Repost: Answer!

This handsome is Wedge-Shaped Beetle (Family: Ripiphoridae, Genus: Ripiphorus) male.

* The family Ripiphoridae (formerly spelled Rhipiphoridae) is a cosmopolitan group of beetles commonly known as wedge-shaped beetles containing some 450 species. They are one of the most unusual beetle families, in that they are parasitoids—different groups within the family attack different hosts, but most are associated with bees or vespid wasps, while some others are associated with roaches. They often have abbreviated elytra, and branched antennae. (Wikipedia)

Read more : http://www.tightloop.com/ants/rhipiphorid.htm  

and     http://eol.org/pages/8609/overview

entomolog:

Let’s play the game! Who is this guy?

(photo by adegsm@ on Flickr)