Epeolus flavofasciatus
Smith, 1879
Yellow-banded Cellophane-cuckoo Bee
Epeolus flavofasciatus is a cleptoparasitic (cuckoo) in the Apidae, first described by Smith in 1879. Like other members of the Epeolus, this does not construct its own nests or collect pollen, instead laying in the nests of bees, primarily those in the genus Colletes (polyester bees). The species is characterized by its distinctive yellow-banded coloration and relatively small size. It occurs in North and Middle America, with records from the United States, Mexico, and Guatemala.
Pronunciation
How to pronounce Epeolus flavofasciatus: /ɛˈpiːələs ˌfleɪvoʊfæʃiˈeɪtəs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other Epeolus by the specific pattern and extent of yellow fasciae on the metasoma. The combination of black ground color with yellow banding separates it from uniformly dark or differently patterned . Lacks the dense, branched scopal hairs characteristic of non-parasitic bees, instead having short, simple hairs—this trait distinguishes Epeolus from most other Apidae at the level. Males can be distinguished from females by their elongated . Confusion possible with other Nomadinae cuckoo bees, but Epeolus species typically show more regular banding patterns than the often more mottled or irregularly marked Nomada species.
Images
Habitat
Distribution
Recorded from North America and Middle America. Specific localities include the United States, Mexico, and Guatemala. Distribution likely corresponds to that of Colletes in these regions.
Diet
feed on nectar from flowers. Larvae are fed pollen and nectar stores collected by bees, after the cuckoo larva eliminates the host or larva.
Host Associations
- Colletes - kleptoparasiteinvades nests and lays ; larva kills egg/larva and consumes stored provisions
Life Cycle
Females locate nests, enter, and lay in provisioned by Colletes host bees. Upon hatching, the cuckoo larva seeks out and destroys the host egg or larva, then consumes the stored pollen and nectar. Development proceeds within the host cell, with typically synchronized with or shortly after host emergence periods. Specific timing dependent on host .
Behavior
Males patrol areas near nesting sites and floral resources, potentially marking territories with . Females exhibit nest-searching , using chemical cues to locate host nests. are less frequently observed than their hosts due to lower densities typical of parasitic .
Ecological Role
Human Relevance
Contributes to biodiversity and serves as an for health, particularly regarding native . No direct economic importance; not a crop due to lack of pollen-collecting . May be of interest to bee researchers and conservation biologists monitoring native bee diversity.
Similar Taxa
- Epeolus attenboroughiSimilar size, coloration, and cleptoparasitic ; distinguished by specific pattern of pale markings and known only from Colorado and New Mexico
- Nomada speciesSimilar cleptoparasitic lifestyle and general appearance; distinguished by more irregular or mottled color patterns, different associations (primarily Andrena), and antennal structure
- Colletes species (hosts)May be confused due to similar size and occurrence at same sites; distinguished by dense branched scopal hairs on hind legs for pollen collection, and nest-building
More Details
Taxonomic Note
The specific epithet flavofasciatus refers to the yellow-banded (fasciate) coloration of the . The name Epeolus is thought to be derived from Epeius/Epeus of Greek mythology, the soldier credited with devising the Trojan Horse—an allusion to the deceptive, infiltrating nature of these cleptoparasitic bees.