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This spider mimics ants to trick predators, but it’s not foolproof
May 29, 2023
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Siler collingwoodii, a jumping spider found in China and Japan, imitates certain features of ants

Editor’s note: In the immense world of the animal kingdom, a host of species have developed their unique mimicry skills to attract prey or confuse predators. The deceptive act, however, is not always reliable. A recent Peking University study observes a jumping spider’s unlikely story of survival — by copycatting the movements of ants (with some flaws). 

Zhang Wei, a zoology researcher at Peking University School of Life Sciences, has recently published a paper in iScience. Her research focuses on how the spider species Siler Collingwoodi imitate certain features of ants as part of their survival tactics.

To understand how ant-mimicry helps these spiders avoid being eaten, Zhang’s research team has collected wild ant-mimicking spiders from four geographic locations in southern China's Hainan Province. 

The research team explored the role of the spider’s brilliant coloration and how it serves as camouflage to protect against predators through trajectory analysis and locomotor characteristics of S. Collingwoodi

However, S. Collingwoodi’s ant mimicry proves to be imperfect. As shown from the experiment of the spider tested against a mantis and a predatory spider, out of 17 trials, the spider launched five attacks, all of which were toward the non-mimic control. The praying mantises, however, attacked both prey species with equal alacrity. 

Throughout the long process of ecological adaptation, animals have developed tactics of mimicry to increase their survival chances. Traditionally, perfect mimicry that features high resemblance in movement patterns has gained widespread attention in the research field as it might result in higher predator deception, but Zhang’s research results show that it may not be entirely foolproof against the animals’ predators.


Written by: Lim Qin Xuan 
Edited by: Shi Xinyao 
Source: PKU School of Life Sciences