This afternoon our regular tipster just banged on my door and unloaded a bunch of casting for Dimension Films’ Piranha 3D, which begins lensing next month in Arizona under the direction of Alex Aja. Read on to see who will be joining the previously announced Elisabeth Shue, Adam Scott, Ving Rhames and Richard Dreyfuss in the forthcoming reboot that takes place in Lake Havasu, Arizona, where a tremor causes the lake’s floor to open, setting free scores of prehistoric piranhas… Pictured: Dina Meyer

Bloody-Disgusting learned exclusively this afternoon of the following casting for Piranha 3D.

First, Dina Meyer, who you might remember as “Kerry” in Saw II-IV, will be playing “Paula”.

The young Brooklynn Proulx will play “Laura”.

Quinn Lord, who you’ll see as “Sam” in Trick ‘r Treat later this year and in Joe Dante’s The Hole, stars as “Zane”.

Lastly, Riley Steele rounds out the cast as “Crystal”.

Elizabeth Shue will play Sheriff Julie Forester, Ving Rhames will play “Fallon” and Adam Scott takes on the character “Novak.” The legendary Richard Dreyfuss cameos.

Here’s the synopsis being used at this time: They’re back! Every year the population of sleepy Lake Havasu explodes from 5,000 to 50,000 for a single, wild weekend – the 4th of July, a riot of sun, drunken fun and sex-crazed mayhem. But this year, there’s something more to worry about than hangovers and complaints from local old timers. Havasu sits in the crater formed by a prehistoric volcanic eruption, and when earth tremors tear open a crack in the lake floor, all hell breaks through. Piranhas – a million ravenous, razor-toothed monsters, unchanged since the dawn of time. Unstoppable killing machines acting blindly under one primeval impulse: to hunt down anything that moves and strip it to the raw, bleeding bone. In seconds.

Piranha hits theaters March 19, 2010.