User blog comment:Ralok/Need help compiling a list of feminine Alien Races/@comment-1197011-20161129022848

Sadly, actual examples of this are hard to find in fiction, even though all-female species definitely exist in real life.

But let's see, the Ukkans from K9 are a case of this.

I can also think of the Riim (asexual, but described as feminine looking) from Voyage of the Space Beagle.

The J'naii from Star Trek are genderless, but are all played by actresses. Hermats are hermaphrodites and look more like women (although with masculine features).

The Lunites from The League of Extraordinary Gentlemen are a pastiche of the once-common trope of "all-female race whose males have died out". Other examples of this include films like Fire Maidens from Outer Space and Devil Girl from Mars (though in both cases the males haven't died out completely). The Venusian cannibal women from The Three Stooges may also be an example.

Then there's the Drahvins, who basically kill their males, keeping only a few alive for reproduction.

Alpha Centaurans are hermaphrodite and look like giant invertebrates, but they certainly sound like girls. Not sure if that counts.

Decoys are an... unclear case, but there's probably a reason they only seek male victims to impregnate.

Maybe worth-noting case with the Chirpsithra (males do exist, but no one has ever seen one). Also, the Cygnans from The Jupiter Theft are female with a small parasitic male attached to the torso.

And on a side note, if you can accept Earth species, the Mothras are definitely all-female and parthenogenic.