Certainly, there are females among the other races. The report on the mission "Thorny Dreams":
The bangaa girl "Eleono" ssleepss in the Thoussand-Thorn Wood. Looking for a clanner to find out why she ssleepss.
Vajiri, Bangaa.

While I believe that is the only one which states it definitely enough to be considered proof, several other missions hint at females among the other races.

Why, then, are there none in your clan (and no male Viera, either)? My guess is that the laws prevent any females from the other races and any male Viera from engaging.