Final instar larva of a silkmoth
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Final instar larva of a silkmoth
A final instar larva of the Saturnid moth, Samia cynthia. S. cynthia is a native of Eastern China, where its cocoons are one source of wild silk. It is now found locally in the wild in Europe and the USA, the result of failed attempts to exploit its silk production. The larva in this picture is growing on privet (Ligustrum vulgare) in captivity. The picture shows the features of the external anatomy of the larva. It is attached to the food plant by means of a pair of terminal claspers (bottom) and four pairs of abdominal false legs. The black dots in a row on the side of the body are spiracles, through which the animal breathes. The prominent protrusions from the top of the body are tubercles. To the top and left of the picture are the three pairs of true (thoracic) legs and the head
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9223519
© DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY
China Larva Samia Cynthia Silk Silkmoth Spiracles Tubercles Wild Silk Claspers Ligustrum Vulgare Privet
EDITORS COMMENTS
This print showcases the final instar larva of a silkmoth, specifically the Saturnid moth known as Samia cynthia. Originally native to Eastern China, this species is renowned for its cocoons which are a valuable source of wild silk. Despite failed attempts to exploit its silk production, S. cynthia can now be found in Europe and the USA in their natural habitats. In this image, we observe the larva thriving on privet (Ligustrum vulgare) while being held in captivity. The photograph provides an intricate view of the external anatomy of the larva. Notably, it clings to its food plant using a pair of terminal claspers at its bottom and relies on four pairs of abdominal false legs for movement. The row of black dots along the body's side represents spiracles through which this remarkable creature breathes. Additionally, protruding from the top are tubercles that serve as prominent features distinguishing it from other larvae species. Towards the top and left corner lies three pairs of true (thoracic) legs alongside its head – essential appendages for locomotion and feeding purposes. This stunning visual representation offers insight into both scientific study and appreciation for nature's wonders. It serves as a testament to our fascination with diverse ecosystems and reminds us how interconnected our world truly is.
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