(sorry for this...I had limited time, close to no resources, oh and BTW the name just spawned randomly in my mind)

Alceida

Wingspan: 55 meters
Weight: 12.000 tons

Abilities:
-Very old, the "mother" of the strange moths in northern Siberia
-Can withstand extre heat and cold
-Absorbs energy all her life
-Immortality, much like Mothra
-Toxic scales from wings
-Energy beam from tail
-Tough exosceleton

Weakness
Power surges, concentrated beams of energy, will grow weak if the is no life around her.

Origin:
The Siberian tundra was inhabited for milenia by a strange, primitive moth species. They seemed to flourish even during the cold siberian wither. The area was also high in radioactive materials reaching dealy amounts of radiation in some areas. Scientist where amazed. They could throw such the moths into fire, liquid nitrogen, etc and it still remained intact. As mineing started in the late 20th century, Alceida was discovered, in her egg form. As the miners brought the egg to the surface, it sarted to glow, finally hatching to a moth the size of a truck. After exiting the mine, she took flinght, and was never seen again...untill late 2007. The arrival of Mirma awoke the giant moth from her sleep. She was ready to figh again!


*Info. If someone doesn`t like the wing paterns feel free to change it. I made it in a hurry*