I do less work than most, Im sure it was humor, but...............
No 1. Dont use the 'there are too many women here as an excuse"
In the world we live in you will have both, and if you dont like it you will have a hard time anywhere. Now if they cant do the job, you may have a case. Since this employee is new, I will warn him, we are used to condescending mannerisms, and you will be found along the road and torn to shreads, so tread lightly

There are good women and good men, we are all here for the same reason. To do a job, and make money for our families.