Category Hierarchy in Subcategories?

When i click on a category link, it uses category.php

But i’d like certain (sub)categories to have different templates, but in this case i can’t becuase category.php is used for sub-categories. I could create templates for each subcategory, but i’d have to add a new template every time i add a new subcategory.

How can i create a “parent” template for subcategories, or be able to use some if/else in category.php ?

The query_string when i request a subcategory is:

category_name=model-look%2Fnoticias

that being “model-look” as parent and “noticias” its child.

I wonder how can i “detect” model-look or other parent category and then do this or that as template…