Thomasomys cinereus PERU Cajamarca, Cajamarca, Encañada (locality 40: 6.944976°S, 78.362122°W; MUSM 42453, 42454). Cajamarca, Cajamarca, Páramo de Cajamarca (not located; BNMH 0.3.15.4, 0.3.15.5). Cajamarca, Cajamarca, Quengorrio (locality 37: 6.8446100°S, 78.4318300°W; MUSM 38350). Cajamarca, Cajamarca, San Juan de Yerbabuena (locality 38: 6.9766300°S, 78.3799800°W; MUSM 38351, 38352). Cajamarca, Celendín, CCPP La Florida (locality 47: 7.041686°S, 78.137400°W; MUSM 38005). Cajamarca, Celendín, CCPP Lalucma (locality 46: 6.923999°S, 78.244523°W; MUSM 38006). Cajamarca, Celendín, CCPP Sorochuco (locality 45: 6.893929°S, 78.244760°W; MUSM 38007). Cajamarca, Celendín, Coñicorgue (locality 41: 6.8330600°S, 78.3149600°W; MUSM 38349, 38493–38495). Cajamarca, Celendín, El Punre (locality 44: 6.994457°S, 78.279074°W; MUSM 39369– 39373). Cajamarca, Celendín, Hacienda El Punre (locality 43: 7.007557°S, 78.288909°W; MUSM 38008). Cajamarca, Celendín, Laguna Milpo (locality 42: 6.975250°S, 78.307950°W; MUSM 34949). Cajamarca, Celendín, Porvenir (locality 39: 6.977116°S, 78.379967°W; MUSM 38496, 38497). Cajamarca, Contumaza, Bosque Cachil (locality 48: 7.395183°S, 78.780277°W; MUSM 51108–51113, 51115–51117, 52399– 52406). Cajamarca, Cutervo, Cutervo (locality 24: 6.378980°S, 78.817920°W; BMNH 81.9.7.29). Cajamarca, Cutervo, Parque Nacional Cutervo, 100 m over Tragadero (locality 25: 6.249972°S, 78.766528°W; MUSM 46716). Cajamarca, San Miguel, Seques (locality 26: 6.900000°S, 79.300000°W; AMNH 73127, 73129). Cajamarca, San Miguel, Taulis (locality 27: 6.833300°S, 79.166670°W; AMNH 73136, 73147). Cajamarca, Santa Cruz, 2 Km E Monteseco (locality 28: 6.857110°S, 79.098200°W; MUSM uncatalogued [VPT 1629, VPT 1640, VPT 1650). Cajamarca, Santa Cruz, 3.81 km NE from Monteseco (locality 29: 6.8437300°S, 79.0812540°W; MUSM 46756–46759; UMMZ 178461, 178463, 178467, 178482, 178488). Cajamarca, Santa Cruz, 35 mi NW Cajamarca (locality 30: 6.971760°S, 78.987800°W; MVZ 137937–137939). Cajamarca, Santa Cruz, Alcaparrosa, T 28 (locality 34: 6.786230°S, 78.890020°W; MUSM 25704). Cajamarca, Santa Cruz, Bancuyoc, T 07 (locality 32: 6.823410°S, 78.903620°W; MUSM 25705). Cajamarca, Santa Cruz, Bosque San Pedro (locality 33: 6.806293°S, 78.896919°W; MUSM 46909). Cajamarca, Santa Cruz, La Zanja y La Redonda (locality 35: - 6.821666°S, - 78.88166°W; MUSM 23346). Cajamarca, Santa Cruz, Pampa Verde (locality 31: 6.814830°S, 78.912050°W; MUSM 25706–25708). Cajamarca, Santa Cruz, Pisit T 25 (locality 36: 6.811390°S, 78.870520°W; MUSM 25709). La Libertad, Daniel A. Carrión, La Arena (locality 51: 7.88955°S, 78.13786°W; MUSM 24136–24142, 24166–24172). La Libertad, Daniel A. Carrión, South of Huamachuco (locality 50: 7.814830°S, 78.050030°W; BMNH 0.6.6.12). La Libertad, Gran Chimú, La Clambay (locality 49: 7.622123°S, 78.435071°W; MUSM 52972, 52973). La Libertad, Santiago de Chuco, Cachicadán (locality 55: 8.0646300°S, 78.1732100°W; MUSM 17285–17299, 17302). La Libertad, Santiago de Chuco, El Fundo Río Chuyuhual (locality 54: 7.933627°S, 78.220142°W; MUSM 41102, 41103, 42008–42012). La Libertad, Santiago de Chuco, Lagunas del Norte, río Chuyuhual (locality 53: 7.9304800°S, 78.2180200°W; MUSM 24928). La Libertad, Santiago de Chuco, Lagunas Norte, río Perejil, San Pedro (locality 52: 7.9262000°S, 78.2790800°W; MUSM 24774).

Published as part of Pacheco, Víctor & Ruelas, Dennisse, 2023, Systematic Revision Of Thomasomys Cinereus (Rodentia: Cricetidae: Sigmodontinae) From Northern Peru And Southern Ecuador, With Descriptions Of Three New Species, pp. 1-73 in Bulletin of the American Museum of Natural History 2023 (461) on pages 63-64, DOI: 10.1206/0003-0090.461.1.1, http://zenodo.org/record/10833272