tex-latex-face-alist

tex-latex-face-alist is a variable defined in `tex-mode.el'.
Its value is

((italic . "{\\em ")
 (bold . "{\\bf ")
 (italic . "{\\it ")
 (bold-italic . "{\\bi ")
 (underline . "\\underline{")
 (default . "{\\rm "))

Documentation:
Alist of face and LaTeX font name for facemenu.