Shaw 2007. A new species of Elasmosoma Ruthe (Hymenoptera: Braconidae: Neoneurtnae) from the northwestern United States associated with the western thatching ants, Formica obscuripes Forel and Formica obscuriventris clivia Creighton (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington, 109(1), January 2007: 1-8