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Horned passalus beetle

Description:

Nearly all of the 500-odd species are tropical; species found in North America are notable for their size, ranging from 20–43 mm, for having a single "horn" on the head

Notes:

I don't even know where to start to find the correct species.

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DaneRiva
Spotted by
DaneRiva

San José, San Jose, Costa Rica

Spotted on Jan 9, 2012
Submitted on Jan 26, 2012

Reference

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