Synonyms and other taxonomic changes
Andrena xanthura; Andrena convexiuscula; Andrena quadristrigata; Andrena winkleyi
Female: 10-12 mm. Male 9-11 mm.
Eastern USA and Europe. It keeps expanding its range (it has been collected in N.Mexico and Arizona). From Nova Scotia through Quebec and the New England states to Wisconsin, eastward through Ohio to Virginia and Maryland. Discover Life Map
most often collects pollen from clover and sweet clover (Fabaceae). The Hosts section on its Discover Life species page
lists known floral associations based on specimen records and images.
It nests singly (Chambers, 1949) or in large aggregations (Perkins, 1919). It over-winters as a larva or prepupa (Meidell, 1967). Males are often seen flying in large numbers about the foliage.
Introduced long ago from Europe, possibly from transportation of its ground nests in ships' ballast.
It flies into summer, when few native Andrena are flying.