diff --git a/src/gt4py/next/iterator/transforms/global_tmps.py b/src/gt4py/next/iterator/transforms/global_tmps.py
index db12ba13ed..6d39fc376d 100644
--- a/src/gt4py/next/iterator/transforms/global_tmps.py
+++ b/src/gt4py/next/iterator/transforms/global_tmps.py
@@ -93,19 +93,13 @@ def _transform_by_pattern(
             domain_expr = domain.as_expr()
 
             assert isinstance(tmp_expr.type, ts.TypeSpec)
-            tmp_names: str | tuple[str | tuple, ...] = type_info.apply_to_primitive_constituents(
-                lambda x: uids.sequential_id(),
-                tmp_expr.type,
-                tuple_constructor=lambda *elements: tuple(elements),
-            )  # TODO: how should tuple_constructorb e handled?
-
-            tmp_dtypes: ts.ScalarType | tuple[ts.ScalarType | tuple, ...] = (
-                type_info.apply_to_primitive_constituents(
-                    type_info.extract_dtype,
-                    tmp_expr.type,
-                    tuple_constructor=lambda *elements: tuple(elements),
-                )
-            )  # TODO: how should tuple_constructorb e handled?
+            tmp_names: str | tuple[str | tuple, ...] = type_info.type_tree_map(
+                result_collection_constructor=lambda elements: tuple(elements)
+            )(lambda x: uids.sequential_id())(tmp_expr.type)
+
+            tmp_dtypes: ts.ScalarType | tuple[ts.ScalarType | tuple, ...] = type_info.type_tree_map(
+                result_collection_constructor=lambda elements: tuple(elements)
+            )(type_info.extract_dtype)(tmp_expr.type)
 
             # allocate temporary for all tuple elements
             def allocate_temporary(tmp_name: str, dtype: ts.ScalarType):