Pyrrhocoridae, most probably Fibrenus sp., assuming this taxon is still valid:
http://130.235.11.35/search.php?taxa=Pyrrhocoridae&sort=1&country=Colombia&collection=1
http://www.imdap.entomol.ntu.edu.tw/StudySample.php?SSindex=SSindex&L=C&item=12870&SSOrder=SS_Class%20desc%20,%20SS_Class%20desc
http://www.ncbi.nlm.nih.gov/pubmed/23949857
My closest guess are Fibrenus globicollis or Fibrenus gibbicollis (see link above).
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