This subgenus has a pronotum with distinct humeral angles and ridges in both sexes, long maxillary palpi
, more or less punctate terga
and roughened propodeal area
simple scopal hairs
and propodeal corbicula with internal hairs, usually yellow male clypeus and parocular areas
and broad galea
.
For more information, see LaBerge, Wallace E. 1986. A revision of the bees of the genus Andrena of the Western Hemisphere. Part XI. Minor subgenera and subgeneric key. Transactions of the American Entomological Society 111: 441-567.
County Records: Alachua, Baker, Gadsden, Jackson, Leon, Liberty, Sarasota, Suwanee. LaBerge had it listed from only Leon and Liberty counties in Florida. The majority of the records from the FSCA are from the Northern tier of counties but the records from Alachua and Sarasota counties suggest that the species further south than thought.
Locations: Tall Timbers, Torreya State Park
Dates: March 13-May 6, March: 2, April: 7, May: 1
Plant:
Notes: LaBerge considers this species to be variable, and it consists of the two subspecies that Mitchell lists separately, A. cressoni cressoni and A. cressoni tallahasensis. This species is distinguished by the extremely short, usually entire, labral process in the female and an attenuated tip of the eight sternum of the male. Both sexes usually have distinctly punctate terga.
