Published: Volume 30(1), June 1983. Pages 109-113.
Language: Spanish
Original Title: Una variación del patrón general del sternum de los Passeriformes
Summary:
We have examined 830 sterna of Spanish Passeriforms (Apendix 1) belonging to 111 species. In the whole studied sample, only Fringilla teydea, Fringilla coelebs and Cisticola juncidis show a spina interna in the sternum. This structure is a medium-rostrale extension of the labrum dorsale, which goes forward to fuse with the manubrium sterni. We could not examine varied skeletal material of exotic Passeriforms, but we can say that no less than three more species of the genus Cisticola have a spina interna, namely C. robusta, C. galactotes and C. exilis. However, a specimen of C. lateralis does not have it.
