Welcome to the Home of…
Project: 

Length:      180 Meters  Weight:     20,000 Tons
Wingspan: 250 Meters   Air Speed:    Mach 3

Special Weapons:
  Gives Off Poisonous Yellow Dust
  Emits Rays From Antennae
  Discharges Lightning Bolts from Wings
  Can block Godzilla's radioactive breath ray
  Telepathic

Film Appearances:
     Mothra (1961)
     Godzilla Vs. Mothra (1964)
     Ghidrah, The Three-Headed Monster (1964)
     Godzilla Vs. The Sea Monster (1966)
     Destroy All Monsters (1968)
     Godzilla Vs. Mothra (1992)
     Godzilla Vs. SpaceGodzilla (1994)

                                                                                                                    Figure 1.  Scale model of Mothra's daughter.  (Thanks to Kaiju Girl, founder of the Mothra Religion for correcting my earlier caption.)

Origin:
     Mothra's origin is not well known. She was the guardian of an ancient race of tiny humanoids named the Cosmos who lived on earth. The Cosmos civilization became very advanced but the Zen of Earth Lifeforce created Battra to kill Mothra and wipe out the Cosmos. Although Mothra defeated Battra, the civilization of the Cosmos still crumbled and Mothra lay dormant for many years. In 1992 she hatches from an egg when Godzilla and Battra threaten Japan.   (Note:  Mothra maintains a close telepathic contact with two small fairies. Its behavior patterns and communication abilities indicate an above average level of intelligence.)

Figure 2.  Mothra destroying Godzilla with her  trademark poisonous yellow dust.
The colors in this picture reflect those of reality.
 
 

NOTE:  The true nature of this project is both ground-breaking AND top secret.  Thus the obvious call for the above cover-up.