Triepeolus quadrifasciatus atlanticus

Mitchell, 1962

Triepeolus quadrifasciatus atlanticus is a of cleptoparasitic in the Apidae, described by Mitchell in 1962. As a member of the Triepeolus, it is a cuckoo bee that parasitizes nests of other bees, likely bees in the family Apidae. The subspecies is found in eastern North America, with records concentrated in the Atlantic coastal region. Like other Triepeolus , it has been observed visiting flowers for nectar, including Dalea candida (White Prairie Clover) and Grindelia camporum (Great Valley gumplant).

Pronunciation

How to pronounce Triepeolus quadrifasciatus atlanticus: /triˌɛp.iːˈoʊ.ləs ˌkwɒ.drɪ.fəˈsaɪ.ətəs ætˈlæn.tɪ.kəs/

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Identification

Distinguished from other Triepeolus by the combination of four pale bands on the (the source of the specific epithet 'quadrifasciatus') and geographic distribution in the Atlantic region of North America. The atlanticus differs from the nominate subspecies in subtle morphological features related to coloration and body proportions, though precise diagnostic characters require examination of . Identification to subspecies level typically requires reference to Mitchell's 1962 original description and comparison with specimens from the type locality.

Habitat

Associated with open where bees occur, including prairies, meadows, and coastal plain environments. Documented from sand dune habitats and shortgrass prairie .

Distribution

Eastern North America, specifically the Atlantic coastal region from the southeastern United States northward. GBIF records indicate presence in North America with confirmed observations. The epithet 'atlanticus' reflects this coastal distribution pattern.

Behavior

As a cleptoparasitic , females enter nests of bees to deposit in provisioned . The Triepeolus larva consumes the host's pollen and nectar stores and typically destroys the host larva. have been observed visiting flowers for nectar, including Dalea candida and Grindelia camporum, where they forage alongside other bees and .

Ecological Role

of other bees, functioning as a natural regulator of . visitation to flowers contributes to pollination, though less effectively than non-parasitic bees due to reduced pollen-collecting structures.

Human Relevance

Potential for healthy , as its presence indicates established of bees. No direct economic significance documented.

Similar Taxa

  • Triepeolus quadrifasciatus quadrifasciatusNominate with overlapping range; distinguished by subtle morphological differences in coloration and body proportions, with atlanticus restricted to Atlantic coastal region
  • Other Triepeolus speciesMany Triepeolus share similar black-and-white or black-and-yellow banded abdominal patterns; precise identification requires examination of male genitalia and detailed comparison of facial markings and wing venation
  • Epeolus speciesRelated cleptoparasitic bees in tribe Epeolini with similar appearance; distinguished by differences in scutellum shape, facial fovea structure, and details of abdominal banding pattern

Sources and further reading