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Photo#298285
Large black beetle protruding striped abdomen - Prionus laticollis

Large black beetle protruding striped abdomen - Prionus laticollis
East Hampton, Suffolk County, New York, USA
July 2, 2009
Size: approx 40 mm
Found dead, floating in swimming pool skimmer

Images of this individual: tag all
Large black beetle protruding striped abdomen - Prionus laticollis Large black beetle protruding striped abdomen - Prionus laticollis

May not be dead.
Insects that have "apparently" drowned have a way of resurrecting themselves, so give her time....This is a female broadnecked root borer, Prionus laticollis. Despite their size they are harmless. The larvae bore in tree roots but apparently do minimal damage.

 
Harmless in the sense of not being dangerous and aggressive,
but if carelessly handled, they can give quite a pinch with their mandibles.

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