Image 1: A dish of millipedes under UV light. Most of the ones fluorescing in blue are Semionellus placidus, while the two fluorescing red are Pseudopolydesmus serratus. Red fluorescence under UV hasn’t been reported before in arthropods, to my knowledge.”

Photos by Derek Hennen. Check out his blog post for more field notes and details on identification!

Image 2: Semionellus placidus, photo by Derek Hennen (source)

 

Gonodactylus platysoma, UV-excited fluorescence

From http://arthropoda.southernfriedscience.com/?p=2592 : 
I talked previously about fluorescence in stomatopods here. However, I don’t know if the patterns on G. platysoma are used to amplify any particular signals. These animals live in shallow water and would have less use for fluorescent signal amplification.”

Via Coral Morphologic
The cephalothorax of this unidentified pycnogonid is covered in wisps of  cyanobacteria (perhaps as camouflage) which itself fluoresces orange-red. This specimen measures about 1 cm in diameter. Fluorescence photograph.

The pycnogonid in this short video also appears to be fluorescent: http://www.youtube.com/watch?v=vA5xAnPPNnA

https://en.wikipedia.org/wiki/Sea_spider

Mitosis II in Drosophila melanogaster embryo

Fluorescent microscopy image of a Drosophila melanogaster embryo, 160x magnification. Green is DNA in mitosis, red is a nuclear protein.”

“This fruitfly embryo is expressing a green fluorescent protein attached to a histone (one of the proteins DNA wraps around). The red staining is done by using an antibody staining. This image was taken with a wide field fluorescent microscope.”

KarinOnFlickr: http://www.flickr.com/photos/karinonflickr/2530982134/in/gallery-gmacqueron-72157624995046534/