P. silvestrii may refer to: Paruroctonus silvestrii, the California common scorpion Paulownia silvestrii, a plant species in the genus Paulownia Pegoscapus silvestrii (Grandi), a fig wasp species in the genus Pegoscapus Philodromus silvestrii, Caporiacco, 1940, a crab spider species in the genus Philodromus and the family Philodromidae found in Somalia Pseudobiantes silvestrii, Mello-Leitão, 1944, a harvestman species in the genus Pseudobiantes and the family Epedanidae Pseudotyrannochthonius silvestrii, Ellingsen, 1905, a pseudoscorpion species in the genus Pseudotyrannochthonius and the family Chthoniidae found in Chile
See also Silvestrii (disambiguation)