“Male” is the word, and it is used in lots of books in exactly the same way as it’s being used here.
I have read tons of books that said something along the lines of “he was an excellent male specimen” or “a member of the male species”
Using the word female/male has a specific effect on the way the sentence reads, it gives it a clinical feel and is very useful. Rewriting usages to the approved, politically correct, version just smacks of 1984 style newspeak.
The right example would be "He was a boisterous male."