Nest contents of Hoplitis curvipes from Dagestan A cocoon from cell No. 1 from outside B same, from inside C cocoon from cell No. 2 from inside D anterior part of cocoon in longitudinal section (a = cell wall b = outer cocoon layer c = cavity filled with concentric “films” woven from silk strands d = air portal opening e = silk strands below the air portal f = inner cocoon layer) E anterior top of cocoon from above showing amassed fecal pellets F dissected cell No. 1 with prepupa hibernating in cocoon G same, cell No. 2 H dissected cell No. 1 with cocoon after removal of prepupa.