Male holotype of E. engeli (except paratype in Fig. 103, KUNHM-ENT 0504531). 100 Facial view 101 Dorsal habitus 102 Lateral habitus 103 Outer view of hind leg 104 Dorsal view of mesoscutellum 105 Second metasomal tergum.

  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.