「通りすがり」とも見られていた小さなガ、 西表島のマングローブで繁殖を確認 ―昆虫によるマングローブ利用の実態解明に向けた一歩―

2026-05-18 琉球大学

＜関連情報＞

• https://www.u-ryukyu.ac.jp/news/78003/
• https://checklist.pensoft.net/article/181971/

南日本、西表島におけるマングローブ生息地からのMaruca amboinalis (Felder, Felder & Rogenhofer, 1875) (鱗翅目、ツトガ科)の初記録、および宿主植物の追加記録 First records of Maruca amboinalis (Felder, Felder & Rogenhofer, 1875) (Lepidoptera, Crambidae) from mangrove habitats, and additional host-plant records from Iriomote Island, southern Japan

Nakatada Wachi, Yuki Matsui, Akiyo Naiki

Check List  Published:05 May 2026

DOI:https://doi.org/10.15560/22.3.448

Abstract

Maruca amboinalis (Felder, Felder & Rogenhofer, 1875) (Lepidoptera, Crambidae) was reared from larvae on the mangrove-associated vine Derris trifoliata Lour. in mangrove forests on Iriomote Island, Japan, providing the first confirmed evidence of its occurrence in mangrove habitats. Light-trap and citizen-science records from Japan, Taiwan, and India indicate a multivoltine life cycle and suggest broad ecological tolerance. Together with previous host records from Pongamia pinnata (L.) Pierre, our findings demonstrate the species’ adaptability to coastal legumes and emphasize mangroves as overlooked habitats supporting Indo-Pacific lepidopteran diversity.