(14) A new record for Hong Kong –Tagiades cohaerens Mabille, 1914滾邊裙弄蝶
1 December 2024
Our society photographed the first suspected butterfly T. cohaerens on 28 April 2018 at Tung Chung on Lantau Island, where it was feeding on bird droppings and has not been seen since. Recently, while compiling the new book “A Handbook of Hong Kong Butterflies”, two photos of this butterfly were found to be very similar to T. menaka with different wing spots. To confirm this, we searched the Society’s butterfly collection and successfully found a specimen, which was then dissected and confirmed that the species is indeed T. cohaerens, a new record in Hong Kong. The distinguishing feature of this species is the postmedial whitish spots below the costa, of which there cannot be more than five.
The following pictures are Tagiades menaka (Moore, [1866]) and Tagiades cohaerens Mabille, 1914 for comparison:-
(14) 香港新記錄 – 滾邊裙弄蝶 Tagiades cohaerens Mabille, 1914
2024年12月1日
本會於2018年4月28日在大嶼山東涌拍攝到第一個的疑似滾邊裙弄蝶紀錄，當時牠正在吸食鳥糞，但自此之後並沒有再發現。本會最近在編撰《香港蝴蝶手冊》新書時，再找獲兩張與黑邊裙極為相似但翅膀斑點有所差異的弄蝶相片，為此我們翻查了本會的弄蝶標本藏品，成功找到了一個標本繼而進行外生殖器的解剖，確認該種為滾邊裙弄蝶，是香港的新紀錄。該種的識別特徵是前緣下方的外中區（前翅面）白色斑點數量不超過五個。
以下是黑邊裙弄蝶 Tagiades menaka (Moore, [1866]) 和滾邊裙弄蝶 Tagiades cohaerens Mabille, 1914的標本及外生殖器解剖對比圖 ：
