Pyrisitia proterpia
(Fabricius, 1775)
little yellow
Pronunciation
How to pronounce Pyrisitia proterpia: /pɪˈrɪsɪtiə proʊˈtɜːrpiə/
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Identification
Distinguished from similar sulphur (Phoebis, Abaeis, Zerene) by its smaller size and more uniformly coloration without the orange of Abaeis nicippe or the larger size and more angular of Phoebis sennae. The little yellow lacks the dogface pattern on characteristic of Zerene cesonia. Pyrisitia lisa is extremely similar and has been treated as or separate ; precise identification may require examination of or geographic context.
Images
Appearance
Small with bright to orange-yellow upper surfaces. Wings are relatively rounded with minimal angularity. Underside of wings is paler yellow with small dark spots. Sexes are similar in coloration, though females may show slightly more extensive dark markings on wing margins.
Habitat
Open, sunny including fields, meadows, roadsides, and disturbed areas. Documented in gardens with flora. Associated with areas supporting plants in the legume .
Distribution
North America (United States, Mexico), Central America, and South America. Documented occurrences include Colombia (Bucaramanga, El Playón, Los Santos, Piedecuesta, Manizales, Villavicencio, Municipio Pueblo Rico in Risaralda, and locations in Cuenca río Amoyá and Cuenca río Lagunilla).
Seasonality
Active during warmer months; specific period varies by latitude. Multiple per year in southern parts of range.
Diet
feed on nectar from flowers. feed on plants in the legume (Fabaceae), though specific records for this are not detailed in provided sources.
Host Associations
- Fabaceae - larval Specific not documented in provided sources
Life Cycle
with , , , and stages. Multiple per year in favorable climates. stage not specified in provided sources.
Behavior
are active fliers in sunny, open areas. is relatively low and fluttering. Males may for females in suitable .
Ecological Role
of flowers during nectar-feeding. function as on leguminous plants.
Human Relevance
Subject of observation and photography in gardens and natural areas. Documented at the Lady Bird Johnson Wildflower Center in Texas as part of diversity surveys.
Similar Taxa
- Pyrisitia lisaExtremely similar in appearance; historically treated as or closely related ; may require genital dissection for definitive identification
- Abaeis nicippeLarger with distinct orange on upper surfaces; 'sleepy orange' refers to this color pattern
- Phoebis sennaeMuch larger cloudless sulphur with more angular and often greenish- coloration
- Zerene cesoniaSouthern dogface with distinctive dark dogface pattern on and larger size
More Details
Taxonomic note
Pyrisitia proterpia has been treated under various generic including Eurema and Pyrisitia. The Pyrisitia is currently accepted, though some sources may use Eurema.


