We found this beetle near Blanchiseusse road in Trinidad in late April last year. It is 6-7 cm in length. Can anyone identify it? We have searched the internet and can not identify it. It has one large horn on the top of its head and two smooth sickle shaped horns or mandibles on the bottom of its head. It is three quarters the size of a Hercules beetle and is found in similar habitat.
I'm pretty sure this is one of the rhino beetles.
I would lean towards Xylotrupes, but it is not meso-American...
Second choice: Dynastes, but I can't find a good match...
Somebody else has photographed a very similar one, but seems not to have ID'd it
Thank you for your informative reply, at least now I feel we are going in the right direction as regards ID. I'm no expert with entomology Mike, as you may have guessed, but I agree that it is most likely a large Rhinoceros Beetle. The unidentified beetle you highlighted in your link is the only other shot of a similar species I have seen with the two horns below and one above. Such a shame he/she didn't identify his either. I have found many on the internet that have a single horn/mandible (what is the correct term for this feature) below that is forked, but not with two separate horns/mandibles as in our beetle. Also I may have underestimated the size, being someone who thinks in inches rather than centimetres. Sitting next to a ruler now, I can confirm that the creature was at least 8cm and more. Could it be a new species? Hoping more people can take a look at it and offer a few more clues. Otherwise, who knows, we may have found one new to science, although I doubt that, with it being such a large one.
I suggest you contact one of the authors of this paper
Stewart B. Peck, Joyce Cook, Jerry D. Hardy Jr.
'Beetle fauna of the island of Tobago, Trinidad and Tobago, West Indies'
Insecta Mundi Vol. 16, No. 1-3, March-September, 2002.
If you note the abstract on that page:
"Tobago is a biologically rich but poorly investigated island. In this paper we report the occurrence of 672 species of beetles representing 69 families. Of these, only 95 had been previously reported from the island."
Though that is the adjcent island, it shows there is a lot of under-recording of beetles thereabouts.
It would be nice to think that your beetle is included in that paper, and it may be. But it would appear that Dynastes is unlikely, as the only D. recorded therein is D. hercules (yours is very different to that).
Stewart's email: firstname.lastname@example.org
Keep us posted.
Oh, it is a male, BTW, as you probably figured-out.
Thank you Mike, I will do and hopefully, report back with their reply. Thanks for the links and your time.