Wow that was a shitty article, with very little real info; and i couldn't be bothered to search the actual journal's obtuse listings.
But just for the sake of argument i'm assuming that the sun that normal trees already get their UV from will induce the red emissions. I'm also assuming that the red glow is delayed in some way and happens after nightfall. Like, it's brought about by some reaction during the trees' dark phase of photosynthesis... what is it, i can't remember, respiration?
Or maybe the energy is somehow stored between the gold/chlorophyl interface and takes al night to dissipate as red light...

In any case my point is that the requirement for UV energy input isn't a deal breaker all by itself.
However there is no substantial info here with which to make a determination.
Did anyone who tracked down the actual article have any insight?

BTW did ya'll like how the crappy, crappy "magazine" that TFA was in just dug up some random false-color, infrared pics of completely unrelated trees and posted them with the article. Nice!. ;)

You mean like the sun, where trees already get their outside energy from? ;)
(To be fair: shitty article, very little real info, i'm just assuming, based on essentially nothing, there might be some kind of delayed reaction/stored energy that causes the red glow to continue after nightfall.)

I hate to be pedantic when you're obviously just setting up a joke, but...
while the natural history and habitat range of recluses(loxosceles) are not well defined or understood, central California is within the accepted natural range of at least one loxosceles spider, and at least one more is thought to have been introduced and naturalized into that range as well. Also, Manteca is nowhere near the Sutter Buttes, it's actually closer to Yosemite, and closer still to the San Fransico Bay. The Buttes are a hundred-miles-or-so north of Manteca.

Sorry... close to home ...

No, no it doesn't.
Wikipedia makes no such claim. =)

Why fuck around with half-assed shit like that when you could just do four 10-hour shifts per week, and get THREE DAYS OFF every week?!