Entity Framework 6 - Map only one statement to Stored Procedure

I am mapping an entity to insert to stored procedure like this:

modelBuilder  
  .Entity<Member>()  
  .MapToStoredProcedures(s =>  
       s.Insert(u => u.HasName("stp_insert_member")));

The insert works great and passes all parameters to the stored procedure when I save new member.

But what happens when I try to update a member (loading entity from db by id, changing it's properties, and saving again - what will issue the update statement) is I get an exception because it's looking for stored procedure named Member_Update.

But for that (and for delete), I don't want to have stored procedures. I just want to execute a stored procedure for the insert statement.

Can I map EF to a stored procedure for just the insert action?