A NEW SPECIES OF ANTPITTA (FORMICARIIDAE: GRALLARIA) FROM THE SOUTHERN ECUADORIAN ANDES

We describe a striking new species of Grallaria antpitta from wet, upper sub- tropical forest in the upper Rio Chinchipe drainage, provincia Zamora-Chinchipe, Ecuador. Notes on its natural history and molecular systematics are presented along with spectro- grams of its voice. The species is readily diagnosed by its large size, unique white facial markings, and voice. Initial results from DNA sequence analyses place the new species in a well-supported clade that includes Grallaria nuchalis (which is syntopic with the new spe- cies), G. hypoleuca, G. watkinsi, and G. ruficapilla. Received 23 September 1998, accepted 22 April 1999.