jumping spiders are interesting little spiders. i watched one hunt for over an hour once. They actually search every nook and cranny to find food. whats weird is that it looks like they are conciously, and intellegently looking.
They can be a really smart, probably one of the most intelligent family of spiders. They choose different types of hunting when they meet different types of prey. They can learn topography of terrain they hunt on.
Ok, this is cool but it reminds me of nightmares I had of flies with eyes like this that I would have when I was little... I use to have a bizarre phobia of flies... not so much any more... it's sad because their really cool animals, but some of them are just make me very... uncomfortable (such as horse flies & bot flies understandably). If I could understand it better my self I'm sure i could tell you more, but unfortunately I don't.
Luckily we don't live in tropics where are parasitic species that can attack humans. Two of my friends were parasited by flies when they were in South America. Flies larvae developed under their skin... that was ugly and annoying but very interesting experience
UUuuuuugh... Yes, I know all about Bot flies (or as they may also be called 'Warble flies', thank you. We have them up here in the deciduous & farther north into the circumpolar environments (those ones up there target the caribou herds). Down where I live & around & the Central & Norther U.S. there are a few cryptic bot fly species that prey, not on humans (thank god!) but on rodents, rabbits, horses, and other mammals (in fact horses come with their very one species that lives, not in their skin, but in their stomachs, much like the caribou flies).
I've encountered the puparium of a rodent warble fly & it was bizarre & creepy. Pupariums ('uparia'?) are like cocoons, but they form from the dead, hardened larval skin rather then being weaved from silk (it's a cocoon that grown, if you will, rather then made or secreted.) It was the size of a small lima been & black... it looked kinda like a nut or a large seed, it was fine until I realized what was growing inside of it. So I placed it back where I found it after shooting some photos & left it be.
In a warped kind of way, I'm happy that your friend were in South America & got Bots rather then in Africa where they can get Tumbu Flies... If you want more info on them you'll have to google, sorry. Worms, blood sucking flies, mites & ticks, leeches, lice, fungi, and protozoa are all fine, but when you through in the parasitic maggots I start walking in the other direction... granted of course they're still in their host... outside they're quite interesting, structurally.
Wow, that thing is bizar then. I'm thought all spiders had (many) little eyes. Anyway, cool effect, I'm really scraed of spiders, but this one actually looks kinda funny (stil don't want it in my room though) but it's a start!