P. pudu sp. n. is described and figured from 2 $, I 9 from Chile Nuble Prov., Las Trancas, Dec. 1976, Luis E. Pena, in Florida State Collection of Arthropods, Gainesville; first $: Osorno Prov., Parc National Puyehue, Aguas Calienles, 7-8 Feb. 1978, Oliver S. Flint, Jr, in United States National Museum, Washington D.C.). Austropetalia is synonymized with Phyllopetalia, a key is presented to the 8 known spp. of the Neopetaliidae, and the known biology of the Chilean Phyllopetalia is summarized.