Male terminalia of E. simillima (paratype. Mexico: Chihuahua, Barranca del Cobre, KUNHM-ENT 0504566). 73 Seventh metasomal sternum in ventral view 74, 75 Eighth metasomal sternum in ventral and lateral views 76–78 Genital capsule in dorsal, ventral, and lateral views.

  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.