Blera scitula (English Wikipedia)
Analysis of information sources in references of the Wikipedia article "Blera scitula" in English language version.
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archive.org
- Williston, S. W. (1887). "Synopsis of the North American Syrphidae". Bulletin of the United States National Museum. 31: xxx + 335. Retrieved 1 July 2015.
This article incorporates text from this source, which is in the public domain.
biodiversitylibrary.org
- Williston, Samuel Wendell (1882). "Contribution to a monograph of the North American Syrphidae". Proc. Amer. Philos. Soc. 20 (112): 299–332. Retrieved 23 July 2021. This article incorporates text from this source, which is in the public domain.
- Curran, Charles Howard (1925). ""Contribution to a monograph of the American Syrphidae north of Mexico"". The Kansas University Science Bulletin. 15: 7–216. This article incorporates text from this source, which is in the public domain.
- Metcalf, C.L. (1921). "The Genitalia of Male Syrphidae". Annals of the Entomological Society of America. 14: 169–266.