Aug 19 (Reuters) - Westpac Banking Corp WBC.AX :
* Westpac responds to BBSW US class action
* Westpac has not been formally served with any proceedings
* Aware that class action has been filed in New York against it in respect of the Australian BBSW interest rate benchmark
* Westpac denies the allegations in claim and, if served with the claim, will defend those allegations vigorously
* Source text for Eikon