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Cysteodemus wislizeni (Meloidae) - photo by Chris Grinter, text by Gwen Pearson


Gwen Pearson



       Атлас экзотических жуков
    Семейство Meloidae (нарывники)



Cysteodemus_wislizeni
U.S.A., Texas, Southwestern Research Station (near San Antonio).
Длина тела - 17 мм
Photo by Chris Grinter (Denver Museum of Nature & Science).
Text by Gwen Pearson - science blogger - from site WWW.WIRED.COM



A Beetle with a Raspberry Beret


 

A great joy of being an entomologist is so many of the little bugs you discover are SHINY. Today's Moment of Nature Zen is a great example; this little beetle is only 1.7cm long (less than an inch), but has enough purple fabulousness on its butt to be a disco ball at a tiny insect dance party.


 

Little insect treasures like this are all around you, if you stop and look.


 


Where does one find shiny purple beetles? I asked Chris Grinter, the collector-photographer of this beetle and Curatorial Assistant at the Denver Museum of Nature & Science. Returning from teaching at the... I didn't wander for more than half an hour."


 

Basically, stop to pee, then look around and find amazing insects. Some basic entomological techniques never change.


 

Why a purple butt beret?
The poofy purple butt-cover is made of the two outer wing covers of the beetle, or
elytra. Ginter said "I don't know the function of the inflated elytra for this species; perhaps all that empty space allows a bit of extra cooling effect? That's a wild guess, but they are seemingly well adapted for walking around at the hottest part of the day... The surface temps of desert sand can approach 175-200ºF, so they must like it hot."


 

That covers why their behind might be round; but why dimply and shiny? Lots of insects are amazingly shiny, and the diversity of ways they create their shine is remarkable. Many of the brightest colored insects don't have pigments - their colors are structural.