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Bess BeetlesCeruchus???
Dear Bugman…
I found this big guy (around 4cm long) in rotten wood, in tropical forest (around 1000m elev, Thailand)… Is it a Ceruchus? Thank you in advance for your help and website, great idea!
Gilles
Hi Gilles,
This looks to us to be a species of Bess Beetle in the family Passalidae. Bess Beetles or Bessbugs are interesing beetles. They have a semi-social structure with adults and larvae living together in rotten wood. The adults feed the larvae pre-chewed wood. Both adults and larvae are capable of stridulation, or making sounds.
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