Odynerus reniformis, [35]–59, [177]–178, [201]–205
Odynerus spinipes, [35]
Osmia (see also [three-horned Osmia]), [31]–32, [69], [150], [168]–169, [182], [186]
Owl (see also [Screech-owl]), [288]
P
Palarus, [102]
Parrot, [12]
Pelopæus, [31], [60]–135, [137], [155], [158]–160, [165], [222]–223, [225], [229], [233]
Philanthus, [103]