The Warner Bros. contract player also appeared in several Westerns and was a standout in the world of musical theater.

Joan Weldon, the actress and singer dubbed “filmdom’s fairest exterminator” after her turn as a young scientist investigating giant, radiation-mutated ants in the 1954 sci-fi classic Them!, has died. She was 90.

Weldon died Feb. 11 at her home in Fort Lauderdale, Florida, her family announced.

A onetime contract player at Warner Bros., Weldon during her heyday appeared in several Westerns, including The Stranger Wore a Gun (1953) and Riding Shotgun (1954) opposite Randolph Scott; The Command (1954) with Guy Madison; Gunsight Ridge (1957) alongside Joel McCrea; and Day of the Badman (1958) with Fred MacMurray.

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Source: Joan Weldon Dead: Actress Pursued by Giant Ants in ‘Them!’ Was 90 | Hollywood Reporter