Programming an ATmega64 with avrdude

Finding that:  avrdude -p m64 -c stk500 -e -U flash:w:obj/flash.srec
gives "avrdude: AVR Part "m64" not found", I checked on Savannah that:

 o I'm using the latest version. (4.2.0)

 o There's no mention of (m64|mega64|ATmega64) in the list archive.

Now I'm wondering if an existing part description is suitable for use
with the ATmega64? (It doesn't seem plausible that I could be the
first to stumble in this direction.)

I can hack the obvious stuff in the avrdude.conf entry for m128, but
half way through it becomes pretty scary.

Erik