Zaterrealm was destroyed, not invaded and taken the control like Edenia. And Reptile was the only survivor from his race. But later, we saw Chameleon and Khameleon from Reptile's homeland. So he is not last.
The last time we see on main games this insect reference is in MK in the Beetle Lair.
That building was rosen in honor of the Death Knight, a demi-god warrior.
Beetles and bees are not that close, but D'vorah uses this "deathlike style", and if we pay attention, she got a beetle like amulet on her chest.
There already were bee-like creatures in Mortal Kombat Conquest TV series, but they didn't have wings. Queen Kreeya, her treacherous daughter Vorpax, and other Kreeyans - Amazons born in bees nests. Also they were killing partners after sexual acts like real bees do.
I know Vorpax has been killed in the last episode of MK Conquest, so many years before events in Mortal Kombat 1 (original timeline) and Mortal Kombat 9 (alternative timeline). Kreeya is no more, Vorpax is no more, but what about other Kreeyans? Maybe another Kreeyan took the lead and "bee-like" Amazons continue their conquering the Realms.
I'm not sure D'Vorah is Kreeyan, but I have no idea why Mortal Kombat has new character somehow related with bees.
Bees don't murder other bees after sex. The male Bee's testicles explode. I shit you not.