Subterranean nests, probably abandoned subterranean nests of other wasps or bees. Nest plugs and partitions are made of plant fibers mixed with mud. Cells arrayed in shallow linear series (Cane et al. 2007).
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
