray-green. The head appears relatively small and sometimes it has dark longitudinal stripes. Juveniles have transverse patterns.… Continue reading Sakishima Green Snake
Sakishima Wolf Snake
Species information Scientific name: Lycodon walliJapanese name: サキシママダラChinese name: 先島紅斑蛇、沃氏鏈蛇English name: Sakishima wolf snakeOrigin: Miyako Islands, Yaeyama Islands Ecology and description This species was originally considered a subspecies of the Red-banded snake (Lycodon rufozonatus), but it has now been elevated to a distinct species. Its pattern is more yellowish compared to the Red-banded snake (Lycodon… Continue reading Sakishima Wolf Snake
Owston’s Tree Frog
Species information Scientific name: Zhangixalus owstoniJapanese name: ヤエヤマアオガエルChinese name: 八重山樹蛙English name: Owston’s tree frogOrigin: Ishigakijima, Iriomotejima Ecology and description The breeding season of Zhangixalus owstoni runs from December to April. This species was formerly considered a subspecies of Zhangixalus viridis (Okinawan tree frog), but is now recognized as a distinct species. It is very abundant… Continue reading Owston’s Tree Frog
Giant Japanese Funnel-web Spider
Macrothele gigas Japanese Name: オオクロケブカジョウゴグモChinese Name: 巨型長尾蛛English Name: Giant Japanese Funnel-web SpiderOrigin: Ishigakijima, Iriomotejima The genus Macrothele is commonly called “jougogumo” (ジョウゴグモ) in Japanese, a name likely derived from the shape of its web, which resembles a funnel (漏斗, jougo). The following Macrothele species are found in Japan: Although M. gigas and M. yaginumai are… Continue reading Giant Japanese Funnel-web Spider
Brown Land Crab
Cardisoma carnifex Japanese Name: ミナミオカガニChinese Name: 凶狠圓軸蟹English Name: Brown Land CrabOrigin: Coastal regions of Southeast Asia bordering the Pacific and Indian Oceans; in Japan, found on islands south of Yoronjima in the Ryukyu Islands. The Brown Land Crab is one of the terrestrial crabs found in the Ryukyu Islands. In recent years, its population has… Continue reading Brown Land Crab
Taiwan Whipscorpion
Typopeltis crucifer Japanese Name: タイワンサソリモドキChinese Name: 台灣鞭蠍English Name: Taiwan WhipscorpionOrigin: Iheyajima, Okinawajima, Ishigakijima, Iriomotejima, Hatomajima, Kohamajima, Yonagunijima, Taiwan When threatened, the Whipscorpion releases an acidic gas containing acetic acid from the tip of its tail to drive away predators. This species is relatively common on Ishigakijima and Iriomotejima but rarely seen on Okinawajima. Males and… Continue reading Taiwan Whipscorpion
Minei Freshwater Crab
Geothelphusa minei Japanese Name: ミネイサワガニChinese Name: 嶺井澤蟹English Name: Minei Freshwater CrabOrigin: Ishigakijima, Iriomotejima The Minei Freshwater Crab is an endemic species found only on Ishigakijima and Iriomotejima. It is a small freshwater crab with a carapace length of about 2.5 cm. Its claws are slightly reddish-orange in color.
Goodyera hachijoensis
Goodyera hachijoensis var. matsumurana Japanese Name: カゴメランChinese Name: 銀線蓮、假金線蓮English Name: Goodyera hachijoensisOrigin: Izu Islands, Yakushima, Tokara Islands, Okinawa Islands, Amami Oshima, Yaeyama Islands, Taiwan Goodyera hachijoensis has also been recorded from Okinawajima, but the number of individuals is very low, making it an extremely rare plant. Due to frequent illegal collection, strong conservation efforts are… Continue reading Goodyera hachijoensis
Ryukyu Stream Cricket
Species information Scientific name: Vescelia pieli ryukyuensisJapanese name: リュウキュウサワマツムシChinese name: 琉球擬亮蟋、比爾擬亮蟋琉球亞種、皮爾氏亮蟋琉球亞種English name: Ryukyu stream cricketOrigin: Amamioshima, Tokunoshima, Okinawajima, Kumejima, Ishigakijima, Iriomotejima Ecology and description In streamside environments of Okinawajima and other islands, the clear and high-pitched calls of the Ryukyu stream cricket can often be heard. These sounds are courtship calls produced by males rubbing… Continue reading Ryukyu Stream Cricket