Arachnia is the queen of the Planet Insectia and the main antagonist of Fullmetal Alchemist: Reborn. She is modeled after a Goliath Birdeater. 

Arachnia (FMA)
Vital statistics
Aliases Mother, Overgrown Bug
Birthplace Insectia
Date of Birth Unknown
Age Unknown
Family Unknown
Affiliations Unknown
Alignment Unknown
Species Insectian
Occupation Galactic Warlord
Rank Queen Of Insectia
Abilities Unknown
Power Level Unknown
Weapons Large fangs
Unique Trait Both a mothership and an Insectian
Goal Rule the universe
First Appearance Unknown
Voice Actor Linda Young (FUNimation Dub)

Diane Salinger (Saban Dub)

Seiyū Unknown