sentences:  No other individuals were collected or seen and the bird was feared extinct, until a male was captured by Advaldo Dias do Prado during mist netting in 2006 in the state of Tocantins.It was known as the Caatinga woodpecker for some time, but this name is misleading and based on confusion between two places with similar names (see below).Normally, it has been considered a subspecies of the rufous-headed woodpecker ("Celeus spectabilis"), but an evaluation by the South American Classification Committee in 2003 resulted in it being recognized as a separate species.