Phyciodes cocyta

(Cramer, 1779)

northern crescent

Phyciodes cocyta, the northern crescent, is a in the Nymphalidae. It is distributed across the , particularly in northern North America. The has a wingspan of 32–38 mm and is active during summer months. feed on nectar from specific flowering plants, while larvae specialize on Asteraceae species.

NW122-10 Phyciodes cocyta cocyta (3429449679) by NSG group from Lund, Sweden. Used under a CC0 license.

NW52-7 Phyciodes cocyta (3429942346) by NSG group from Lund, Sweden. Used under a CC0 license.

Schmetterling 1 db by wikipedia. Used under a Public domain license.

Pronunciation

How to pronounce Phyciodes cocyta: //faɪˈsaɪəˌdiːz koʊˈsaɪtə//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from the similar pearl crescent (Phyciodes tharos) and tawny crescent (Phyciodes batesii) by geographic range and subtle pattern differences; northern crescent occupies more northerly distributions. Precise field identification from related crescents often requires examination of wing pattern details and locality.

Images

Appearance

Medium-small with wingspan 32–38 mm. Orange wings with black markings and white fringes along the wing edges. Pattern similar to other crescent butterflies in the Phyciodes.

Habitat

Open including fields, meadows, glades, and openings in woodlands. Occupies disturbed and semi-natural environments with adequate plant availability.

Distribution

; recorded from Canada (Alberta, Manitoba, Saskatchewan) and northern United States including Vermont.

Seasonality

fly from June to July, with timing varying by location. Single brooded in northern parts of range.

Diet

Larvae feed on Asteraceae . feed on nectar from dogbane (Apocynum), fleabane (Erigeron), and white clover (Trifolium repens).

Life Cycle

Complete with , larva, pupa, and stages. Larval stage feeds on Asteraceae plants. Specific stage not documented in sources.

Ecological Role

as ; herbivore as larva. Serves as prey for various .

Human Relevance

Subject of citizen science observation and monitoring programs. for health in northern .

Similar Taxa

Phyciodes tharosPearl crescent; similar orange and black pattern but generally more southerly distribution
Phyciodes batesiiTawny crescent; similar appearance with overlapping range, requires careful examination for separation

More Details

Taxonomic Status

Phyciodes cocyta is currently accepted as a valid , though some sources have treated it as synonymous with Phyciodes tharos. The GBIF match indicates it has been listed as a synonym of Phyciodes tharos, but Catalogue of Life and other sources maintain it as accepted. Taxonomic boundaries among Phyciodes crescents remain under study.

Conservation Context

Like many North American butterflies, Phyciodes have experienced declines linked to use (particularly neonicotinoids), climate change, and alteration. Long-term monitoring data from programs such as Art Shapiro's California transect (though focused on different Phyciodes species) demonstrate the value of standardized surveys for detecting such trends.