diff --git a/app/controllers/environment_admin/categories_controller.rb b/app/controllers/environment_admin/categories_controller.rb
index 3881e1d..2debba4 100644
--- a/app/controllers/environment_admin/categories_controller.rb
+++ b/app/controllers/environment_admin/categories_controller.rb
@@ -6,9 +6,14 @@ class CategoriesController < EnvironmentAdminController
     @categories = environment.top_level_categories
   end
 
+  ALLOWED_TYPES = CategoriesHelper::TYPES.map {|item| item[1] }
+
   # posts back
   def new
-    @category = Category.new(params[:category])
+    type = (params[:type] || 'Category')
+    raise 'Type not allowed' unless ALLOWED_TYPES.include?(type)
+
+    @category = type.constantize.new(params[:category])
     @category.environment = environment
     if params[:parent_id]
       @category.parent = environment.categories.find(params[:parent_id])
diff --git a/app/helpers/categories_helper.rb b/app/helpers/categories_helper.rb
index 9dea17d..53003fe 100644
--- a/app/helpers/categories_helper.rb
+++ b/app/helpers/categories_helper.rb
@@ -10,6 +10,11 @@ module CategoriesHelper
     [ N_('Orange'), 4 ],
   ]
 
+  TYPES = [
+    [ _('Categoria Geral'), Category.to_s ],
+    [ _('Product Category'), ProductCategory.to_s ],
+  ]
+
   def select_color_for_category
     if @category.top_level?
       labelled_form_field(_('Display at the menu?'), select('category', 'display_color', CategoriesHelper::COLORS.map {|item| [gettext(item[0]), item[1]] }))
@@ -27,4 +32,9 @@ module CategoriesHelper
     end
   end
 
+  def select_category_type(field)
+    value = params[field]
+    labelled_form_field(_('Type of category'), select_tag('type', options_for_select(CategoriesHelper::TYPES, value)))
+  end
+
 end
diff --git a/app/models/category.rb b/app/models/category.rb
index 3e6995e..b4c5bbf 100644
--- a/app/models/category.rb
+++ b/app/models/category.rb
@@ -8,8 +8,16 @@ class Category < ActiveRecord::Base
   validates_inclusion_of :display_color, :in => [ 1, 2, 3, 4, nil ]
   validates_uniqueness_of :display_color, :scope => :environment_id, :if => (lambda { |cat| ! cat.display_color.nil? }), :message => N_('%{fn} was already assigned to another category.')
 
+  def validate
+    if self.parent && (self.class != self.parent.class)
+      self.errors.add(:type, _("%{fn} must be the same as the parents'"))
+    end
+  end
+
   acts_as_tree :order => 'name'
 
+
+
   def full_name(sep = '/')
     self.parent ? (self.parent.full_name(sep) + sep + self.name) : (self.name)
   end
diff --git a/app/models/product_category.rb b/app/models/product_category.rb
new file mode 100644
index 0000000..077ebe8
--- /dev/null
+++ b/app/models/product_category.rb
@@ -0,0 +1,2 @@
+class ProductCategory < Category
+end
diff --git a/app/views/categories/_form.rhtml b/app/views/categories/_form.rhtml
index 3a99803..6346c75 100644
--- a/app/views/categories/_form.rhtml
+++ b/app/views/categories/_form.rhtml
@@ -1,8 +1,11 @@
 <%= error_messages_for 'category' %>
 
 <% labelled_form_for 'category' do |f| %>
-  <% if @category.new_record? && @category.parent %>
-    <%= hidden_field_tag('parent_id', @category.parent.id) %>
+  <% if @category.new_record? %>
+    <% if @category.parent %>
+      <%= hidden_field_tag('parent_id', @category.parent.id) %>
+    <% end %>
+    <%= select_category_type :type %>
   <% end %>
 
   <%= select_color_for_category %>
diff --git a/test/functional/categories_controller_test.rb b/test/functional/categories_controller_test.rb
index e8bf29f..80bcdbb 100644
--- a/test/functional/categories_controller_test.rb
+++ b/test/functional/categories_controller_test.rb
@@ -39,12 +39,18 @@ class CategoriesControllerTest < Test::Unit::TestCase
     assert_equal 'new name for category', Category.find(cat1.id).name
   end
 
-  def test_new
+  def test_new_category
     cat = Category.new
     Category.expects(:new).returns(cat)
     get :new
   end
 
+  def test_new_product_category
+    cat = ProductCategory.new
+    ProductCategory.expects(:new).returns(cat)
+    get :new, :type => 'ProductCategory'
+  end
+
   def test_new_save
     assert_difference Category, :count do
       post :new, :category => { :name => 'a new category' }
diff --git a/test/unit/product_category_test.rb b/test/unit/product_category_test.rb
new file mode 100644
index 0000000..817369d
--- /dev/null
+++ b/test/unit/product_category_test.rb
@@ -0,0 +1,20 @@
+require File.dirname(__FILE__) + '/../test_helper'
+
+class ProductCategoryTest < Test::Unit::TestCase
+  # TODO: please write tests here when ProductCategory has something
+  def test_require_same_class_for_children
+    c1 = ProductCategory.new(:name => 'Some Product Type', :environment_id => 1)
+    c1.save!
+
+    c2 = Category.new(:name => 'wrong', :environment_id => 1)
+    c1.children << c2
+
+    assert !c2.valid?
+    assert c2.errors.invalid?(:type)
+
+    c3 = ProductCategory.new(:name => 'right', :environment_id => 1)
+    c1.children << c3
+    assert c3.valid?
+    assert !c3.errors.invalid?(:type)
+  end
+end
--
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