Field Guide Descriptions: Covell (1984); Beadle and Leckie (2012) | Online Resources: MPG, BugGuide, iNaturalist, Google, BAMONA, GBIF, BOLD | Technical Description, Adults: Forbes (1948) | Technical Description, Immature Stages: Wagner et al. (2001) | |
Adult Markings: This medium sized pale yellow geometrid with a large brown discal spot is unlikely to be mistaken for any other species. In addition to the typical form, three other named forms are known (see Forbes, 1948), none of which have been recorded in North Carolina. |
Adult Structural Features: Both male and female genitalia have unique characters and are very diagnostic. |
Structural photos |
Male reproductive structures |
Aedeagus |
Female reproductive structures |
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Adult ID Requirements: Identifiable from good quality photos of unworn specimens. |
Immatures and Development: Larvae vary from tan, gray, green, rose or lavender, but have a characteristic raised area above the spiracle on A2 (see photo and description in Wagner et al., 2001). |
Larvae ID Requirements: Identifiable from good quality photos, especially where associated with known host plants. |