Centriroides sculpturatus By Matt Young June 25, 2018 11:00 MST Photograph by Alan Rice. Photography contest, Honorable Mention. Centriroides sculpturatus – Arizona bark scorpion fluorescing under 400 nm ultraviolet light in Telephone Canyon, Death Valley National Park. The photographer writes, "One hypotheses as to why scorpions glow under ultraviolet light is to convert the dim UV light from the moon and the stars into a color they can see: blue green. This may help them hunt insects." ¡¡ → Photography contest closes in 1 week ← !!