M. silvestrii may refer to: Megalomyrmex silvestrii, Wheeler, 1909, an ant species in the genus Megalomyrmex Mosfora silvestrii, Roewer, 1925, a harvestman species in the genus Mosfora and the family Epedanidae found in Funkiko Myrmica silvestrii, Wheeler, an ant species in the genus Myrmica
See also Silvestrii (disambiguation)