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A biological inventory focused on plant-caterpillar-parasitoid associations at Yanayacu Biological Station, Ecuador, yielded 81 adult specimens of Tortricidae (Lepidoptera: Tortricoidea) representing 42 species in 13 genera. Based on this material, new host records are presented for species in the following genera: Lypothora Razowski, 1981; Inape Razowski, 1988; Orthocomotis Dognin, 1905; Paraptila Meyrick, 1912; Runtunia Razowski and Wojtusiak, 2008; Transtillaspis Razowski, 1987; Xoser Razowski and Pelz, 2003; Argyrotaenia Stephens, 1852; Anacrusis Zeller, 1877; Sisurcana Powell, 1986; Amorbia Clemens, 1860; Paramorbia Powell and Lambert, 1986; and Episimus Walsingham, 1892. Tortricids were reared from 46 plant species representing 24 plant families, with Piperaceae, Melastomataceae, and Asteraceae supporting the most tortricid herbivores (six species each).
Megatharsis buckleyi Waterhouse, 1891 is newly recorded from Brazil, extending its distributional range beyond Ecuador and Peru. A further new provincial record from Ecuador is presented in detail, and the species’ distribution and habitat is discussed. Color variation within the species, with a possible geographic correlation, is reported here for the first time.