After Lerner & Mindell, 2005, with species from Sibley & Monroe, 1990, and Peterson, 2002-2004, with Finnish vernacular names from Lokki, Jännes & Nikander, 1992
<==o Circaetinae (Snake eagles; käärmekotkat) |--o Spilornis G.R. Gray, 1840 (harjakotkat) | |?- S. kinabaluensis W.L. Sclater, 1919 (borneonharjakotka) | |?-o S. minimus Hume, 1873 (pikkuharjakotka) | | |-- S. m. minimus (Small Serpent Eagle) | | `-- S. m. klossi (Nicobar Serpent Eagle) | |-- S. elgini (Blyth, 1863) (tummaharjakotka) | `--+-- S. holospilus (Vigors, 1831) (Philippine Serpent Eagle) | `--+-- S. rufipectus Gould, 1858 (celebesinharjakotka) | `--o S. cheela (Latham, 1790) (harjakotka) | |-- S. c. cheela (Crested Serpent Eagle) | |-- S. c. perplexus (Ryukyu Serpent Eagle) | |-- S. c. abbotti (Simeulue Serpent Eagle) | |-- S. c. asturinus (Nias Serpent Eagle) | |-- S. c. sipora (Mentawai Serpent Eagle) | `-- S. c. natunensis (Natuna Serpent Eagle) `--+-- Pithecophaga jefferyi Ogilvie-Grant, 1896 (Philippines Monkey-eating eagle; filippiinienkotka) `--+-- Terathopius ecaudatus (Daudin, 1800) Lesson, 1830 (klovnikotka) `==o Circaetus Vieillot, 1816 (Käärmekotkat) |--+-- Circaetus fasciolatus Kaup, 1847 (pikkukäärmekotka) | `-- Circaetus cinerascens J.W. von Muller, 1851 (jokikäärmekotka) `--+-- Dryotriorchis spectabilis (Schlegel, 1863) Shelley, 1874 (kongonkäärmehaukka) `--+-- Circaetus pectoralis A. Smith, 1829 (Black-chested Snake Eagle) `--+-- Circaetus cinereus (Vieillot, 1818) (ruskokäärmekotkat) `--+?- Circaetus beaudouini J. Verreaux & Des Murs, 1862 [Circaetus gallicus beaudouini] (Beaudouin's Snake Eagle) `-- Circaetus gallicus (Gmelin, 1788) (Short-toed Snake Eagle; käärmekotka)
Reference(s):
- Lerner, H. R. L. & Mindell, D. P., 2005: Phylogeny of eagles, Old World vultures, and other Accipitridae based on nuclear and mitochondrial DNA.
–Molecular Phylogenetics and Evolution: Vol. 37, #2, pp. 327-346 [doi: 10.1016/j.ympev.2005.04.010] - 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 - Peterson, A. P., 2002-2004: Zoonomen Nomenclatural data of Birds. (Updated: 2004-12-24)
–iNet: Zoonomen Nomenclatural data: http://www.zoonomen.net/avtax/frame.html; [visited: 2005-01-21] - Sibley, C. G. & Monroe, B. L., 1990: Distribution and taxonomy of birds of the world.
–Yale University Press, New Haven & London, 1990. xxiv-1111.