. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Taxonomy of Green Barbets 13. Fig. 1: Heads of four Afrotropical barbets discussed in the present contribution to show mark- ed variation in head pattern. Upper left: Stactolaema whytii sowerbyi Sharpe Upper right: Stactolaema anchietae anchietae (Bocage) Lower left: Stactolaema leucotis leucotis (Sundevall) Lower right: Cryptolybia woodwardi woodwardi (Shelley) Note lighter body colouration of C. woodwardi and smooth arc of the culmen, which is basal- ly slightly e
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Taxonomy of Green Barbets 13. Fig. 1: Heads of four Afrotropical barbets discussed in the present contribution to show mark- ed variation in head pattern. Upper left: Stactolaema whytii sowerbyi Sharpe Upper right: Stactolaema anchietae anchietae (Bocage) Lower left: Stactolaema leucotis leucotis (Sundevall) Lower right: Cryptolybia woodwardi woodwardi (Shelley) Note lighter body colouration of C. woodwardi and smooth arc of the culmen, which is basal- ly slightly elevated in Stactolaema spp. sounds. During a visit to the Ngoye Forest, Zululand, on 3 May, 1986, I was able to confirm similar territorial response to taped recordings of the normal call from a pair of this remote austral isolate attracted to the canopy above my head. As far as determined, comparable behaviour has not been noted in other African barbets, which additional territorial behavioural response may be viewed as a supplementary indicator of valid generic status. Examination of the remiges of C. olivácea and C. woodwardi, as well as of Stac- tolaema anchietae, S. whytii and S. leucotis, reveals no remigial peculiarity which could be construed as functional in the creation of a non-vocal territorial response to taped calls. C. olivácea and C. woodwardi have the short first primary much broader and usually longer than in Stactolaema spp. (25—27, versus 18—23 mm), but about the same or somewhat less than in the cases of Gymnobucco bonapartei, G. calvus, G. peli and G. sladeni. These latter barbets differ conspicuously in having the nasal bristles denser and longer, vertical in arrangement and rusty buff, tipped with blackish brown in colour. In the wing-formulae of Cryptolybia spp., p 5 is the longest Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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