Monster From Green Hell (1957) (35mm Color Sequence Upgrade)

The U.S. government conducts experiments on the effects of exposure to space radiation by sending animals briefly into orbit. Following a malfunction, one of the rockets stays in space longer than planned and is lost from the scientists' radar screens. Later, Dr. Brady (Jim Davis), one of the rocket scientists, reads a news report about strange occurrences in Central Africa. Theorizing that it may be the irradiated test wasps wreaking havoc in the jungle, he organizes an expedition to investigate. Also stars Robert Griffin, Joel Fluellen. Also with Barbara Turner.

NOTE: This film came from an excellent 35mm upgrade print, which also includes the rare color sequence ending that has not been seen in any other version for several decades.