Newly discovered spider builds spring loaded snare to catch ants

215 points - last Sunday at 8:05 PM

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NitpickLawyer today at 11:57 AM
Heh, for a second there this read like some of the Portiid adventures with Bianca and Fabian from Adrian Tchaikovsky's book "Children of time". If you find this kind of thing interesting and are a fan of sci-fi, I highly recommend the book.
qurren today at 6:31 PM
"Just a quick check" ... no thanks. Bounced. Just deliver me the information when I send a request, I didn't ask to be checked.
Foskya today at 10:03 AM
It is truly fascinating, I wonder how it evolved like that. Before becoming a spring as it is today how was it hunting in the past? What constraints made it need such a mechanism instead of a typical web?
matheusmoreira today at 9:41 AM
I wonder why biological organisms are capable of such absurdly high accelerations. Article reminded me of cnidocytes which apparently produce anywhere between 40,000 and 5,410,000 g. Is it because of the small masses involved?
som today at 3:09 PM
I'm from where these spiders were found. The ants they're predating are an equally fascinating and super aggressive species of green weaver ants (that have other cool predators like "mimic" jumping spiders).

https://en.wikipedia.org/wiki/Weaver_ant

kiproping today at 10:46 AM
The videos are amazing. Sadly I think theses types of adaptations make it easier for the species to go extinct since its so highly specialized.
enjrolas today at 11:34 AM
The part from the paper which is so interesting is why the ant bites the trap in the first place. The paper suggests that the spider puts out a pheromone that attracts the ant and triggers the ant to aggressively bite the snare, but the pheromone only does this for the spider's target species, the green tree ant. The researchers watched three other ant species check out the snare, go "meh", and move on, unharmed, without showing any aggression towards the snare.
chrisrickard today at 1:08 PM
Of course it’s an Australian spider
taf2 today at 1:14 PM
this gives me children of time vibes
pvaldes today at 10:21 AM
amarant today at 11:09 AM
[dead]
tclancy today at 10:58 AM
It is the year 2038. A new brand of slingshot is almost immediately removed from store shelves after multiple children receive through-and-through wounds.
jimnotgym today at 11:40 AM
HN pedantry time:

>discovered a remarkable new spider species...

Recently evolved then?

Or perhaps...

"An international team of researchers has recently discovered a remarkable spider species..."