Male mesotibia. 4 E. barthelli (holotype) 5 E. engeli (paratype, KUNHM-ENT 0504531) 6 E. micheneri (paratype. Mexico: Jalisco, Mascota, KUNHM-ENT 1121713).

  Part of: Gonzalez VH, Griswold T, Simões M (2017) On the identity of the adventive species of Eufriesea Cockerell in the USA: systematics and potential distribution of the coerulescens species group (Hymenoptera, Apidae). Journal of Hymenoptera Research 55: 55-102.