This list is sorted by MONA number (MONA is short for Moths of America North of Mexico). The numbering system for North American moths was introduced by Ronald W. Hodges et al. in 1983 in the publication Check List of the Lepidoptera of America North of Mexico. Although the list has been updated, the placement of some species within families is outdated.
This list covers America north of Mexico (effectively the continental United States and Canada). For a list of moths and butterflies recorded from the state of Hawaii, see List of Lepidoptera of Hawaii.
This is a partial list, covering moths with MONA numbers ranging from 6089 to 7648. For the rest of the list, see List of moths of North America.
The geometer moths are moths belonging to the family Geometridae of the insect order Lepidoptera, the moths and butterflies. Their scientific name derives from the Ancient Greek geo γεω, and metron μέτρον "measure" in reference to the way their larvae, or inchworms, appear to measure the earth as they move along in a looping fashion. Geometridae is a very large family, containing around 23,000 described species; over 1400 species from six subfamilies are indigenous to North America alone. A well-known member is the peppered moth, Biston betularia, which has been the subject of numerous studies in population genetics. Several other geometer moths are notorious pests.
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