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Field Guide Descriptions: Covell (1984) | Online Photographs: MPG, BugGuide, GBIF, BOLD | Technical Description, Adults: Barnes and McDunnough (1911); Forbes (1923) | |
| Adult Markings: A rather nondescript moth with a triangular thoracic hump and furry legs that it holds out from the body at rest. The finely speckled forewings are light or medium brown to gray, typically with diffuse brown shading from about the mid-inner margin to the sub-apical costa, though this shading can be more extensive. In fresh condition G. anna typically shows faint brown barring in the subterminal area and even brown spotting along costa. Most distinctive are a white comma-shaped mark at the end of the discal cell, and, typically, obviously pale median and cubital veins. Length from tip of head to apex of forewing at rest averages 15 mm (n=3). Very similar in shape and size to G. francesca but differentiated from that species by the lack of black on the forewings. |
| Wingspan: 25-30 mm (Forbes, 1923) |
| Adult Structural Features: Male antennae are pectinate to the tip (Forbes, 1923) |
| Adult ID Requirements: Identifiable from good quality photos of unworn specimens. |
| Immatures and Development: Apparently undescribed |