After Olson, 1985, and Sibley & Monroe, 1990
<==o Asio Brisson, 1760 (sarvipöllöt) |--o A. otus (Linnaeus, 1758) (sarvipöllö) | |-- A. o. canariensis Madarasz, 1901 | |-- A. o. otus (Linnaeus, 1758) | |-- A. o. tuftsi Godfrey, 1948 | `-- A. o. wilsonianus (Lesson, 1830) |--o A. stygius (Wagler, 1832) (tummasarvipöllö) | |-- A. s. barberoi W Bertoni, 1930 | |-- A. s. lambi RT Moore, 1937 | |-- A. s. noctipetens Riley, 1916 | |-- A. s. robustus L Kelso, 1934 | |-- A. s. siguapa (Orbigny, 1839) | `-- A. s. stygius (Wagler, 1832) |--o A. abyssinicus (Guerin-Meneville, 1843) (afrikansarvipöllö) | |-- A. a. abyssinicus (Guerin-Meneville, 1843) | `-- A. a. graueri Sassi, 1912 |-- A. madagascariensis (A Smith, 1834) (madagaskarinsarvipöllö) |--o A. flammeus (Pontoppidan, 1763) (suopöllö) | |-- A. f. bogotensis Chapman, 1915 | |-- A. f. cubensis Garrido, 2007 | |-- A. f. domingensis (Statius Muller, 1776) | |-- A. f. flammeus (Pontoppidan, 1763) | |-- A. f. galapagoensis (Gould, 1837) | |-- A. f. pallidicaudus Friedmann, 1949 | |-- A. f. ponapensis Mayr, 1933 | |-- A. f. portoricensis Ridgway, 1882 | |-- A. f. sandwichensis (A Bloxam, 1827) | |-- A. f. sanfordi Bangs, 1919 | `-- A. f. suinda (Vieillot, 1817 `--o A. capensis (A Smith, 1834) (afrikansuopöllö) |-- A. c. capensis (A Smith, 1834) |-- A. c. hova Stresemann, 1922 `-- A. c. tingitanus (Loche, 1867)
Reference(s):
- Lokki, J., Jännes, H. & Nikander, P. J., 1992: Otavan lintutieto.
–Kustannusosakeyhtiö Otava, Helsinki, Finland, 1992, pp. 1-440
Translated from: Perrins, C. M. (ed.), 1990: The Illustrated encyclopaedia of birds.
–Headline Book Publishing Plc., London, England, 1990 - Olson, S. L., 1985: The fossil record of birds. 79-239.
in Farner, D., King, J. & Parkes, K. (eds.), 1985: Avian Biology. vol VIII.
–Academic Press, New York. 1985. - Peterson, A. P., 2002-2011: Zoonomen Nomenclatural data of Birds. (Updated: 2011-10-16)
–iNet: Zoonomen Nomenclatural data: http://www.zoonomen.net; [visited: 2011-12-19] - Sibley, C. G. & Monroe, B, L., 1990: Distribution and taxonomy of birds of the world.
–Yale University Press, New Haven & London, 1990. xxiv-1111