Otte, Daniel / Poole, Robert W. and Patricia Gentili, eds.
Journal/Book Name, Vol. No.:
Nomina Insecta Nearctica: A Check List of the Insects of North America: vol. 4: Non-Holometabolous Orders
Entomological Information Services
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Apparently a 'pseudohomonym' of (same kingdom but rank not covered by Nomenclatural Code, same name as) hummingbird genus Ensifera Lesson, 1843 (TSN 555703)
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