on the Aratinga solstitialis complex Auk 122:292–305 The Upper Magdalena tapaculo, Scytalopus rodriguezi, (a member of the tapaculo family, Rhinocryptidae) is a restricted-range endemic presently known only from two localities on the eastern slope of the Cordillera Central at the head of the Magdalena valley, Colombia at 2000m or more above sea-level. Its range is believed to be no greater than 170 km2, and its population around 2,200 pairs. It is found in humid forest with dense understorey. The species' scientific name honours José Vicente Rodriguez Mahecha, a Colombian conservationist. The existence of this species was first suspected in 1986, when a tape-recording of the bird's song was made, but political instability in the region prevented a return visit until 2002–2003, when the species' existence was confirmed. Krabbe, N.; Salaman, P.; Cortés, A.; Quevedo, A.; Ortega, L.A. & Cadena, C.D. (2005) A new species of tapaculo from the upper Magdalena valley, Colombia Bulletin of the British Ornithologists' Club 125:93–108 Stiles's tapaculo, Scytalopus stilesi, is the second member of the tapaculo family, Rhinocryptidae, to be newly described in 2005. It has been found at 21 sites in montane forest between 1,420 and 2,130 m altitude in the northern Cordillera Central of the Colombian Andes; although having a restricted range, within this limited area it is a common understorey bird. The species was originally observed in the 1990s, but when Niels Krabbe examined recordings of their songs, his suspicions arose that they were a new species – Stiles's tapaculo's song is considerably faster and lower-pitched than that of the closely related Ecuadorian tapaculo S. robbinsi. The species is named in honour of F. Gary Stiles, an ornithologist heavily involved in research on Neotropical birds during the 1980s & 1990s. Cuervo, Andrés M.; Cadena, Carlos Daniel; Krabbe, Niels & Renjifo, Luis Miguel (2005): Scytalopus stilesi, a new species of tapaculo (Rhinocryptidae) from the Cordillera Central of Colombia. Auk 122(2): 445–463. [English with Spanish abstract] DOI:10.1642/0004-8038(2005)122[0445:SSANSO]2.0.CO;2 PDF fulltext The Iquitos gnatcatcher, Polioptila clementsi, is a gnatcatcher (Polioptilidae) only known from the Allpahuayo-Mishana National Reserve, west of Iquitos, Peru. The species is a member of the Polioptila guianensis complex. It is named after James F. Clements. Whitney, Bret M. & Alonso, José Alvarez (2005) A new species of Gnatcatcher from white-sand forests of northern Amazonian Peru, with revision of the Polioptila guianensis complex The Wilson Bulletin Vol. 117 No. 2 pp. 113–127 Naung Mung scimitar-babbler,