. Bulletin of the British Ornithologists Club. Jon Fjeldsa & Jacob Kiure 53 Bull. 2003 123(1). Figure 1. Portraits comparing Xenoperdix specimens from the Udzungwa Mts (based on ZMUC ) and Mafwemiro Forest (ZMUC ). Xenoperdix udzungvoensis obscurata^ subsp. no v. Holotype The Zoological Museum University of Copenhagen (ZMUC) cat. no. Sex not determined. Collected 29 December 2000 in Mafwemiro Forest (6°50'S 36°34* E), which covers the top plateau of an outlying ridge in the northern Rubeho Mountains, west of the main ridge. This forest is situated in the Mpwapwa
. Bulletin of the British Ornithologists Club. Jon Fjeldsa & Jacob Kiure 53 Bull. 2003 123(1). Figure 1. Portraits comparing Xenoperdix specimens from the Udzungwa Mts (based on ZMUC ) and Mafwemiro Forest (ZMUC ). Xenoperdix udzungvoensis obscurata^ subsp. no v. Holotype The Zoological Museum University of Copenhagen (ZMUC) cat. no. Sex not determined. Collected 29 December 2000 in Mafwemiro Forest (6°50'S 36°34* E), which covers the top plateau of an outlying ridge in the northern Rubeho Mountains, west of the main ridge. This forest is situated in the Mpwapwa District, Dodoma Region. Diagnosis All birds are distinctly smaller than those of the nominate subspecies (Table 1) with relatively shorter tails ( of wing-length, against in the nominate subspecies). None of the individuals have the "necklace" of mostly white feathers with variable black spots seen in the nominate subspecies (Fig. 1). Instead there is an arc of black spots placed along the olive-grey borderline between throat and breast. The face is more obscured with dusky than in the nominate subspecies, but this may be somewhat variable among individuals. Under tail-coverts have only faint traces of the ochraceous wash on the white distal parts seen in the nominate subspecies. Secondaries have, overall, less distinctive barring, and the wing-coverts have distinctive grey to whitish distal margins, giving a scaly effect quite unlike the black-and-ochraceous barring in the nominate form. Rectrices are less broad (11-14 mm vs. 15-20 mm), and the bars of the central feat-hers are less distinctive Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists Club. Oxford : Clarendon Press
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