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Odontotaenius sp
This beetle is quite large. It measures around 1.25" long. It was attracted to a a street light.
Tropical dry forest in NW Costa Rica 9 week into the 6 month dry season
Duly noted. I checked out your references among others and they looked spot on. I am no expert so the minute differences that really count go beyond me. Changes made. Thanks!
I did some more searching and I'm not sure that this is O. disjunctus anymore. BugGuide indicates that there are about 500 species known from the Family Passalidae, most of which are found in the tropics. Sorry I can't help ID this guy past the family right now, but at least the common name applies to the whole family :)