Diploplectron brunneipes (Cresson) makes a shallow nest in compact clay-sand containing at least two cells. It is provisioned with immature Heteroptera. The larva resembles that of Astata in a general way but differs in several particulars.
Evans, Howard E.
"The nest and larva of Diploplectron brunneipes (Cresson) (Hymenoptera: Sphecidae),"
Great Basin Naturalist: Vol. 35
, Article 16.
Available at: http://scholarsarchive.byu.edu/gbn/vol35/iss1/16