快猫短视频

Some moths and flies disguise themselves as the jumping spiders that eat them 鈥� and the trick is highly convincing when viewed from a predator鈥檚 perspective.

This might allow such prey to escape before the spiders can recognise the ploy and pounce, says at the University of Veracruz in Mexico.

鈥淭hey just need a little bit more time, a little bit of confusion on the part of the predator, and that鈥檚 enough for them to move to a different part of the tree or leaf,鈥� he says.

快猫短视频s had already noticed that the backs and wings of certain tephritid flies and metalmark moths resembled the front of jumping spiders, with dot patterns that look like their four large eyes.

However, humans don鈥檛 have the same visual sense as spiders, and we are prone to seeing patterns when there are none, says Rao. To better understand the insects鈥� mimicry, he and his colleagues turned to an artificial intelligence system designed to recognise patterns in images.

The team first collected more than 1000 photos of insects and spiders uploaded to and other citizen science platforms. Then they to distinguish images of jumping spiders facing the camera from those of insects with a variety of body shapes.

The researchers then gave it a new series of images and asked it to evaluate the likelihood that the creatures pictured were jumping spiders. These included eight species of flies, moths and plantoppers thought to be jumping spider mimics 鈥� as well as a common housefly (Musca domestica) as a comparison.

The AI considered that the Mediterranean fruit fly (Ceratitis capitata), a barklouse (Cymatopsocus enderleini) and the arched marble moth (Olethreutes arcuella) were more than 90 per cent likely to be a jumping spider, while four of the other insects were more likely to be jumping spiders than not.

The angle of the photo turned out to be critical, however. The fruit fly was rated as 95 per cent likely to be a jumping spider when viewed from the side, but less than 28 per cent from any other angle.

鈥淭he angle where the mimicry is most apparent is where the predator is mostly coming from,鈥� says Rao. This kind of imitation hasn鈥檛 been described before and Rao calls it 鈥減artial mimicry鈥�.

By modifying the photos to simulate how they would look to different animals, the team showed that the disguise works particularly well for jumping spider eyes, but it is less successful for wasps.