Please... don't tell me that Tali is a male...
 
Other than that, I agree with you, I want to see how the female Turians and Krogans are.

Maybe they just look and sound the same. Just because human males and females have different characteristics doesn't mean it's the same for aliens. That's just a guess though.

How do you know you haven't seen any female elcor?  And, the Asari should have taught you to move beyond your Earth-centric view of male/female procreation roles. 

I was dissapointed in the lack of seeing a female Krogan (not counting the one you "see" on a mission).  ME1's Codex says that the lack of female Krogans on other planets is because they are kept at home and trying to have as much offspring as possible.  In ME2, we freakin' go to their home planet, and they still aren't anywhere to be seen.

there's a mission to help a female quarian in the citadel, one that isn't tali

 I think you meant Salarian, not Quarian. We totally see lots of Quarian of both genders.
 
Elcor probably aren't real distinct so I don't care. 
 
Krogan, I can sort of believe them being hidden away in a special camp somewhere, whatever. 
 
Salarian females are equally as rare and are treated as royalty so that writes them off
 
But as for Turian..... that's the one that bothers me, I'd really like to see the female counterpart. Especially with the fact that their culture considers both sexes equal. They serve in military positions just the same.
 
edit: Ohhh, also the Volus. Not a word written about their females?

Some good points are made in this thread, but there really is no reason for no female Turians. They're prevalent in pretty much every corner of the galaxy.
 
So all those crying at Obama for cutting back on NASA funding, don't be so eager to get up into space. Turns out it's a real sausage fest.

There is a dead female Krogan in ME2 but she's covered by a tarp lol

The bachelor party turian bitches about there being "few" female turians on the Illium.

" .  edit: Ohhh, also the Volus. Not a word written about their females?"