About Catocala micronympha Guenée, 1852
Catocala micronympha, commonly called the little nymph underwing or little bride underwing, is a moth species belonging to the family Erebidae. Achille Guenée first described this species in 1852. It is distributed across North America, with a range that extends from southern Ontario, Quebec, and Manitoba, through New Hampshire, Connecticut, and New Jersey, down to Florida. It ranges west to Texas, then north through Oklahoma, Kansas, and Iowa, to Wisconsin and Minnesota, and east to Michigan from this western point. This moth has a wingspan of 35 to 50 mm. Adult Catocala micronympha are active from April to September, with the flight period varying based on location. There is likely only one generation of this species produced per year. The larvae of Catocala micronympha feed on three species of oak: Quercus macrocarpa, Quercus stellata, and Quercus virginiana.