Several butterflies in the genus Neptis are very similar, and I believe the one I saw on Mt. Jiantan Trail was a Neptis sappho butterfly. Neptis sappho, the Pallas' sailer or common glider, is a nymphalid butterfly found in Central Europe, Russia, India and other parts of temperate Asia and Japan. The larvae feed on Lathyrus vernus, Lathyrus niger and Robinia pseudoacacia. Mainly inhabits evergreen broad-leaved forests. More than one generation a year. Adult butterflies like to visit flowers and also suck up rotten stuff and water. The larvae bite the leaves into continuous fragments to form a curtain-like structure.
數個環蛺蝶屬中的蝴蝶都很相像，我想我在劍潭山步道上看到的是小環蛺蝶。小環蛺蝶（又名小三線蝶、荻胥、荻環蛺蝶、小三線蛺蝶）是一種蛺蝶科蝴蝶，分佈於於中歐、俄羅斯、印度以及亞洲溫帶其他地區和日本。幼蟲取食豆科葛藤、老荊藤；朴樹科糙葉樹，春苦豆、黑山黧豆和刺槐。主要棲息在常綠闊葉林。一年多代。成蝶好訪花，也會吸食腐敗物與吸水。幼蟲會將葉片咬成連綴之碎片狀，形成簾狀構造。
Notes 筆記
- Neptis sappho, the Pallas' sailer or common glider, is a nymphalid butterfly found in Central Europe, Russia, India and other parts of temperate Asia and Japan.
- The larvae feed on Lathyrus vernus, Lathyrus niger and Robinia pseudoacacia.
- Mainly inhabits evergreen broad-leaved forests. More than one generation a year. Adult butterflies like to visit flowers and also suck up rotten stuff and water. The larvae bite the leaves into continuous fragments to form a curtain-like structure.
- 小環蛺蝶（又名小三線蝶、荻胥、荻環蛺蝶、小三線蛺蝶）是一種蛺蝶科蝴蝶，分佈於於中歐、俄羅斯、印度以及亞洲溫帶其他地區和日本。
- 幼蟲取食豆科葛藤、老荊藤；朴樹科糙葉樹，春苦豆、黑山黧豆和刺槐。
- 主要棲息在常綠闊葉林。一年多代。成蝶好訪花，也會吸食腐敗物與吸水。幼蟲會將葉片咬成連綴之碎片狀，形成簾狀構造。
References 參考資料
- Wikipedia: Neptis sappho
- 臺灣產蝶蛾: 小環蛺蝶
- 臺灣蝴蝶網路圖鑑: 小環蛺蝶
Insects Posts 昆蟲的帖子