Planet Earth

Look at This: Glowing South American Roaches Mimic Toxic Beetles

80beatsBy Veronique GreenwoodAug 23, 2012 2:25 PM

Newsletter

Sign up for our email newsletter for the latest science news
 

Under normal light, this roach looks normal enough. But under a fluorescent light, its three spots---two large ones and one very tiny one just visible under the right spot---light up like a Christmas tree. This remarkable species of South American cockroach, Lucihormetica luckae, owes its fluorescence to bacteria. The spots on the dark brown area of its carapace are pits inhabited by microbes that glow under fluorescent light. A recent analysis

of these creatures' bioluminescence demonstrates that they and their cousin species glow at the same wavelengths as a toxin-producing beetle that lives in their area, suggesting that the roaches are mimicking a deadly neighbor to avoid getting picked off by predators. However, it may not be predators these roaches need to worry most about: it's habitat destruction. No specimens have been found since the volcano they live on erupted two years ago. Image courtesy of Vršanský et al., Naturwissenschaften (2012)

1 free article left
Want More? Get unlimited access for as low as $1.99/month

Already a subscriber?

Register or Log In

1 free articleSubscribe
Discover Magazine Logo
Want more?

Keep reading for as low as $1.99!

Subscribe

Already a subscriber?

Register or Log In

More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Join
Our List

Sign up for our weekly science updates.

 
Subscribe
To The Magazine

Save up to 70% off the cover price when you subscribe to Discover magazine.

Copyright © 2021 Kalmbach Media Co.