†Ypresiomyrma orbiculata Archibald et al., 2006: 492, figs. 2, 16M, 17A (q.) CANADA (British Columbia, Eocene).

Primary type information: Primary type material: holotype queen. Primary type depository: Thompson Rivers University, Kamloops, Canada. Primary type specimen: UCCIPR L-18 F-749 (part) and UCCIPR L-18 F-750 (counterpart).