Tarsomys

Abstract: .......................................................... 3 Introduction .......................................................... 3 Materials and Procedures ...................................................... 4 Acknowledgments .......................................................... 8 Definition of Tarsomys ......................................................... 9 Tarsomys apoensis .......................................................... 10 Tarsomys echinatus, new species ................. ............................. 33 Definition of Limnomys ........................................................ 40 Limnomys sibuanus .......................................................... 43 Tarsomys and Limnomys in Phylogenetic Context ......... ........................ 55 Division I (Old Endemics).................................................... 56 1. Phloeomys Group ....................................................... 57 2. Crateromys Group ....................................................... 59 3. Apomys Group .......................................................... 65 4. Crunomys Group ........................................................ 69 5. Chrotomys Group ....................................................... 71 6. Rhynchomys Group ......... ............................................... 73 Clustering Among Genera in Division I .......... ............................ 81 Division II (Anonymomys).................................................... 89 Division III (New Endemics) ................................................. 93 1. Tryphomys and Abditomys ............................................... 101 2. Bullimus ........................................................ .. 113 3. Tarsomys ....................................................... ... 120 4. Limnomys .......................................................... 121 5. Rattus .......................................................... 121 Phylogenetic Alliances Among the Genera in Division III ...... ................ 123 Distributions .......................................................... 127 Altitudinal Patterns .......................................................... 127 Insular Patterns .......................................................... 133 Conclusions .......................................................... 134 References .......................................................... 135