The Glowing Eggs of Semionellus placidus
When I need to talk to someone about a facet of Entomology that blows my mind, I've taken to mentioning millipedes. I've been keeping millipedes as a labor of love over the past year, which is something that has taught me a lot. Probably the coolest thing I've learned about is some species' propensity to fluoresce under ultraviolet light. I've chronicled my previous experiences with a millipede species that fluoresces under ultraviolet light previously here and here , so if you want a primer about Semionellus placidus , check out those posts. I've established that this species fluoresces under UV light quite nicely, and I've found it in the field from spring until fall. It also appears to be quite abundant (in southeastern Ohio, at least) and lights up the leaf litter whenever I'm looking for it. UV fluorescence in arthropods isn't anything new: it's been reported most notably in scorpions, many insects, and some other millipede species. A few m...