Cosmia calami

(Harvey, 1876)
American Dun-bar

Sort #: 2792 | P #: 932672 | MPG #: 9815 | PFG Page #: 476
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Larval substrate: Quercus* (Oak), Quercus alba (White Oak), Quercus rubra (Northern Red Oak), Quercus macrocarpa (Burr Oak), Vaccinium pallidum (Hillsdie Blueberry)
Phenology: Adult: 6/25 to 8/13 (371 records)

Status in MA (automated assessment): Widespread, very common
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1910
Last Year Reported: 2025

Distribution by County: Berkshire, Hampden, Hampshire, Franklin, Worcester, Middlesex, Essex, Suffolk, Norfolk, Bristol, Plymouth, Barnstable, Dukes, Nantucket
Number of Records: 634