TAX QUERY
$tax_query = array( 'relation' => 'AND', array( 'taxonomy' => 'familia', 'operator' => 'AND', 'include_children' => true, ), );
$tax_query = array( 'relation' => 'AND', array( 'taxonomy' => 'familia', 'operator' => 'AND', 'include_children' => true, ), );