Double Crested Longicorn from Brazil

Subject:  Beetle Attached Photo
Location:  Serra dos Órgãos National Park, Rio de Janeiro, Brazil
Date:  September 21, 2017
Hi there
Can you please advise what species is this ?
It was seen in the Serra dos Órgãos national park in Rio de Janeiro state Brazil.
I was fascinated by the way the antennae were laid across the back and was unable to find anyone that could identify it.
Your assistance would be greatly appreciated.
Many thanks
Séamus O’Malley

Double Crested Longicorn

Dear Séamus,
This is an unusual double crested Longicorn in the family Cerambycidae, and we eventually located it on Insetologia where it is identified as
Hypselomus cristatus.  Additional images can be found on Cerambycidae of the World.  According to Oncid ID:  “The combination of the following characters will help to distinguish this genus: large eyes; narrowly separated antennal tubercles, contiguous at base; bowed scape, gradually expanded to apex; and base of elytra with two longitudinal, arcuate, strongly elevated crests, each crest studded with several round, shiny tubercles.”

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