How can I tell TeamCity where to find the Surefire and Failsafe reports for JUnit?

We recently converted a dual build, dual repo setup to a single mono repo to simplify versioning of our application. Now we just trigger a single script from TeamCity that basically does this

pushd frontend  && npm install && npm test

popd

pushd backend && mvn verify

That's it. TeamCity finds 440 tests, but these are all frontend tests (Mocha framework with teamcity reporter). It does not find the backend tests, which are now to be found in `backend/target/surefire-reports` and `backend/target/failsafe-reports`.

How can I manually tell TeamCity to pick up these test results? I already tried adding these strings to the "Artifact paths:" textfield in the configuration of the build.