From ZooTerms (Dictionary of Invertebrate Zoology)
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teratogyne (noun; Greek teras, monster; gyne, woman): (Arthropoda: Insecta) In Hymenoptera, the aberrant form of female in a Formicidae colony, characterized by overdeveloped legs and antennae, and excess pilosity of the body or defective wings; formerly referred to as beta-females

See also: alphafemale.