Dance punk was first used in the early 80s (possibly in Great Britain) as a term used for post-punk groups with a slower, more rhythmic tempo which made it easier to dance to. The bands then could have had influences from disco, funk, and any other dance music popular at the time. Bands such as Public Image Ltd. and The Clash were known to have been referred to as dance punk at times. As techno became popular in the 80s and 90s some punk/post punk bands became influenced by this genre. Around this time the few (if any) dance punk like bands were labeled punk-funk. All of this leads to the dance punk of today, spearheaded by LCD Soundsystem, !!!, The Rapture, and many others.
A recent British off-shoot of this branch is the newly-coined term new rave. This genre includes such acts as Klaxons, New Young Pony Club, and SHITDISCO. It has been suggested, however, that new rave is the invention of British publication NME(among others). Indeed, it is questionable whether or not there is an appreciable difference between new rave and dance-punk.
disco punk has been dead since the 80s.