Cosmia calami

Harvey, 1876

American Dun-bar Moth

Cosmia calami, commonly known as the American Dun-bar , is a noctuid moth native to North America. The species is notable for its larval stage, which preys on geometrid caterpillars rather than consuming plant material. have a wingspan of approximately 32 mm. The species has been documented across a broad geographic range spanning from the Pacific Northwest to the eastern United States.

Cosmia calami by (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda. Used under a CC-BY license.Cosmia calami by (c) brendanboyd, some rights reserved (CC BY). Used under a CC-BY license.Cosmia calami – American Dun-bar Moth (2) (14275702649) by Andy Reago & Chrissy McClarren. Used under a CC BY 2.0 license.

Pronunciation

How to pronounce Cosmia calami: //ˈkɒs.mi.ə kəˈlɑː.mi//

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Identification

The can be distinguished from similar Cosmia species by its North American distribution and association with oak-feeding geometrid prey. Accurate identification likely requires examination of genitalia or molecular analysis, as external appears similar to related noctuids.

Images

Appearance

have a wingspan of approximately 32 mm. Specific details of wing patterning, coloration, and body are not documented in available sources.

Habitat

Associated with oak (Quercus) woodlands and forests, given larval dependence on geometrid caterpillars that feed on Quercus . Specific microhabitat preferences for are not documented.

Distribution

Documented in North America from California, Oregon, and Washington in the west to Georgia, Massachusetts, New Hampshire, New Jersey, Pennsylvania, Tennessee, and Wisconsin in the east. Additional records from Minnesota, Manitoba, and Saskatchewan.

Diet

Larvae are and feed on geometrid caterpillars that feed on Quercus . diet is not documented.

Host Associations

  • Quercus - indirectLarvae prey on geometrid caterpillars that feed on oak

Ecological Role

Functions as a in oak woodland , potentially regulating of geometrid defoliators.

Similar Taxa

  • Cosmia confinisSimilar size and distribution; may overlap in range and require genital dissection for separation
  • Other Cosmia species-level morphological similarities necessitate careful examination for accurate determination

More Details

Taxonomic Note

The has been classified under the subgenus Calymnia as Cosmia (Calymnia) calami in some treatments.

Carnivorous Larvae

The predatory feeding habit of larvae is unusual within Noctuidae and represents a derived ecological strategy within the Cosmia.

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Sources and further reading