async_param.js

var async = require('async');

function copyFileToStructure(filename, done){
  async.parallel([
    async.apply(teste, filename , 'param'),
    async.apply(teste, filename , 'param')
  ], function(result) {
      console.log("poa");
      console.log(done);
      done();
    });
}

var teste = function(var01, var02, cb){
  console.log("teste");
  cb(null);
}

var opa = function(){
  console.log('opa');
}

copyFileToStructure('01', opa);