Formicivora grantsaui
| Sincorá antwren | |
|---|---|
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| Adult male | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Thamnophilidae |
| Genus: | Formicivora |
| Species: | F. grantsaui |
| Binomial name | |
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Formicivora grantsaui Gonzaga, Carvalhaes & Buzzetti, 2007 |
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The Sincorá antwren (Formicivora grantsaui) is a small passerine bird of the genus Formicivora in the family Thamnophilidae, the typical antbirds. It is endemic to a small area of eastern Brazil. The bird was not described as a new species until 2007 (coincidentally, another species was also described from the same region in 2007, the Diamantina tapaculo). The binomial name commemorates the German-born naturalist Rolf Grantsau who collected a specimen in 1965 that was recently identified as this species.
The Sincorá antwren was first described in 2007 from a specimen collected near the small town of Mucugê in the state of Bahia, eastern Brazil. It was given the binomial name Formicivora grantsaui. The specific epithet commemorates the German-born naturalist Rolf Grantsau who had collected a specimen in 1965.
The Sincorá antwren weighs 8.5–11.5 g (0.30–0.41 oz). The adult male has brown upperparts. The face, throat, breast and upper belly are black bordered with white. The lower belly and vent are grey and the flanks are brown. The upperwing-coverts are black with white spots while the underwing-coverts are grey and white. The tail feathers are grey below with white tips and a black subterminal band. The bill is black and the feet are grey with yellowish soles. Adult females are paler above than the males and have a white face and underparts with heavy black streaking. The rusty-backed antwren (F. rufa) is similar to the Sincorá antwren but has paler and more rufous upperparts, yellowish flanks and entirely white underwing-coverts.
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