
Two male Rhagoletis walnut flies joust on an artificial walnut in a lab cage at the University of Arizona. What's an artificial walnut? It's a painted ping pong ball. As long as the ball is the right color and shape, the flies apparently don't mind.

Biologist Jeremy Davis uses these flies to study the interaction between fruit quality and fly behavioral ecology.

Of course, for the flies it's all about access to females.
Technical details.
top photo: Lens: Canon MP-E 65mm 1-5x macro lens
Body: Canon EOS 20D dSLR
Flash: Canon 550EX flash, indirect
Settings: ISO 200, f/11, 1/200 sec
middle photo: Lens: Tamron 11-18 wide angle zoom
Body: Canon EOS 20D dSLR
Flash: Canon 550EX flash, held overhead
Settings: ISO 100, f/8, 1/250 sec
bottom photo: Lens: Canon MP-E 65mm 1-5x macro lens
Body: Canon EOS 20D dSLR
Flash: Canon 550EX flash, handheld behind leaf
Settings: ISO 200, f/11, 1/200 sec

Ted Kinsman is a scientific photographer that specializes in creating images for books, magazines, and television. His particular areas of interest are in x-ray radiography, high-speed photography, Scanning electron microscopy, and time-lapse cinematography. His work has appeared in numerous books and magazines ranging from Discover Magazine to Forbes. Recently his work has appeared on Gray's Anatomy and CSI New York. In addition to running
B.N. (Bobbie) Sullivan has a strong affinity for the sea and everything in it. She first learned to dive in 1970 and has since logged thousands of dives. A wish to document the marine life she encountered prompted her to learn underwater photography more than 20 years ago. More recently, she began to write about the marine life she has photographed. A research psychologist by profession, she approaches her subject matter with the mindset of a scientist, but targets her writing to a general readership in whom she hopes to foster an appreciation for the ocean and its inhabitants.
B Jefferson Bolender is Training Coordinator of the State of Arizona's
program for disability awareness and assistive technology. Through
her travels she always has a camera at hand to photograph everything
from people to technology and nature. As a teacher of elementary
education, special education and art, her interests include a wide
array of subject matter with an emphasis on documentation with an
artist's eye.
Steve Jurvetson enjoys rocketry and photography and especially the pursuit of both in the Black Rock Desert. Some action photos and video links can be found
Alex Wild is a postdoctoral researcher at the University of Illinois at Urbana-Champaign where he works on the molecular phylogenetics of various groups of insects. He is also a part-time photographer whose images appear in such venues as Ranger Rick, Smithsonian, BBC Wildlife, and even ScienceBlogs.

Comments
Ah, the Ron Prokopy kind of research. I was fortunate to see him speak shortly before he died. One of the people I greatly admire - showed how much one can discover through creative experiments that do not even use electricity, let alone computers or other expensive machines. Decades of painting balls, cutting flowers, etc, taught us an awful lot about Rhagoletis flies in particular, and about insect behavioral ecology in general. He was one of the greats!
Posted by: Coturnix | May 8, 2009 10:56 AM
Rhagoletis pomonella is my second-favorite host-switching insect (after Leptinotarsa decemlineata)!
Posted by: djlactin | May 8, 2009 1:32 PM
Gorgeous, gorgeous, gorgeous photos! I am so happy that this blog was added to the horde. :)
Posted by: ctenotrish | May 8, 2009 5:15 PM
I love it. They look like they're high-fiving.
"Dude! Check out this awesome walnut we just scored! It's off the hizzaay!"
"Dude! Let's throw a kegger!"
"Swwwwweeeeet!"
Posted by: ambivalent academic | May 8, 2009 5:53 PM
I have a general existential question about your photography. You've mentioned that on some traveling trips, you set up a white box in your room and bring specimens back. What happens to those specimens after your photos? Are they already samples you're bringing home? Do you return them to where you found them, shove them out the window, just kill them, or eat them with fava beans?
Posted by: bsci | May 9, 2009 4:46 PM
bsci-
Normally they're pickled and sent to whichever institution is relevant for vouchers (if the material is rare or otherwise noteworthy), or they end up in my own reference collection or released back out to where they came from (the dirt-common insects). Depends a lot on what it is.
Posted by: Alex | May 9, 2009 5:58 PM
Gorgeous, gorgeous, gorgeous photos! I am so happy that this blog was added to the horde. :)
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Gorgeous, gorgeous, gorgeous photos! I am so happy that this blog was added to the horde. :)
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Posted by: metin2 | May 14, 2010 4:08 AM