The International Commission on Zoological Nomenclature has used its plenary power to resolve the homonymy between the family names Photinini LeConte, 1881 for a group of lightning bugs and Photininae Giglio-Tos, 1915 for a group of praying mantises by ruling that the stem of the generic name PhotinaBurmeister, 1838 for purposes of Article 29 of the Code is Photina-, thereby emending the mantis subfamily name to Photinainae Giglio-Tos, 1915. The Commission has further ruled under the plenary power that Photinus pallensFabricius, 1798 is both a justified emendation of P. pullensFabricius, 1798 and the type species of PhotinusLaporte, 1833, and that Mantis vitreaBurmeister, 1838 is available despite being a junior primary homonym of M. vitreaStoll, 1813.