Nemoria diamesa Ferguson, 1969. [7025]
Nemoria diamesa male, paratype. Collection of the American Museum of Natural History (AMNH). Specimen collected Custer Co., Colorado, 01-July-1967 at c 8,500 feet elevation.
Nemoria diamesa is part of a small group of four southwestern Nemoria species that are all distinguished by pale, weakly marked, sometimes almost white hindwings in contrast to the typical green forewing coloring. This characteristic hindwing coloration and similar genitalic structures are shared by Nemoria viridicaria, Nemoria subsequens, Nemoria diamesa and Nemoria albaria. Nemoria diamesa is distinguished by the distinctive parallel lines on the forewing, a significant amount of white striation on the green forewing ground color, and a somewhat more clearly marked hindwing with some green coloration and visible pm line markings that are more prominent than those of N albaria.
Nemoria diamesa has been reported from Colorado, New Mexico and Arizona. Ferguson (1985) reported collecting diamesa at 8,000 feet in the Great Sand Dunes National Monument (now Great Sand Dunes National Park) in Colorado between the dates of June 19-28. A living adult moth from the San Isabel National Forest photographed in July 2007 is figured here: http://www.insectimages.org/images/768x512/5347028.jpg
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