There are three possibities asergio. A click beetle (Elateridae) http://www.123rf.com/photo_12052771_click-beetle-elateridae-with-large-feathered-antennae-probably-is-a-male-who-uses-these-antennae-to-.html or a (Rhipiceridae) cicada eating beetle http://www.opsu.edu/Academics/SciMathNurs/NaturalScience/PlantsInsectsOfGoodwell/rhipiceridae/cedarb.html http://www.whatsthatbug.com/2011/03/12/beetle-from-malaysia-might-be-click-beetle/ http://www.flickr.com/photos/doc44/7073119507/ or probably a firefly. This one is closest http://bugguide.net/node/view/195105
Remembers me of a Lampyridae, Firefly. But there are even longhorn beetle which mimics fireflies (your is definitely not a beetle!). I only know Photinus sp. from Costa Rica.
Comments (8)