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Pablo Yáñez | all galleries >> It's Alive >> Macro >> Bees, Beetles, and Other Bugs > Bug Hebbie Jeebies
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01-OCT-2007 Pablo Yáñez

Bug Hebbie Jeebies

Williamsburg, Va

Most likely a Nicrophorus tomentosus --

We originally though it came in to our house with our mail (that is were we first noticed it). Didn't figure this one out until a fellow photographer, Sean Carpenter, got me started on the right path to "id'ing" it. These are a type of burying beetle (aka carrion beetle), having identified it, it made more sense having it in the house ... we had been gone for a long weekend, when we came back we had the most HORRIBLE smell in the house -- probably due to a dead bird/squirrel in the chimney flu (we're still working on this - YUK!!!) and the smell may have attracted this guy to the house?

In any case, he seemed to be really "freaked" out trying to rub his face clean. I couldn't quite make out what the problem was until I looked at the macros on the big computer screen... it turns out that these mites are fairly common on beetles, which are used as a sort of transport by the mites (called phoresy I believe)

See more of this type by clicking on the icon below:

Canon EOS 30D ,Canon EF-S 60mm f/2.8 Macro USM
1/250s f/13.0 at 60.0mm iso200 full exif

other sizes: small medium original auto
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Pablo Yáñez03-Oct-2007 06:02
Thanks Sean!

The last update... based on extensive research (well 20 minutes on Google actually) I'm going to say that the mites are "Poecilochirus" -- these are very common on our friends Nicrophorus tomentosus.

The cool thing (in a pretty disgusting way) is that the mites apparently hitch hike between carcasses using the beetles. Once they arrive at the new "recently departed" they feast on the eggs of certain carrion flies which compete with the beetle's own young for food. So in exchange for supplying the ride, the beetle's own larvae get more food.

Wow!
Sean Carpenter02-Oct-2007 18:41
Check out Bob's comment on my picturehttp://www.pbase.com/carpents/image/67364708 - this is a freak symbiotic relationship. Nature sure is strange.