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Lime Butterfly and its host tree Clausena excavata

on 19th May 2014

“On 17th April, I noticed that there were a few caterpillars on a Pink Lime-berry tree (Clausena excavata) while watering my plants in the afternoon. [Note: this tree can easily be mistaken as the Indian Curry Tree (Murraya koenigii).] On previous occasions, I never had the chance to see them turning into butterflies. The caterpillars were probably eaten by birds. This time I decided that I should keep a few of them protected from predators. For good measure I kept four just in case some of them may not develop successfully for other reasons. The image below-left shows one that is in the 3rd instar.

“The caterpillars were kept in a container with a small ventilation opening. Fresh leaves were used and frass (droppings) cleared daily. By 22nd April one of them were in the 5th instar (above-right).

“The above image was taken on 23rd April showing three 5th instar caterpillars.

“The above-left image, taken on 24th April showing one that has stopped feeding and remained dormant on the side wall of the container. By 26th April the caterpillar had spun silkpad on the side wall (above-right). It had become immobile as a pre-pupatory larva.

“By the next day it had become a green pupa (above-left). On 28th April another caterpillar attached itself to the side wall of the container (above-right).

“At about 7.15 am on 5th May, yellow spots and bands became visible on the first pupa. By about 8.30 am, the eclosion was completed with the butterfly resting just at the side of the exoskeleton of the second pupa (above). The latter was found, unfortunately, to have body fluid stain on the wall below the pupa a few days earlier, probably the sign of attack by parasites. The butterfly was released soon after it was ready to fly (below).

“The series of images clearly show that a Lime Buttefly (Papilio demoleus malayanus) has emerged from the pupa that fed on leaves of the Pink Lime-berry tree.”

Note: unless otherwise stated, all images were taken at around 9 am in the morning.

Sun Chong Hong
Singapore
5th May 2014

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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