The Deadly Mantis

Continuity mistake: At one point, the gigantic title character knocks over a city bus. For a moment, the word TONKA can be seen on the underside of the vehicle.

Dr. Ned Jackson: I'm convinced that we're dealing with a Mantis in whose geological world the smallest insects were as large as man, and now failing to find those insects as food, well... it's doing the best that it can.

Dr. Ned Jackson: In all the kingdom of the living, there is no more deadly or voracious creature than the Preying Mantis.