Accipitridae

Accipiter virgatus vanbemmeli
Voous, 1950b: 99

Besra
1 holotype

Holotype: ZMA 2589, adult male, Berastagi (1450 m, N of Lake Toba, N Sumatra, Indonesia), collected 28 Mar 1914 for L.P. le Cosquino de Bussy (coll. nr. 110a); wing 159, tail 120, bill to cere 10.7, tarsus 45.2.

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Additional information
Voous (1950b) lists 11 further birds (2 adult males, 3 adult females, 6 immatures), all of which can be considered as paratypes, but does not mention details of these. As birds from the RMNH, MZB, AMNH, and MCZ were examined for his study, the paratypes of vanbemmeli are among these collections. This form is close to rufotibialis from Borneo, but the underparts are purer rufous, less vinous.

Measurements
As far as types in the ZMA are concerned, all measurements were taken by C.S. Roselaar, unless otherwise noted, using the methods as described in Svensson (1992) and comparable with the data published in the Handbook of Western Palearctic Birds. All are in mm, and are given to the nearest mm when taken with a ruler and to one-tenth of a mm when measured with calipers.

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