14) Leaf of Potentilla erecta. 15) Close-up view of leaf of Potentilla erecta with indumental hairs along the leaf margins and on the leaf surface. 16) Leaf pulp matrix of uppermost partition of the plug of nest 1 with numerous indumental hairs possibly originating from Potentilla and/or Fragaria.

  Part of: Müller A, Richter H (2018) Dual function of Potentilla (Rosaceae) in the life history of the rare boreoalpine osmiine bee Hoplitis (Formicapis) robusta (Hymenoptera, Megachilidae). Alpine Entomology 2: 139-147. https://doi.org/10.3897/alpento.2.30158