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False Head in Lycaenid Butterflies

on 18th December 2013

Above: Club Silverline (Spindasis syama terana)

“Extract from Wikipedia LINK ‘Lycaenidae is the second-largest family of butterflies (behind the Brush-footed butterflies), with over 5,000 species worldwide, whose members are also called gossamer-winged butterflies. They constitute about 40% of the known butterfly species.”

Above: Chocolate Royal (Remelana jangala travana)

“Adult individuals often have hairy antenna-like tails complete with black and white annulated appearance. Many species also have a spot at the base of the tail and some turn around upon landing to confuse potential predators from recognizing the true head orientation. This causes predators to approach from the true head end resulting in early visual detection”

Above: Scarce Silverstreak (Iraota rochana boswelliana)

“Some pics of other Lycaenids with ‘false heads’ are shown above and below.

Above: Jewel Fourline Blue (Nacaduba sanaya elioti)

“Here’s a video (below) of a Red-edge Blue (Semanga superba deliciosa) ‘scissoring’ its hind wings as a defence mechanism – as explained above in Wikipedia, or it could also be trying to attract attention to its tail (which it can afford to have damaged or missing), and away from its head…

Lena Chow
Singapore
29th November 2013

If you like this post please tap on the Like button at the left bottom of page. Any views and opinions expressed in this article are solely those of the authors/contributors, and are not endorsed by the Lee Kong Chian Natural History Museum (LKCNHM, NUS) or its affiliated institutions. Readers are encouraged to use their discretion before making any decisions or judgements based on the information presented.

YC Wee

Dr Wee played a significant role as a green advocate in Singapore through his extensive involvement in various organizations and committees: as Secretary and Chairman for the Malayan Nature Society (Singapore Branch), and with the Nature Society (Singapore) as founding President (1978-1995). He has also served in the Nature Reserve Board (1987-1989), Nature Reserves Committee (1990-1996), National Council on the Environment/Singapore Environment Council (1992-1996), Work-Group on Nature Conservation (1992) and Inter-Varsity Council on the Environment (1995-1997). He is Patron of the Singapore Gardening Society and was appointed Honorary Museum Associate of the Lee Kong Chian Natural History Museum (LKCNHM) in 2012. In 2005, Dr Wee started the Bird Ecology Study Group. With more than 6,000 entries, the website has become a valuable resource consulted by students, birdwatchers and researchers locally and internationally. The views and opinions expressed in this article are his own, and do not represent those of LKCNHM, the National University of Singapore or its affiliated institutions.

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