Billy finished helping to set up tents for the night and wandered off along the river to see what he could see.  Billy and his research team were now in the Great Desert of Kanangar Prime—the South Great Desert to be precise.  Just north of them lay the lower mountains of the vast Equartic Tundra, an area around the equator that ironically appeared like a polar region due to the glaciers that covered it due to its markedly high elevation.
They were now camped along a river that flowed south from one of these glaciers into a desolate series of salt flats in the middle of the South Great Desert.  Their shuttle had landed their rover at the beginning of the river earlier that morning, and they would explore the river until the reached the end of it that Friday.  
Billy was curious to see what lifeforms they would find all the way out here in the deep desert.  During the ride that day he had seen a number of desert starglazers, as well as the congregation of SpaGGetti Monsters along the river banks.  The SpaGGetti Monster were still there, but they were now low, resting their lower tentacles, submerged partially by the river water.
He noticed the SpaGGetti Monsters luminesce, and suspected that it was some kind of predatory adaptation.  Just then Billy noticed a beautiful series of lights along the cliff side of a nearby mesa.  He scurried off to see it, roughly 200 meters away from him.
As he drew nearer he noticed that the structures where somewhat round, and held up to the bare rocks above them by root-like tendrils, silk-like in fact.  Out of the spherical hollow structures that they held came a beautiful light, the sight was one of the most pleasant ones he had seen ever since arriving on Kanangar Prime a few weeks ago.  
Billy saw two dozen primitive desert moths fluttering around the glowing orbs and saw a few go inside.  What a beautiful sight for a weary soul!
Billy drew closer in order to see what lay inside.  Perhaps this was where a female of the moth species lived, and this was the beginning of a bountiful cocoon, safe above the desert floor where predators could lurk, and protected by a thick silk that would be impenetrable to the hungry SpaGGetti Monsters.  
Billy was now a mere one meter away from the four-meter diameter orb and looking in.  He saw a centipede-like catapillar creature with luminescent patches along its body.  The creature approached the edge of the sphere near Billy, and suddenly Billy recognized what it was:  A Trillaspitter!
Just then the centipede-like creature spit a toxin into Billy's eyes and Billy shreaked in terror and the poison burned and began to make him shake all over in a vicious series of muscle spasms.
As Billy lay there, paralyzed on the ground but still fully conscious, several Trillaspitters descended from the orb and carried him up into their spherical layer, and wrapped him in a smooth layer of freshly wound silk.  Later, when they would be more hungry, they would slowly feed on his blood until their next big catch.
In the distance he could hear a few voices shouting, "Billy!  Billy!  Was that you?  Are you Okay?  Billy!"
Billy hoped they would find him in time.  He had learned the hard way that the desert is not kind to the weak…or the stupid.