Fig. 2

Angiosperm pollen load of the wasp, P. anthophilos, and pollen grain features (Tricolporoidites sp.). a Map of the preserved pollen grains in contact with (encircled) and surrounding the wasp, and microphotograph of the wasp at the same scale. Scale line 1.0 mm. The grains labeled c–h refer to those shown at high magnification in Fig. 2c−h. b Detail of the concentrated pollen mass on and around the mouthparts (drawing and microphotograph from a; at the same scale). Scale line 0.2 mm. c–e Subprolate pollen grains in equatorial view (note the colpi with poroids). f Prolate and colporoidate pollen grain in equatorial view. g, h Subprolate pollen grain in polar view showing its three colpi (same grain with different focus). Microphotographs c–h taken using a ×100 objective and at the same scale. Scale lines in c–h: 10 μm. i, j High-resolution CT scans of the wasp head (frontal view), showing just the external surface (i) and with the external surface faded to reveal the food mass in the buccal cavity (in green) (j)