Zend Acl Issue When Using With Modules, Controllers And Actions

Question

I have the a modular zend application which has the following modules, controllers and actions

Default Module
        Index Controller
        actions : index,login,logout
    Site Controller
        actions : index,cars,trains
Member Module
    Index Controller
        actions : index,login,logout
    Account Controller
        actions : index,profile,password
Admin Module
    Index Controller
        actions : index,login,logout
    Configuration Controller
        actions : index,pages,users

Now In my Zend Acl Plugin I am adding the modules and controllers as resources using the following code

<?php
$acl = new Zend_Acl();
$acl->add(new Zend_Acl_Resource('index')); //for default module
$acl->add(new Zend_Acl_Resource('site')); //for default module

$acl->add(new Zend_Acl_Resource('admin'));
$acl->add(new Zend_Acl_Resource('admin:configuration'),'admin');
$acl->add(new Zend_Acl_Resource('admin:index'),'admin');

$acl->add(new Zend_Acl_Resource('member'));
$acl->add(new Zend_Acl_Resource('member:account'),'member');
$acl->add(new Zend_Acl_Resource('member:index'),'member');
?>

But this is giving the following fatal error: Fatal Error: Uncaught exception 'Zend_Acl_Exception' with message 'Resource 'default:index' not found'